Tenmile Creek (MT) near Helena
3.3 mi- Level
- 3.0 ft
- Flow
- 87 cfs
Reading from Fri 11:15 PM · NWS gauge page
Observed 1:10 AM MDT at KHLN
Helena, MT weather
Clear and 30°−1°, 11°6° colder than a typical Oct 24, freeze watch tonight, low 21°−6°.
Today: low 21°−6° (likely 20°−7° to 31°−1°), high 42°6° (likely 42°6° to 47°8°).
Now 30°−1°
Clear · Feels like 23°−5°
- Feels like
- 23°−5°
- Wind chill from 7 mph11 km/h wind · air 30°−1°
- Wind
- 7 mph11 km/h
- From the west-southwest. Up to 7 mph11 km/h through 1 PM
- Dew point
- 27°−3°
- Dry, static shocks likely
- UV index
- 0Low
- Moderate 12–5 PM · peak 4
- Air quality
- 38Good
- Main pollutant: PM2.5 (fine particles)
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
19°11° cooler than this time yesterday (50°10° then, 31°−1° now)
Good hours for
TonightNear 24°−4° · freezing, low 22°−6° · Clear
This morningUp to 30°−1° by 11 AM · freezing, low 21°−6° · Clear
This afternoonUp to 41°5° by 5 PM · freezing, low 32°0° · Clear
TonightDown to 24°−4° by 5 AM · freezing, low 24°−4° · Partly cloudy
Tomorrow morningUp to 29°−2° by 11 AM · freezing, low 21°−6° · Partly cloudy
Tomorrow afternoonUp to 37°3° by 3 PM · freezing, low 30°−1° · Mostly cloudy
Tomorrow nightDown to 27°−3° by 11 PM · freezing, low 27°−3° · Partly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 1a | Clear | 25°−4° (likely 25°−4° to 33°1°) | 25°−4° | 0% | 1 mph2 km/h from SW, gusts 6 mph9 km/h | 94% | 8% | 0 |
| Sat 2a | Clear | 25°−4° (likely 24°−4° to 32°0°) | 25°−4° | 0% | 1 mph2 km/h from WSW, gusts 6 mph9 km/h | 92% | 4% | 0 |
| Sat 3a | Clear | 24°−4° (likely 23°−5° to 32°0°) | 24°−4° | 0% | 1 mph2 km/h from SW, gusts 4 mph7 km/h | 93% | 4% | 0 |
| Sat 4a | Clear | 23°−5° (likely 22°−6° to 32°0°) | 23°−5° | 0% | 1 mph2 km/h from SW, gusts 3 mph4 km/h | 94% | 2% | 0 |
| Sat 5a | Clear | 22°−6° (likely 20°−7° to 31°−1°) | 22°−6° | 0% | 1 mph2 km/h from S, gusts 3 mph5 km/h | 96% | 2% | 0 |
| Sat 6a | Clear | 21°−6° (likely 20°−7° to 31°−1°) | 21°−6° | 0% | 1 mph2 km/h from SSE, gusts 2 mph3 km/h | 93% | 4% | 0 |
| Sat 7a | Clear | 21°−6° (likely 21°−6° to 31°−1°) | 21°−6° | 0% | 2 mph3 km/h from E, gusts 4 mph6 km/h | 98% | 9% | 0 |
| Sat 8a | Sunny | 21°−6° (likely 21°−6° to 31°−1°) | 21°−6° | 0% | 2 mph3 km/h from SSW, gusts 4 mph6 km/h | 99% | 22% | 0 |
| Sat 9a | Sunny | 23°−5° (likely 23°−5° to 32°0°) | 18°−8° | 0% | 3 mph5 km/h from WSW, gusts 2 mph3 km/h | 97% | 14% | 0 |
| Sat 10a | Sunny | 26°−3° (likely 26°−3° to 34°1°) | 26°−3° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 100% | 6% | 1 |
