Missouri River near Ulm
6.4 mi- Level
- 3.1 ft
- Flow
- 3,620 cfs
Reading from Sat 2:30 AM · NWS gauge page
1 active weather alert
Special Weather Statement
Ends in 1 h 7 min
- When
- Until 5:30 AM
- Where
- East Glacier Park Region; Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Hill County; Northern Blaine County; Southern Rocky Mountain Front; Southern High Plains; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Little Belt and Highwood Mountains; Snowy and Judith Mountains; Helena Valley; Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains
Issued for this forecast zone · National Weather Service Great Falls MT
Full alert textHide details
With the rain and snowfall yesterday, patchy dense fog is developing over portions of North Central and Southwest MT.
Visibility is below a half mile in some areas.
Those traveling early this morning should be alert for quickly changing visibility conditions.
Reminder, reduce your driving speeds in areas of poor visibility.
Areas: East Glacier Park Region; Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Hill County; Northern Blaine County; Southern Rocky Mountain Front; Southern High Plains; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Little Belt and Highwood Mountains; Snowy and Judith Mountains; Helena Valley; Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains
See it on weather.gov (opens in a new tab)
Observed 3:55 AM MDT at KGTF
Ulm, MT weather
Clear and 27°−3°, 11°6° colder than a typical Oct 24, drip faucets tonight, low 20°−7°.
Today: low 20°−7° (likely 20°−7° to 31°−1°), high 42°6° (likely 42°6° to 49°9°).
Now 27°−3°
Clear · Feels like 15°−10°
- Feels like
- 15°−10°
- Wind chill from 15 mph24 km/h wind · air 27°−3°
- Wind
- 15 mph24 km/h
- From the south-southwest. Easing to 5 mph8 km/h by 5 AM
- Dew point
- 21°−6°
- Dry · up to 31°−1° by 1 PM
- UV index
- 0Low
- Moderate 12–5 PM · peak 4
- Air quality
- 41Good
- Main pollutant: PM2.5 (fine particles)
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
21°12° cooler than this time yesterday (47°8° then, 26°−3° now)
Good hours for
TonightNear 21°−6° · freezing, low 20°−7° · Clear
This morningUp to 32°0° by 11 AM · freezing, low 20°−7° · Clear
This afternoonUp to 42°6° by 4 PM · Clear
TonightDown to 23°−5° by 5 AM · freezing, low 23°−5° · Partly cloudy
Tomorrow morningUp to 31°−1° by 11 AM · freezing, low 21°−6° · Mostly cloudy
Tomorrow afternoonUp to 37°3° by 5 PM · freezing, low 32°0° · Mostly cloudy
Tomorrow nightDown to 23°−5° by 3 AM · freezing, low 23°−5° · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 4a | Clear | 21°−6° (likely 21°−6° to 31°−1°) | 16°−9° | 0% | 3 mph5 km/h from S, gusts 6 mph9 km/h | 94% | 0% | 0 |
| Sat 5a | Clear | 20°−7° (likely 20°−7° to 31°−1°) | 14°−10° | 0% | 5 mph8 km/h from S, gusts 6 mph10 km/h | 96% | 3% | 0 |
| Sat 6a | Clear | 20°−7° (likely 20°−7° to 31°−1°) | 14°−10° | 0% | 5 mph8 km/h from S, gusts 7 mph11 km/h | 92% | 1% | 0 |
| Sat 7a | Clear | 20°−7° (likely 20°−7° to 31°−1°) | 14°−10° | 0% | 5 mph8 km/h from SSE, gusts 8 mph13 km/h | 97% | 7% | 0 |
| Sat 8a | Sunny | 20°−7° (likely 20°−7° to 31°−1°) | 14°−10° | 0% | 5 mph8 km/h from SSE, gusts 8 mph13 km/h | 99% | 8% | 0 |
