Observed 1:00 PM MDT at KGTF

Sun Prairie, MT weather

Sunny and 36°2°, 11°6° colder than a typical Oct 24, freeze watch tonight, low 24°−4°.

Mostly agree

Now 36°2°

Sunny · Feels like 27°−3°

Feels like: 27°−3°; Wind chill from 13 mph20 km/h wind · air 36°2°
Wind: 13 mph20 km/h; From the south-southwest. Up to 13 mph20 km/h through 1 AM
Dew point: 27°−3°; Dry, static shocks likely
UV index: 4Moderate; Moderate until 5 PM

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Hard freeze tonight 10 PM–11 AM (low 23°−5°)
Fog tonight midnight–1 AM
Fog tonight 2–3 AM
Fog tomorrow 8–9 AM
Hard freeze tomorrow night 8 PM–11 AM (low 21°−6°)

This afternoonNear 42°6° · Clear
TonightDown to 25°−4° by 5 AM · freezing, low 25°−4° · Partly cloudy
Tomorrow morningUp to 33°1° by 11 AM · freezing, low 23°−5° · Partly cloudy
Tomorrow afternoonUp to 40°4° by 4 PM · Mostly cloudy
Tomorrow nightDown to 23°−5° by 4 AM · freezing, low 23°−5° · Mostly cloudy
Monday morningUp to 33°1° by 11 AM · freezing, low 21°−6° · Mostly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 1p	Sunny	42°6° (likely 38°3° to 44°7°)	39°4°	0%	5 mph8 km/h from S, gusts 18 mph30 km/h	62%	4%	4
Sat 2p	Sunny	42°6° (likely 40°4° to 45°7°)	38°3°	0%	6 mph10 km/h from S, gusts 18 mph28 km/h	58%	3%	4
Sat 3p	Sunny	42°6° (likely 42°6° to 46°8°)	39°4°	0%	5 mph8 km/h from S, gusts 15 mph25 km/h	58%	2%	4
Sat 4p	Sunny	42°6° (likely 42°6° to 47°8°)	39°4°	0%	5 mph8 km/h from SSE, gusts 14 mph22 km/h	58%	1%	3
Sat 5p	Sunny	42°6° (likely 40°4° to 46°8°)	39°4°	0%	5 mph8 km/h from ESE, gusts 9 mph14 km/h	58%	10%	1
Sat 6p	Clear	40°4° (likely 37°3° to 43°6°)	37°3°	0%	5 mph8 km/h from E, gusts 8 mph14 km/h	66%	0%	0
Sat 7p	Clear	37°3° (likely 34°1° to 39°4°)	34°1°	0%	3 mph5 km/h from E, gusts 10 mph16 km/h	74%	21%	0
Sat 8p	Mostly clear	34°1° (likely 32°0° to 37°3°)	31°−1°	0%	3 mph5 km/h from E, gusts 9 mph15 km/h	83%	28%	0
Sat 9p	Mostly cloudy	33°1° (likely 31°−1° to 35°2°)	30°−1°	0%	3 mph5 km/h from ENE, gusts 8 mph13 km/h	83%	70%	0
Sat 10p	Partly cloudy	31°−1° (likely 30°−1° to 34°1°)	31°−1°	0%	2 mph3 km/h from ENE, gusts 7 mph11 km/h	86%	38%	0
Sat 11p	Partly cloudy	30°−1° (likely 29°−2° to 33°1°)	26°−3°	0%	3 mph5 km/h from ENE, gusts 6 mph10 km/h	88%	47%	0
Sun 12a	Fog	29°−2° (likely 28°−2° to 33°1°)	25°−4°	0%	3 mph5 km/h from NE, gusts 7 mph12 km/h	91%	54%	0
Sun 1a	Partly cloudy	28°−2° (likely 28°−2° to 33°1°)	28°−2°	0%	2 mph3 km/h from NNE, gusts 8 mph12 km/h	92%	59%	0
Sun 2a	Fog	27°−3° (likely 27°−3° to 32°0°)	23°−5°	0%	3 mph5 km/h from N, gusts 6 mph10 km/h	93%	30%	0
Sun 3a	Clear	27°−3° (likely 27°−3° to 32°0°)	23°−5°	0%	3 mph5 km/h from N, gusts 6 mph10 km/h	93%	27%	0
Sun 4a	Clear	26°−3° (likely 26°−3° to 32°0°)	22°−6°	0%	3 mph5 km/h from NNW, gusts 5 mph8 km/h	93%	29%	0
Sun 5a	Clear	25°−4° (likely 25°−4° to 32°0°)	21°−6°	0%	3 mph5 km/h from NNW, gusts 7 mph12 km/h	94%	24%	0
Sun 6a	Clear	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	2 mph3 km/h from NNW, gusts 8 mph13 km/h	95%	25%	0
Sun 7a	Clear	24°−4° (likely 24°−4° to 32°0°)	24°−4°	0%	2 mph3 km/h from NNW, gusts 7 mph12 km/h	95%	26%	0