| Sat 11a | Sunny | 30°−1° (likely 30°−1° to 37°3°) | 30°−1° | 0% | 1 mph2 km/h from ESE, gusts 4 mph6 km/h | 96% | 10% | 2 |
| Sat 12p | Sunny | 32°0° (likely 32°0° to 39°4°) | 32°0° | 0% | 2 mph3 km/h from ESE, gusts 5 mph9 km/h | 92% | 4% | 3 |
| Sat 1p | Sunny | 35°2° (likely 35°2° to 42°6°) | 32°0° | 0% | 3 mph5 km/h from ESE, gusts 6 mph10 km/h | 92% | 5% | 4 |
| Sat 2p | Mostly sunny | 38°3° (likely 38°3° to 44°7°) | 36°2° | 0% | 3 mph5 km/h from ESE, gusts 7 mph11 km/h | 89% | 18% | 4 |
| Sat 3p | Sunny | 40°4° (likely 40°4° to 46°8°) | 38°3° | 0% | 3 mph5 km/h from ESE, gusts 6 mph10 km/h | 83% | 7% | 3 |
| Sat 4p | Partly sunny | 40°4° (likely 40°4° to 47°8°) | 38°3° | 0% | 3 mph5 km/h from E, gusts 6 mph10 km/h | 81% | 36% | 3 |
| Sat 5p | Partly sunny | 41°5° (likely 40°4° to 46°8°) | 39°4° | 0% | 3 mph5 km/h from E, gusts 6 mph9 km/h | 77% | 41% | 1 |
| Sat 6p | Partly cloudy | 39°4° (likely 37°3° to 44°7°) | 37°3° | 0% | 3 mph5 km/h from E, gusts 5 mph7 km/h | 75% | 55% | 0 |
| Sat 7p | Cloudy | 37°3° (likely 35°2° to 41°5°) | 37°3° | 0% | 2 mph3 km/h from W, gusts 4 mph7 km/h | 83% | 51% | 0 |
| Sat 8p | Cloudy | 34°1° (likely 33°1° to 40°4°) | 34°1° | 0% | 2 mph3 km/h from W, gusts 3 mph5 km/h | 87% | 58% | 0 |
| Sat 9p | Cloudy | 31°−1° (likely 31°−1° to 38°3°) | 28°−2° | 0% | 3 mph5 km/h from W, gusts 3 mph5 km/h | 86% | 57% | 0 |
| Sat 10p | Mostly cloudy | 30°−1° (likely 30°−1° to 37°3°) | 30°−1° | 0% | 2 mph3 km/h from W, gusts 3 mph5 km/h | 89% | 61% | 0 |
| Sat 11p | Clear | 28°−2° (likely 28°−2° to 35°2°) | 28°−2° | 0% | 2 mph3 km/h from W, gusts 3 mph5 km/h | 94% | 28% | 0 |
| Sun 12a | Clear | 28°−2° (likely 28°−2° to 35°2°) | 28°−2° | 0% | 1 mph2 km/h from W, gusts 4 mph6 km/h | 94% | 23% | 0 |
| Sun 1a | Clear | 26°−3° (likely 26°−3° to 34°1°) | 26°−3° | 0% | 1 mph2 km/h from W, gusts 4 mph7 km/h | 99% | 13% | 0 |
| Sun 2a | Clear | 26°−3° (likely 26°−3° to 34°1°) | 26°−3° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 98% | 13% | 0 |
| Sun 3a | Partly cloudy | 26°−3° (likely 26°−3° to 34°1°) | 26°−3° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 99% | 25% | 0 |
| Sun 4a | Clear | 25°−4° (likely 25°−4° to 34°1°) | 25°−4° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 99% | 20% | 0 |
| Sun 5a | Clear | 24°−4° (likely 24°−4° to 34°1°) | 24°−4° | 0% | 1 mph2 km/h from W, gusts 5 mph8 km/h | 100% | 21% | 0 |
| Sun 6a | Clear | 24°−4° (likely 24°−4° to 34°1°) | 24°−4° | 0% | 1 mph2 km/h from W, gusts 5 mph8 km/h | 98% | 23% | 0 |
| Sun 7a | Clear | 23°−5° (likely 23°−5° to 33°1°) | 23°−5° | 0% | 1 mph2 km/h from W, gusts 6 mph9 km/h | 100% | 29% | 0 |
