Big Sandy Creek (MT) near Havre
16 mi- Level
- 2.4 ft
- Flow
- 20 cfs
Reading from Sat 1:30 AM · NWS gauge page
Appearance
Ends in 2 h 6 min
Issued for this forecast zone · National Weather Service Great Falls MT
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 3:00 AM MDT at KHVR
Clear and 30°−1°, 12°7° colder than a typical Oct 24, freeze watch tonight, low 23°−5°.
Today: low 23°−5° (likely 23°−5° to 28°−2°), high 41°5° (likely 38°3° to 44°7°).
Now 30°−1°
Clear · Feels like 19°−7°
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 3a | Clear | 27°−3° (likely 26°−3° to 31°−1°) | 20°−7° | 0% | 7 mph11 km/h from W, gusts 12 mph20 km/h | 92% | 15% | 0 |
| Sat 4a | Clear | 27°−3° (likely 25°−4° to 30°−1°) | 20°−7° | 0% | 6 mph10 km/h from W, gusts 11 mph18 km/h | 91% | 12% | 0 |
| Sat 5a | Clear | 25°−4° (likely 25°−4° to 28°−2°) | 18°−8° | 0% | 6 mph10 km/h from WSW, gusts 11 mph17 km/h | 91% | 11% | 0 |
| Sat 6a | Clear | 24°−4° (likely 24°−4° to 28°−2°) | 18°−8° | 0% | 5 mph8 km/h from WSW, gusts 11 mph18 km/h | 91% | 7% | 0 |
| Sat 7a | Clear | 24°−4° (likely 24°−4° to 28°−2°) | 18°−8° | 0% | 5 mph8 km/h from SW, gusts 10 mph17 km/h | 100% | 27% | 0 |
| Sat 8a | Sunny | 23°−5° (likely 23°−5° to 28°−2°) | 18°−8° | 0% | 3 mph5 km/h from SW, gusts 9 mph14 km/h | 96% | 26% | 0 |
| Sat 9a | Partly sunny | 26°−3° (likely 26°−3° to 30°−1°) | 22°−6° | 0% | 3 mph5 km/h from SSW, gusts 8 mph13 km/h | 93% | 42% | 0 |
| Sat 10a | Mostly sunny | 31°−1° (likely 30°−1° to 33°1°) | 28°−2° | 0% | 3 mph5 km/h from SSW, gusts 9 mph14 km/h | 84% | 27% | 1 |
| Sat 11a | Sunny | 34°1° (likely 34°1° to 36°2°) | 34°1° | 0% | 2 mph3 km/h from SW, gusts 8 mph13 km/h | 77% | 6% | 2 |
| Sat 12p | Sunny | 36°2° (likely 36°2° to 39°4°) | 36°2° | 0% | 2 mph3 km/h from SW, gusts 8 mph13 km/h | 74% | 4% | 3 |
| Sat 1p | Sunny | 37°3° (likely 37°3° to 41°5°) | 37°3° | 0% | 2 mph3 km/h from SW, gusts 10 mph15 km/h | 68% | 3% | 4 |
| Sat 2p | Sunny | 39°4° (likely 37°3° to 43°6°) | 39°4° | 0% | 1 mph2 km/h from SSW, gusts 10 mph17 km/h | 67% | 1% | 4 |
| Sat 3p | Sunny | 41°5° (likely 38°3° to 44°7°) | 41°5° | 0% | 1 mph2 km/h from S, gusts 8 mph12 km/h | 62% | 21% | 3 |
| Sat 4p | Sunny | 41°5° (likely 37°3° to 44°7°) | 41°5° | 0% | 1 mph2 km/h from E, gusts 9 mph14 km/h | 58% | 40% | 2 |
| Sat 5p | Sunny | 41°5° (likely 36°2° to 43°6°) | 41°5° | 0% | 2 mph3 km/h from ENE, gusts 9 mph14 km/h | 58% | 40% | 1 |
| Sat 6p | Clear | 38°3° (likely 34°1° to 39°4°) | 36°2° | 0% | 3 mph5 km/h from ENE, gusts 7 mph12 km/h | 66% | 0% | 0 |
| Sat 7p | Clear | 35°2° (likely 33°1° to 36°2°) | 32°0° | 0% | 3 mph5 km/h from E, gusts 10 mph15 km/h | 74% | 2% | 0 |
| Sat 8p | Mostly clear | 33°1° (likely 32°0° to 35°2°) | 29°−2° | 0% | 5 mph8 km/h from E, gusts 9 mph15 km/h | 79% | 41% | 0 |
| Sat 9p | Mostly cloudy | 31°−1° (likely 31°−1° to 36°2°) | 25°−4° | 0% | 6 mph10 km/h from ESE, gusts 9 mph14 km/h | 76% | 48% | 0 |
| Sat 10p | Partly cloudy | 32°0° (likely 31°−1° to 36°2°) | 26°−3° | 0% | 6 mph10 km/h from ESE, gusts 11 mph17 km/h | 74% | 59% | 0 |