Sun 8a	Fog	23°−5° (likely 23°−5° to 31°−1°)	23°−5°	0%	2 mph3 km/h from NNW, gusts 8 mph13 km/h	95%	41%	0
Sun 9a	Cloudy	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	2 mph3 km/h from NNW, gusts 8 mph13 km/h	91%	66%	0
Sun 10a	Cloudy	30°−1° (likely 29°−2° to 33°1°)	30°−1°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	81%	70%	1
Sun 11a	Cloudy	33°1° (likely 31°−1° to 34°1°)	33°1°	0%	2 mph3 km/h from NNE, gusts 6 mph10 km/h	72%	78%	2
Sun 12p	Cloudy	35°2° (likely 32°0° to 35°2°)	35°2°	0%	2 mph3 km/h from NNE, gusts 6 mph9 km/h	66%	77%	3
Sun 1p	Cloudy	36°2° (likely 34°1° to 36°2°)	36°2°	0%	2 mph3 km/h from NE, gusts 5 mph8 km/h	64%	81%	4
Sun 2p	Cloudy	38°3° (likely 35°2° to 38°3°)	36°2°	0%	3 mph5 km/h from NE, gusts 6 mph9 km/h	60%	83%	3
Sun 3p	Mostly sunny	39°4° (likely 36°2° to 39°4°)	37°3°	0%	3 mph5 km/h from ENE, gusts 6 mph10 km/h	57%	80%	3
Sun 4p	Partly sunny	40°4° (likely 36°2° to 40°4°)	40°4°	0%	2 mph3 km/h from ENE, gusts 7 mph12 km/h	57%	75%	2
Sun 5p	Partly sunny	40°4° (likely 36°2° to 40°4°)	40°4°	0%	2 mph3 km/h from E, gusts 9 mph14 km/h	57%	73%	1
Sun 6p	Cloudy	37°3° (likely 34°1° to 37°3°)	37°3°	0%	1 mph2 km/h from NE, gusts 8 mph13 km/h	65%	72%	0
Sun 7p	Cloudy	34°1° (likely 32°0° to 36°2°)	34°1°	0%	1 mph2 km/h from NE, gusts 5 mph8 km/h	74%	66%	0
Sun 8p	Cloudy	32°0° (likely 30°−1° to 36°2°)	32°0°	0%	1 mph2 km/h from NE, gusts 7 mph11 km/h	85%	69%	0
Sun 9p	Cloudy	29°−2° (likely 29°−2° to 35°2°)	29°−2°	0%	0 mph0 km/h, gusts 9 mph14 km/h	87%	73%	0
Sun 10p	Cloudy	28°−2° (likely 28°−2° to 34°1°)	28°−2°	0%	0 mph0 km/h, gusts 7 mph11 km/h	91%	87%	0
Sun 11p	Cloudy	27°−3° (likely 27°−3° to 33°1°)	27°−3°	0%	0 mph0 km/h, gusts 5 mph7 km/h	93%	96%	0
Mon 12a	Cloudy	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	97%	97%	0
Mon 1a	Cloudy	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	0 mph0 km/h, gusts 3 mph6 km/h	97%	91%	0
Mon 2a	Partly cloudy	25°−4° (likely 25°−4° to 31°−1°)	25°−4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	97%	80%	0
Mon 3a	Mostly cloudy	24°−4° (likely 24°−4° to 31°−1°)	24°−4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	96%	74%	0
Mon 4a	Cloudy	23°−5° (likely 23°−5° to 31°−1°)	23°−5°	0%	0 mph0 km/h, gusts 2 mph4 km/h	95%	76%	0
Mon 5a	Cloudy	23°−5° (likely 23°−5° to 31°−1°)	23°−5°	0%	0 mph0 km/h, gusts 2 mph3 km/h	95%	79%	0
Mon 6a	Cloudy	21°−6° (likely 21°−6° to 30°−1°)	21°−6°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	75%	0
Mon 7a	Partly cloudy	22°−6° (likely 15°−9° to 28°−2°)	22°−6°	0%	0 mph0 km/h, gusts 2 mph3 km/h	95%	70%	0
Mon 8a	Mostly cloudy	23°−5° (likely 16°−9° to 28°−2°)	23°−5°	0%	0 mph0 km/h, gusts 2 mph3 km/h	94%	60%	0
Mon 9a	Partly sunny	24°−4° (likely 18°−8° to 30°−1°)	24°−4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	68%	0
Mon 10a	Partly sunny	28°−2° (likely 23°−5° to 32°0°)	28°−2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	84%	60%	1
Mon 11a	Partly sunny	33°1° (likely 28°−2° to 34°1°)	33°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	73%	61%	2
Mon 12p	Cloudy	38°3° (likely 32°0° to 38°3°)	38°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	64%	79%	3