| Sat 9a | Sunny | 22°−6° (likely 22°−6° to 32°0°) | 16°−9° | 0% | 5 mph8 km/h from SSE, gusts 7 mph12 km/h | 90% | 4% | 0 |
| Sat 10a | Sunny | 28°−2° (likely 28°−2° to 36°2°) | 23°−5° | 0% | 5 mph8 km/h from SSE, gusts 9 mph14 km/h | 84% | 7% | 1 |
| Sat 11a | Sunny | 32°0° (likely 32°0° to 39°4°) | 28°−2° | 0% | 5 mph8 km/h from S, gusts 10 mph16 km/h | 80% | 10% | 2 |
| Sat 12p | Sunny | 36°2° (likely 36°2° to 43°6°) | 33°1° | 0% | 3 mph5 km/h from SSE, gusts 12 mph20 km/h | 77% | 11% | 3 |
| Sat 1p | Sunny | 38°3° (likely 38°3° to 46°8°) | 36°2° | 0% | 3 mph5 km/h from SSE, gusts 14 mph22 km/h | 75% | 8% | 4 |
| Sat 2p | Sunny | 41°5° (likely 41°5° to 47°8°) | 39°4° | 0% | 3 mph5 km/h from SSE, gusts 12 mph20 km/h | 72% | 44% | 4 |
| Sat 3p | Partly sunny | 41°5° (likely 41°5° to 49°9°) | 39°4° | 0% | 3 mph5 km/h from SE, gusts 11 mph18 km/h | 69% | 42% | 4 |
| Sat 4p | Sunny | 42°6° (likely 42°6° to 49°9°) | 39°4° | 0% | 5 mph8 km/h from ESE, gusts 11 mph18 km/h | 67% | 8% | 3 |
| Sat 5p | Sunny | 40°4° (likely 40°4° to 49°9°) | 37°3° | 0% | 5 mph8 km/h from E, gusts 7 mph12 km/h | 68% | 4% | 1 |
| Sat 6p | Clear | 38°3° (likely 38°3° to 46°8°) | 34°1° | 0% | 5 mph8 km/h from E, gusts 7 mph11 km/h | 75% | 34% | 0 |
| Sat 7p | Partly cloudy | 36°2° (likely 36°2° to 42°6°) | 33°1° | 0% | 3 mph5 km/h from E, gusts 9 mph15 km/h | 83% | 46% | 0 |
| Sat 8p | Partly cloudy | 31°−1° (likely 31°−1° to 40°4°) | 31°−1° | 0% | 2 mph3 km/h from E, gusts 9 mph15 km/h | 87% | 66% | 0 |
| Sat 9p | Partly cloudy | 29°−2° (likely 29°−2° to 39°4°) | 29°−2° | 0% | 1 mph2 km/h from E, gusts 9 mph14 km/h | 89% | 77% | 0 |
| Sat 10p | Cloudy | 28°−2° (likely 28°−2° to 38°3°) | 28°−2° | 0% | 1 mph2 km/h from ESE, gusts 6 mph10 km/h | 93% | 73% | 0 |
| Sat 11p | Partly cloudy | 27°−3° (likely 27°−3° to 37°3°) | 27°−3° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 93% | 53% | 0 |
| Sun 12a | Partly cloudy | 26°−3° (likely 26°−3° to 36°2°) | 26°−3° | 0% | 1 mph2 km/h from E, gusts 6 mph9 km/h | 93% | 50% | 0 |
| Sun 1a | Partly cloudy | 25°−4° (likely 25°−4° to 35°2°) | 25°−4° | 0% | 1 mph2 km/h from ENE, gusts 5 mph8 km/h | 95% | 40% | 0 |
| Sun 2a | Clear | 25°−4° (likely 25°−4° to 34°1°) | 25°−4° | 0% | 1 mph2 km/h from ENE, gusts 6 mph10 km/h | 94% | 34% | 0 |
| Sun 3a | Clear | 25°−4° (likely 25°−4° to 33°1°) | 25°−4° | 0% | 1 mph2 km/h from NE, gusts 8 mph13 km/h | 96% | 23% | 0 |
| Sun 4a | Clear | 24°−4° (likely 24°−4° to 32°0°) | 24°−4° | 0% | 1 mph2 km/h from NNE, gusts 9 mph14 km/h | 96% | 31% | 0 |
| Sun 5a | Clear | 23°−5° (likely 23°−5° to 32°0°) | 23°−5° | 0% | 1 mph2 km/h from N, gusts 8 mph13 km/h | 96% | 25% | 0 |
| Sun 6a | Mostly cloudy | 23°−5° (likely 23°−5° to 32°0°) | 23°−5° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 96% | 30% | 0 |
| Sun 7a | Cloudy | 22°−6° (likely 22°−6° to 32°0°) | 22°−6° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 98% | 61% | 0 |
| Sun 8a | Cloudy | 21°−6° (likely 21°−6° to 33°1°) | 21°−6° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 100% | 63% | 0 |