| Sun 8a | Sunny | 21°−6° (likely 21°−6° to 32°0°) | 21°−6° | 0% | 1 mph2 km/h from W, gusts 7 mph11 km/h | 100% | 34% | 0 |
| Sun 9a | Sunny | 24°−4° (likely 24°−4° to 33°1°) | 24°−4° | 0% | 1 mph2 km/h from NW, gusts 7 mph11 km/h | 99% | 33% | 0 |
| Sun 10a | Mostly cloudy | 27°−3° (likely 27°−3° to 35°2°) | 27°−3° | 0% | 1 mph2 km/h from NW, gusts 6 mph10 km/h | 100% | 35% | 1 |
| Sun 11a | Mostly sunny | 29°−2° (likely 29°−2° to 37°3°) | 29°−2° | 0% | 1 mph2 km/h from NW, gusts 7 mph11 km/h | 96% | 48% | 1 |
| Sun 12p | Mostly cloudy | 30°−1° (likely 30°−1° to 39°4°) | 30°−1° | 0% | 2 mph3 km/h from N, gusts 7 mph11 km/h | 89% | 57% | 2 |
| Sun 1p | Mostly cloudy | 32°0° (likely 32°0° to 40°4°) | 32°0° | 0% | 2 mph3 km/h from N, gusts 7 mph11 km/h | 88% | 56% | 3 |
| Sun 2p | Partly sunny | 34°1° (likely 34°1° to 41°5°) | 34°1° | 0% | 2 mph3 km/h from N, gusts 7 mph11 km/h | 85% | 69% | 3 |
| Sun 3p | Cloudy | 37°3° (likely 36°2° to 42°6°) | 34°1° | 0% | 3 mph5 km/h from N, gusts 8 mph12 km/h | 80% | 78% | 2 |
| Sun 4p | Partly sunny | 37°3° (likely 36°2° to 42°6°) | 34°1° | 0% | 3 mph5 km/h from N, gusts 8 mph12 km/h | 76% | 73% | 2 |
| Sun 5p | Partly sunny | 37°3° (likely 34°1° to 41°5°) | 34°1° | 0% | 3 mph5 km/h from N, gusts 8 mph13 km/h | 73% | 63% | 1 |
| Sun 6p | Mostly cloudy | 38°3° (likely 32°0° to 39°4°) | 36°2° | 0% | 3 mph5 km/h from NW, gusts 8 mph12 km/h | 73% | 61% | 0 |
| Sun 7p | Mostly cloudy | 34°1° (likely 29°−2° to 38°3°) | 31°−1° | 0% | 3 mph5 km/h from NW, gusts 5 mph8 km/h | 82% | 49% | 0 |
| Sun 8p | Mostly cloudy | 31°−1° (likely 28°−2° to 36°2°) | 28°−2° | 0% | 3 mph5 km/h from NW, gusts 4 mph7 km/h | 85% | 43% | 0 |
| Sun 9p | Partly cloudy | 29°−2° (likely 27°−3° to 34°1°) | 29°−2° | 0% | 2 mph3 km/h from NNW, gusts 4 mph7 km/h | 86% | 38% | 0 |
| Sun 10p | Partly cloudy | 28°−2° (likely 25°−4° to 33°1°) | 28°−2° | 0% | 2 mph3 km/h from NNW, gusts 4 mph7 km/h | 89% | 44% | 0 |
| Sun 11p | Cloudy | 27°−3° (likely 23°−5° to 32°0°) | 27°−3° | 0% | 2 mph3 km/h from NNW, gusts 4 mph6 km/h | 92% | 79% | 0 |
| Mon 12a | Cloudy | 27°−3° (likely 24°−4° to 32°0°) | 27°−3° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 94% | 92% | 0 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Cloudy. High 42°6°, low 21°−6°. Typical 53°12° / 30°−1°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 21°−6°Dry
Afternoon
noon–6 PM
Sunny, 41°5°Dry
Evening
6 PM–midnight
Cloudy, 34°1°Dry
Overnight
midnight–6 AM
Partly cloudy, 24°−4°Dry
Official NWS forecast
Today: Areas of fog before noon. Sunny, with a high near 42. Southeast wind 0 to 3 mph.