| Sat 11p | Cloudy | 31°−1° (likely 31°−1° to 36°2°) | 25°−4° | 0% | 6 mph10 km/h from ESE, gusts 11 mph18 km/h | 74% | 65% | 0 |
| Sun 12a | Mostly clear | 31°−1° (likely 31°−1° to 36°2°) | 25°−4° | 0% | 6 mph10 km/h from ESE, gusts 10 mph16 km/h | 75% | 38% | 0 |
| Sun 1a | Partly cloudy | 31°−1° (likely 31°−1° to 37°3°) | 25°−4° | 0% | 6 mph10 km/h from ESE, gusts 9 mph14 km/h | 77% | 40% | 0 |
| Sun 2a | Clear | 30°−1° (likely 30°−1° to 35°2°) | 23°−5° | 0% | 7 mph11 km/h from ESE, gusts 10 mph17 km/h | 78% | 33% | 0 |
| Sun 3a | Clear | 30°−1° (likely 30°−1° to 34°1°) | 23°−5° | 0% | 7 mph11 km/h from ESE, gusts 13 mph20 km/h | 80% | 2% | 0 |
| Sun 4a | Clear | 29°−2° (likely 29°−2° to 33°1°) | 22°−6° | 0% | 7 mph11 km/h from ESE, gusts 15 mph24 km/h | 80% | 2% | 0 |
| Sun 5a | Clear | 27°−3° (likely 27°−3° to 33°1°) | 20°−7° | 0% | 7 mph11 km/h from E, gusts 13 mph21 km/h | 82% | 1% | 0 |
| Sun 6a | Clear | 25°−4° (likely 25°−4° to 32°0°) | 17°−8° | 0% | 7 mph11 km/h from E, gusts 11 mph18 km/h | 82% | 2% | 0 |
| Sun 7a | Clear | 24°−4° (likely 24°−4° to 32°0°) | 16°−9° | 0% | 7 mph11 km/h from E, gusts 10 mph16 km/h | 91% | 3% | 0 |
| Sun 8a | Sunny | 23°−5° (likely 23°−5° to 31°−1°) | 15°−9° | 0% | 7 mph11 km/h from E, gusts 8 mph13 km/h | 87% | 2% | 0 |
| Sun 9a | Sunny | 26°−3° (likely 26°−3° to 31°−1°) | 20°−7° | 0% | 5 mph8 km/h from E, gusts 9 mph14 km/h | 85% | 1% | 0 |
| Sun 10a | Partly sunny | 31°−1° (likely 31°−1° to 34°1°) | 26°−3° | 0% | 5 mph8 km/h from E, gusts 9 mph15 km/h | 78% | 21% | 1 |
| Sun 11a | Partly sunny | 34°1° (likely 34°1° to 38°3°) | 30°−1° | 0% | 5 mph8 km/h from E, gusts 10 mph16 km/h | 74% | 56% | 2 |
| Sun 12p | Mostly sunny | 37°3° (likely 37°3° to 40°4°) | 32°0° | 0% | 6 mph10 km/h from E, gusts 8 mph13 km/h | 71% | 52% | 3 |
| Sun 1p | Sunny | 38°3° (likely 38°3° to 41°5°) | 34°1° | 0% | 6 mph10 km/h from E, gusts 7 mph12 km/h | 68% | 32% | 4 |
| Sun 2p | Sunny | 39°4° (likely 39°4° to 42°6°) | 35°2° | 0% | 6 mph10 km/h from E, gusts 8 mph13 km/h | 68% | 12% | 4 |
| Sun 3p | Mostly sunny | 41°5° (likely 41°5° to 44°7°) | 37°3° | 0% | 6 mph10 km/h from E, gusts 8 mph12 km/h | 66% | 41% | 3 |
| Sun 4p | Mostly sunny | 41°5° (likely 41°5° to 44°7°) | 37°3° | 0% | 6 mph10 km/h from E, gusts 7 mph12 km/h | 61% | 48% | 2 |
| Sun 5p | Mostly sunny | 42°6° (likely 39°4° to 44°7°) | 38°3° | 0% | 6 mph10 km/h from E, gusts 6 mph10 km/h | 60% | 44% | 1 |
| Sun 6p | Clear | 38°3° (likely 36°2° to 40°4°) | 34°1° | 0% | 6 mph10 km/h from E, gusts 7 mph11 km/h | 66% | 43% | 0 |
| Sun 7p | Partly cloudy | 36°2° (likely 33°1° to 37°3°) | 31°−1° | 0% | 6 mph10 km/h from E, gusts 11 mph18 km/h | 73% | 46% | 0 |
| Sun 8p | Partly cloudy | 34°1° (likely 31°−1° to 37°3°) | 29°−2° | 0% | 6 mph10 km/h from E, gusts 14 mph22 km/h | 74% | 47% | 0 |
| Sun 9p | Cloudy | 33°1° (likely 31°−1° to 39°4°) | 26°−3° | 0% | 8 mph13 km/h from E, gusts 15 mph24 km/h | 72% | 67% | 0 |
| Sun 10p | Cloudy | 32°0° (likely 31°−1° to 39°4°) | 25°−4° | 0% | 8 mph13 km/h from E, gusts 16 mph26 km/h | 71% | 69% | 0 |