| Sun 9a | Cloudy | 23°−5° (likely 23°−5° to 33°1°) | 23°−5° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 96% | 68% | 0 |
| Sun 10a | Cloudy | 28°−2° (likely 28°−2° to 33°1°) | 28°−2° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 89% | 78% | 1 |
| Sun 11a | Cloudy | 31°−1° (likely 31°−1° to 34°1°) | 31°−1° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 81% | 77% | 2 |
| Sun 12p | Cloudy | 32°0° (likely 32°0° to 35°2°) | 32°0° | 0% | 1 mph2 km/h from N, gusts 5 mph9 km/h | 74% | 79% | 3 |
| Sun 1p | Cloudy | 34°1° (likely 34°1° to 36°2°) | 34°1° | 0% | 1 mph2 km/h from N, gusts 5 mph8 km/h | 70% | 80% | 4 |
| Sun 2p | Cloudy | 35°2° (likely 35°2° to 37°3°) | 35°2° | 0% | 1 mph2 km/h from N, gusts 5 mph8 km/h | 70% | 81% | 3 |
| Sun 3p | Cloudy | 36°2° (likely 36°2° to 38°3°) | 36°2° | 0% | 1 mph2 km/h from NE, gusts 5 mph8 km/h | 67% | 80% | 3 |
| Sun 4p | Cloudy | 36°2° (likely 36°2° to 39°4°) | 36°2° | 0% | 1 mph2 km/h from NE, gusts 5 mph8 km/h | 65% | 78% | 2 |
| Sun 5p | Cloudy | 37°3° (likely 36°2° to 39°4°) | 37°3° | 0% | 1 mph2 km/h from NE, gusts 6 mph9 km/h | 64% | 76% | 1 |
| Sun 6p | Cloudy | 34°1° (likely 34°1° to 38°3°) | 34°1° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 72% | 79% | 0 |
| Sun 7p | Cloudy | 31°−1° (likely 31°−1° to 38°3°) | 31°−1° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 81% | 82% | 0 |
| Sun 8p | Cloudy | 29°−2° (likely 29°−2° to 37°3°) | 29°−2° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 88% | 81% | 0 |
| Sun 9p | Partly cloudy | 26°−3° (likely 26°−3° to 35°2°) | 26°−3° | 0% | 1 mph2 km/h from WNW, gusts 4 mph7 km/h | 92% | 76% | 0 |
| Sun 10p | Cloudy | 25°−4° (likely 25°−4° to 35°2°) | 25°−4° | 0% | 1 mph2 km/h from WNW, gusts 4 mph7 km/h | 94% | 90% | 0 |
| Sun 11p | Cloudy | 24°−4° (likely 24°−4° to 35°2°) | 24°−4° | 0% | 1 mph2 km/h from WNW, gusts 4 mph7 km/h | 94% | 89% | 0 |
| Mon 12a | Cloudy | 24°−4° (likely 24°−4° to 35°2°) | 24°−4° | 0% | 1 mph2 km/h from SW, gusts 4 mph7 km/h | 93% | 85% | 0 |
| Mon 1a | Cloudy | 24°−4° (likely 20°−7° to 32°0°) | 24°−4° | 0% | 1 mph2 km/h from SW, gusts 3 mph4 km/h | 94% | 75% | 0 |
| Mon 2a | Mostly cloudy | 24°−4° (likely 19°−7° to 32°0°) | 24°−4° | 0% | 1 mph2 km/h from SW, gusts 3 mph4 km/h | 95% | 77% | 0 |
| Mon 3a | Mostly cloudy | 23°−5° (likely 19°−7° to 31°−1°) | 23°−5° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 96% | 65% | 0 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Fog. High 42°6°, low 20°−7°. Typical 53°12° / 30°−1°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 20°−7°Dry
Afternoon
noon–6 PM
Partly sunny, 42°6°Dry
Evening
6 PM–midnight
Partly cloudy, 31°−1°Dry
Overnight
midnight–6 AM
Clear, 23°−5°Dry
Official NWS forecast
Today: Patchy fog before 10am. Sunny, with a high near 42. South southeast wind around 5 mph.
Tonight: Patchy fog. Mostly clear, with a low around 20. South wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 42°6°–49°9°
- Low, likely
- 20°−7°–31°−1°
- Typical high / low
- 53°12° / 30°−1°
- Wind
- 9 mph14 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 37°3°, low 20°−7°. Typical 52°11° / 29°−2°. Dry. Forecasts agree.