Tonight: Areas of fog. Mostly clear, with a low around 21. Southwest wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 42°6°–47°8°
- Low, likely
- 20°−7°–31°−1°
- Typical high / low
- 53°12° / 30°−1°
- Wind
- 7 mph12 km/h, gusts 15 mph24 km/h
- UV peak
- 4
Tomorrow, Oct 25. Mostly cloudy. High 39°4°, low 21°−6°. Typical 53°12° / 30°−1°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 21°−6°Dry
Afternoon
noon–6 PM
Cloudy, 37°3°Dry
Evening
6 PM–midnight
Partly cloudy, 31°−1°Dry
Overnight
midnight–6 AM
Cloudy, 27°−3°Dry
Official NWS forecast
Day: Partly sunny, with a high near 39. Northwest wind around 3 mph.
Night: Mostly cloudy, with a low around 21. North northwest wind 0 to 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 37°3°–42°6°
- Low, likely
- 21°−6°–31°−1°
- Typical high / low
- 53°12° / 30°−1°
- Wind
- 7 mph11 km/h
- UV peak
- 3
Monday, Oct 26. Partly sunny. High 45°7°, low 27°−3°. Typical 52°11° / 30°−1°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 27°−3°Dry
Afternoon
noon–6 PM
Cloudy, 45°7°Dry
Evening
6 PM–midnight
Cloudy, 37°3°30% chance
Overnight
midnight–6 AM
Drizzle, 35°2°30% chance · 0.04 in1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 45. East wind 0 to 3 mph.
Night: A chance of rain. Mostly cloudy, with a low around 27. South southwest wind 1 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 44°7°–48°9°
- Low, likely
- 23°−5°–29°−2°
- Typical high / low
- 52°11° / 30°−1°
- Wind
- 5 mph9 km/h
- UV peak
- 3
Tuesday, Oct 27. Drizzle. High 47°8°, low 24°−4°. Typical 52°11° / 29°−2°. Rain 0.06 in1.5 mm, 40% chance. Forecasts agree.
Morning
6 AM–noon
Drizzle, 35°2°30% chance
Afternoon
noon–6 PM
Drizzle, 48°9°30% chance
Evening
6 PM–midnight
Partly cloudy, 39°4°20% chance
Overnight
midnight–6 AM
Clear, 31°−1°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 47. West southwest wind 1 to 8 mph.
Night: A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 24.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 47°8°–49°9°
- Low, likely
- 24°−4°–36°2°
- Typical high / low
- 52°11° / 29°−2°
- Wind
- 20 mph32 km/h, gusts 34 mph55 km/h
- UV peak
- 3
Wednesday, Oct 28. Snow. High 44°7°, low 22°−6°. Typical 51°11° / 29°−2°. Snow, 20% chance. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 30°−1°Dry
Afternoon
noon–6 PM
Mostly sunny, 49°10°Dry
Evening
6 PM–midnight
Clear, 39°4°Dry
Overnight
midnight–6 AM
Cloudy, 32°0°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow before 3pm, then a slight chance of rain and snow. Partly sunny, with a high near 44.
Night: A slight chance of snow. Mostly cloudy, with a low around 22.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 44°7°–51°11°
- Low, likely
- 22°−6°–31°−1°
- Typical high / low
- 51°11° / 29°−2°
- Wind
- 6 mph10 km/h, gusts 13 mph20 km/h
- UV peak
- 3
Thursday, Oct 29. Snow. High 42°6°, low 22°−6°. Typical 51°11° / 28°−2°. Snow 0.02 in0.5 mm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 31°0°Dry
Afternoon
noon–6 PM
Sunny, 45°7°Dry
Evening
6 PM–midnight
Partly cloudy, 37°3°Dry
Overnight
midnight–6 AM
Cloudy, 33°0°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 42.