| Sun 11p | Partly cloudy | 32°0° (likely 31°−1° to 39°4°) | 25°−4° | 0% | 8 mph13 km/h from E, gusts 16 mph26 km/h | 71% | 70% | 0 |
| Mon 12a | Partly cloudy | 32°0° (likely 30°−1° to 40°4°) | 25°−4° | 0% | 8 mph13 km/h from E, gusts 16 mph25 km/h | 71% | 63% | 0 |
| Mon 1a | Partly cloudy | 31°−1° (likely 27°−3° to 42°6°) | 24°−4° | 0% | 8 mph13 km/h from E, gusts 18 mph28 km/h | 72% | 68% | 0 |
| Mon 2a | Partly cloudy | 31°−1° (likely 27°−3° to 42°6°) | 24°−4° | 0% | 8 mph13 km/h from E, gusts 16 mph26 km/h | 75% | 46% | 0 |
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Patchy fog before 9am. Mostly sunny, with a high near 41. South southwest wind 1 to 5 mph.
Tonight: Partly cloudy, with a low around 23. West southwest wind around 7 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Day: Mostly sunny, with a high near 42. East wind around 7 mph.
Night: Partly cloudy, with a low around 25. East wind around 8 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 46. East southeast wind around 5 mph.
Night: Mostly cloudy, with a low around 29. Southeast wind 3 to 9 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 45. South southwest wind 1 to 5 mph.
Night: A chance of rain before 3am, then a chance of rain and snow. Mostly cloudy, with a low around 28.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before noon. Mostly sunny, with a high near 43. New snow accumulation of less than half an inch possible.
Night: A slight chance of snow. Mostly cloudy, with a low around 23.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
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 40.
Night: A slight chance of snow before 9pm, then a slight chance of rain and snow. Mostly cloudy, with a low around 24.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
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.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
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.
Dry, high 41°, low 23°.
Dry, high 42°, low 25°.
Dry, high 46°, low 29°, warming up.
Mostly dry, highs 39–45°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (TFX) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Reading from Sat 1:30 AM · NWS gauge page
Reading from Sat 2:15 AM · NWS gauge page
Reading from Sat 2:15 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
Tonight’s low: 23°−5°
Overnight low near 23°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.
About 65% less heating than a typical week.
Heating degree days, base 65°F
47, 17 and 5°F are the test points heat pumps are rated at. About 3 hours are near freezing and damp, when outdoor units defrost more often.
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.
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is 12°7° colder than typical.
On average 9°5° warmer than normal (daily mean temperature).
Boneau weather by month: normals, records, snow and freeze dates
Sunrise 7:53 AM, sunset 6:13 PM.
Mostly clear 3:24–7 AM, but the moon is 96% lit and up.
Waxing gibbous
96% lit · growing