Morning
6 AM–noon
Cloudy, 21°−6°Dry
Afternoon
noon–6 PM
Cloudy, 37°3°Dry
Evening
6 PM–midnight
Partly cloudy, 29°−2°Dry
Overnight
midnight–6 AM
Mostly cloudy, 23°−5°Dry
Official NWS forecast
Day: Mostly cloudy, with a high near 37. North wind around 1 mph.
Night: Mostly cloudy, with a low around 20. Northwest wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 37°3°–39°4°
- Low, likely
- 20°−7°–32°0°
- Typical high / low
- 52°11° / 29°−2°
- Wind
- 6 mph10 km/h, gusts 13 mph22 km/h
- UV peak
- 4
Monday, Oct 26. Mostly cloudy. High 41°5°, low 26°−3°. Typical 52°11° / 29°−2°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 24°−4°Dry
Afternoon
noon–6 PM
Cloudy, 42°6°Dry
Evening
6 PM–midnight
Cloudy, 34°1°Dry
Overnight
midnight–6 AM
Cloudy, 31°−1°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 41. Northeast wind 0 to 3 mph.
Night: Mostly cloudy, with a low around 26. South wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 41°5°–44°7°
- Low, likely
- 19°−7°–29°−2°
- Typical high / low
- 52°11° / 29°−2°
- Wind
- 5 mph8 km/h, gusts 10 mph16 km/h
- UV peak
- 3
Tuesday, Oct 27. Rain. High 47°8°, low 27°−3°. Typical 52°11° / 29°−2°. Rain 0.11 in2.8 mm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 35°2°Dry
Afternoon
noon–6 PM
Cloudy, 50°10°Dry
Evening
6 PM–midnight
Cloudy, 43°6°Dry
Overnight
midnight–6 AM
Partly cloudy, 38°4°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after noon. Partly sunny, with a high near 47. Southwest wind 1 to 8 mph, with gusts as high as 20 mph.
Night: A chance of rain before 3am, then a chance of snow. Mostly cloudy, with a low around 27. New snow accumulation of less than half an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 47°8°–52°11°
- Low, likely
- 26°−3°–34°1°
- Typical high / low
- 52°11° / 29°−2°
- Wind
- 17 mph28 km/h, gusts 30 mph49 km/h
- UV peak
- 2
Wednesday, Oct 28. Snow. High 43°6°, low 23°−5°. Typical 51°11° / 28°−2°. Snow 0.01 in0.3 mm, 20% chance. Forecasts agree.
Morning
6 AM–noon
Sunny, 37°3°Dry
Afternoon
noon–6 PM
Partly sunny, 53°11°Dry
Evening
6 PM–midnight
Clear, 42°6°Dry
Overnight
midnight–6 AM
Clear, 31°−1°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow. Partly sunny, with a high near 43.
Night: A chance of snow. Mostly cloudy, with a low around 23.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 43°6°–54°12°
- Low, likely
- 23°−5°–38°3°
- Typical high / low
- 51°11° / 28°−2°
- Wind
- 16 mph26 km/h, gusts 26 mph41 km/h
- UV peak
- 3
Thursday, Oct 29. Snow. High 40°4°, low 23°−5°. Typical 51°11° / 28°−2°. Snow < 1 in< 2 cm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 31°−1°Dry
Afternoon
noon–6 PM
Cloudy, 38°3°Dry
Evening
6 PM–midnight
Cloudy, 35°2°Dry
Overnight
midnight–6 AM
Snow, 31°−1°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before noon. Mostly cloudy, with a high near 40.
Night: A slight chance of snow. Mostly cloudy, with a low around 23.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 34°1°–44°7°
- Low, likely
- 23°−5°–32°0°
- Typical high / low
- 51°11° / 28°−2°
- Wind
- 10 mph16 km/h, gusts 20 mph32 km/h
- UV peak
- 3
Friday, Oct 30. Snow. High 43°6°, low 30°−1°. Typical 50°10° / 28°−2°. Snow 0–3 in0–8 cm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 31°0°Dry
Afternoon
noon–6 PM
Partly sunny, 38°3°Dry
Evening
6 PM–midnight
Cloudy, 34°1°Dry
Overnight
midnight–6 AM
Cloudy, 29°−1°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow before noon. Partly sunny, with a high near 43.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 33°1°–47°8°
- Low, likely
- 25°−4°–33°1°
- Typical high / low
- 50°10° / 28°−2°
- Wind
- 9 mph14 km/h, gusts 16 mph25 km/h
- UV peak
- 3
Saturday, Oct 31. Cloudy. High 41°5°, low 27°−3°. Typical 50°10° / 28°−2°. Dry. Forecasts differ.