Night: A slight chance of snow. Mostly cloudy, with a low around 22.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 39°4°–50°10°
- Low, likely
- 22°−6°–32°0°
- Typical high / low
- 51°11° / 28°−2°
- Wind
- 8 mph13 km/h, gusts 17 mph27 km/h
- UV peak
- 3
Friday, Oct 30. Snow. High 44°7°, low 31°−1°. Typical 50°10° / 28°−2°. Snow 0–1 in0–3 cm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 33°0°Dry
Afternoon
noon–6 PM
Sunny, 42°6°Dry
Evening
6 PM–midnight
Cloudy, 37°3°Dry
Overnight
midnight–6 AM
Cloudy, 32°0°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 44.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 39°4°–46°8°
- Low, likely
- 26°−3°–34°1°
- Typical high / low
- 50°10° / 28°−2°
- Wind
- 7 mph11 km/h, gusts 17 mph28 km/h
- UV peak
- 3
Saturday, Oct 31. Cloudy. High 45°7°, low 28°−2°. Typical 50°10° / 28°−2°. Dry. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 32°0°Dry
Afternoon
noon–6 PM
Mostly sunny, 45°7°Dry
Evening
6 PM–midnight
Clear, 35°2°Dry
Overnight
midnight–6 AM
Clear, 27°−3°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
- 39°4°–55°13°
- Low, likely
- 21°−6°–35°2°
- Typical high / low
- 50°10° / 28°−2°
- Wind
- 7 mph10 km/h, gusts 25 mph40 km/h
- UV peak
- 3
Sunday, Nov 1. Mostly sunny. High 45°7°, low 27°−3°. Typical 49°9° / 27°−3°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 29°−2°Dry
Afternoon
noon–6 PM
Sunny, 43°6°Dry
Evening
6 PM–midnight
Clear, 37°3°Dry
Overnight
midnight–6 AM
Clear, 34°1°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
- 39°4°–48°9°
- Low, likely
- 18°−8°–33°1°
- Typical high / low
- 49°9° / 27°−3°
- Wind
- 11 mph18 km/h, gusts 32 mph51 km/h
- UV peak
- 3
Monday, Nov 2. Sunny. High 49°9°, low 31°−1°. Typical 49°9° / 27°−3°. Dry. Forecasts agree.
Morning
6 AM–noon
Mostly sunny, 39°4°Dry
Afternoon
noon–6 PM
Sunny, 50°10°Dry
Evening
6 PM–midnight
Clear, 37°3°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 agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 48°9°–50°10°
- Low, likely
- 29°−2°–33°1°
- Typical high / low
- 49°9° / 27°−3°
- Wind
- 9 mph14 km/h, gusts 16 mph26 km/h
- UV peak
- 3
The outlook
Today
Dry, high 42°, low 21°.
Tomorrow
Dry, high 39°, low 21°, cooling off.
Monday
Dry, high 45°, low 27°, warming up.
Rest of week
Highs 42–49°; chance of precipitation on Tuesday.
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
Prickly Pear Creek near Clancy
6.5 mi- Level
- 1.1 ft
- Flow
- 51 cfs
Reading from Fri 10:30 PM · NWS gauge page
Missouri River at Helena Valley Reservoir
7.2 mi- Level
- 3818 ft
Reading from Sat 12:15 AM · NWS gauge page
Tenmile Creek (MT) near Rimini
12 mi- Level
- 2.0 ft
- Flow
- 22 cfs
Reading from Fri 11:45 PM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Pipes: watch the cold
Tonight’s low: 21°−6°
Overnight low near 21°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.
Heating this week
About 60% less heating than a typical week.
This week 70Typical 172
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 21 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 27°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?
Helena Airport Asos · official normals 1991–2020 · records 1880–2026
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° / 21°−6°
- Record high
- 72°22° in 1959
- Record low
- −1°−18° in 1919
Last 7 days vs normal
On average 6°3° warmer than normal (daily mean temperature).
- +6°+3°SunOct 18
- +5°+3°MonOct 19
- +6°+3°TueOct 20
- +5°+3°WedOct 21
- +8°+4°ThuOct 22
- —FriOct 23
- —SatOct 24
Helena weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:58 AM, sunset 6:25 PM.
- Daylight
- 10 h 27 min
- Losing 3 min 8 s a day; shortest Dec 21, 1 h 53 min less
- Golden hour
- 5:42–6:44 PM
- Morning 7:39–8:41 AM
- Blue hour
- 6:44–6:56 PM
- Morning 7:27–7:39 AM; first light 7:27 AM
Stars tonight? Fair
Clear 1:36–7:27 AM, but the moon is 96% lit and up.
Moon
Waxing gibbous
96% lit · growing
- Today
- sets 6:13 AM · rises 5:26 PM
- Full moon
- Oct 25
- New moon
- Nov 9