Morning
6 AM–noon
Cloudy, 29°−1°Dry
Afternoon
noon–6 PM
Cloudy, 40°5°Dry
Evening
6 PM–midnight
Cloudy, 35°2°Dry
Overnight
midnight–6 AM
Drizzle, 28°−2°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 33°1°–53°12°
- Low, likely
- 19°−7°–35°2°
- Typical high / low
- 50°10° / 28°−2°
- Wind
- 10 mph17 km/h, gusts 24 mph38 km/h
- UV peak
- 2
Sunday, Nov 1. Drizzle. High 44°7°, low 28°−2°. Typical 49°9° / 27°−3°. Rain 0.02 in0.5 mm, 10% chance. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 30°−1°Dry
Afternoon
noon–6 PM
Sunny, 42°6°Dry
Evening
6 PM–midnight
Clear, 37°3°Dry
Overnight
midnight–6 AM
Clear, 32°0°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 36°2°–47°8°
- Low, likely
- 17°−8°–33°1°
- Typical high / low
- 49°9° / 27°−3°
- Wind
- 16 mph25 km/h, gusts 27 mph44 km/h
- UV peak
- 3
Monday, Nov 2. Sunny. High 45°7°, low 30°−1°. Typical 49°9° / 27°−3°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 34°1°Dry
Afternoon
noon–6 PM
Sunny, 48°9°Dry
Evening
6 PM–midnight
Clear, 36°2°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 35°2°–51°11°
- Low, likely
- 24°−4°–35°2°
- Typical high / low
- 49°9° / 27°−3°
- Wind
- 10 mph17 km/h
- UV peak
- 3
The outlook
Today
Dry, high 42°, low 20°.
Tomorrow
Dry, high 37°, low 20°, cooling off.
Monday
Dry, high 41°, low 26°, warming up.
Rest of week
Mostly dry, highs 40–47°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (TFX) (opens in a new tab)
What changed since yesterday
No meaningful changes from yesterday’s forecast.
Radar
Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view
Rivers
NOAA river gauges within 25 mi
Below flood stage
Sun River near Vaughn
7.2 mi- Level
- 2.5 ft
- Flow
- 578 cfs
Reading from Sat 3 AM · NWS gauge page
Muddy Creek at Vaughn
9.7 mi- Level
- 3.5 ft
- Flow
- 94 cfs
Reading from Sat 2:30 AM · NWS gauge page
Missouri River at Cascade
13 mi- Level
- 6.9 ft
- Flow
- 3,600 cfs
Reading from Sat 2:30 AM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Drip faucets tonight
Tonight’s low: 20°−7°
Overnight low of 20°F for 4+ hours — cold enough that pipes in unheated spaces can freeze. Let faucets on exterior walls drip overnight.
Heating this week
About 59% less heating than a typical week.
This week 71Typical 174
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 47
- h below 17°F
- 0
- h below 5°F
- 0
47, 17 and 5°F are the test points heat pumps are rated at. About 10 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 21°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.
Open the windows?
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Is this typical?
Great Falls Airport · official normals 1991–2020 · records 1891–2026
Oct 24, today vs a typical year
Today’s expected high is 11°6° colder than typical.
- Normal high / low
- 53°12° / 30°−1°
- Forecast high / low
- 42°6° / 20°−7°
- Record high
- 78°26° in 1903
- Record low
- 1°−17° in 1919
Last 7 days vs normal
On average 7°4° warmer than normal (daily mean temperature).
- +4°+2°SunOct 18
- +10°+6°MonOct 19
- +3°+1°TueOct 20
- +11°+6°WedOct 21
- +14°+8°ThuOct 22
- ±0°FriOct 23
- —SatOct 24
Ulm weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:58 AM, sunset 6:21 PM.
- Daylight
- 10 h 24 min
- Losing 3 min 12 s a day; shortest Dec 21, 1 h 57 min less
- Golden hour
- 5:38–6:41 PM
- Morning 7:38–8:41 AM
- Blue hour
- 6:41–6:53 PM
- Morning 7:26–7:38 AM; first light 7:26 AM
Stars tonight? Good
Clear 4:23–7:26 AM; moon 96% lit, sets 6:11 AM.
Moon
Waxing gibbous
96% lit · growing
- Today
- sets 6:11 AM · rises 5:22 PM
- Full moon
- Oct 25
- New moon
- Nov 9