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Partly sunny. High 42°6°, low 23°−5°. Typical 53°12° / 30°−1°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Sunny, 42°6°
  Dry
2. Evening
  6 PM–midnight
  Mostly cloudy, 34°1°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 25°−4°
  Dry
Official NWS forecast
Today: Sunny, with a high near 42. South southeast wind around 6 mph.
Tonight: Patchy fog after midnight. Partly cloudy, with a low around 23. Northeast wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
42°6°–47°8°
Low, likely
21°−6°–29°−2°
Typical high / low
53°12° / 30°−1°
Wind
15 mph24 km/h, gusts 27 mph44 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 40°4°, low 20°−7°. Typical 52°11° / 29°−2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 23°−5°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 40°4°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 32°0°
  Dry
4. Overnight
  midnight–6 AM
  Mostly cloudy, 23°−5°
  Dry
Official NWS forecast
Day: Areas of fog before 10am. Mostly sunny, with a high near 40. North northeast wind around 3 mph.
Night: Mostly cloudy, with a low around 20. North northeast wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
36°2°–40°4°
Low, likely
20°−7°–31°−1°
Typical high / low
52°11° / 29°−2°
Wind
7 mph11 km/h, gusts 13 mph21 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 43°6°, low 27°−3°. Typical 52°11° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 23°−5°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 42°5°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 33°1°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 30°−1°
  20% chance · 0.04 in0.9 mm
Official NWS forecast
Day: Partly sunny, with a high near 43. Northeast wind 0 to 5 mph.
Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 27. West wind around 2 mph. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
40°4°–43°6°
Low, likely
19°−7°–27°−3°
Typical high / low
52°11° / 29°−2°
Wind
6 mph10 km/h
UV peak
4
Tuesday, Oct 27. Rain. High 50°10°, low 30°−1°. Typical 52°11° / 29°−2°. Rain 0.14 in3.6 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 35°2°
  20% chance · 0.04 in1 mm
2. Afternoon
  noon–6 PM
  Rain, 49°10°
  20% chance · 0.04 in0.9 mm
3. Evening
  6 PM–midnight
  Cloudy, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Mostly cloudy, with a high near 50. Southwest wind 2 to 20 mph, with gusts as high as 32 mph.
Night: Mostly cloudy, with a low around 30. Southwest wind around 14 mph, with gusts as high as 22 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
45°7°–53°12°
Low, likely
26°−3°–33°1°
Typical high / low
52°11° / 29°−2°
Wind
22 mph35 km/h, gusts 35 mph57 km/h
UV peak
1
Wednesday, Oct 28. Mostly cloudy. High 49°9°, low 26°−3°. Typical 51°11° / 28°−2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 30°−1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 49.
Night: Mostly cloudy, with a low around 26.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
49°9°–52°11°
Low, likely
26°−3°–39°4°
Typical high / low
51°11° / 28°−2°
Wind
22 mph36 km/h, gusts 36 mph58 km/h
UV peak
3
Thursday, Oct 29. Snow. High 41°5°, low 24°−4°. Typical 51°11° / 28°−2°. Snow < 1 in< 2 cm, 10% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 38°3°
  Dry
3. Evening
  6 PM–midnight
  Snow, 34°1°
  40% chance · 0.1 in0.3 cm
4. Overnight
  midnight–6 AM
  Snow, 30°−1°
  40% chance · 0.3 in0.7 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 41.
Night: A chance of snow. Mostly cloudy, with a low around 24. Little or no snow accumulation expected.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
38°3°–42°6°
Low, likely
24°−4°–32°0°
Typical high / low
51°11° / 28°−2°
Wind
11 mph17 km/h, gusts 16 mph26 km/h
UV peak
3
Friday, Oct 30. Snow. High 43°6°, low 24°−4°. Typical 50°10° / 28°−2°. Snow 0–2 in0–5 cm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 28°−2°
  30% chance · 0.4 in0.9 cm
2. Afternoon
  noon–6 PM
  Cloudy, 36°2°
  30% chance
3. Evening
  6 PM–midnight
  Snow, 31°0°
  20% chance · 0.02 in0.5 mm
4. Overnight
  midnight–6 AM
  Cloudy, 25°−4°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before noon, then a slight chance of rain and snow. Mostly cloudy, with a high near 43. New snow accumulation of less than half an inch possible.
Night: A chance of snow before midnight. Mostly cloudy, with a low around 24. Little or no snow accumulation expected.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
32°0°–43°6°
Low, likely
21°−6°–32°0°
Typical high / low
50°10° / 28°−2°
Wind
9 mph15 km/h, gusts 16 mph25 km/h
UV peak
2
Saturday, Oct 31. Snow. High 39°4°, low 24°−4°. Typical 50°10° / 28°−2°. Snow 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 25°−4°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 36°2°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 33°0°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 31°−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
33°1°–41°5°
Low, likely
11°−12°–32°0°
Typical high / low
50°10° / 28°−2°
Wind
21 mph34 km/h, gusts 30 mph47 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 46°8°, low 30°−1°. Typical 49°9° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 46°8°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  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
36°2°–53°12°
Low, likely
28°−2°–32°0°
Typical high / low
49°9° / 27°−3°
Wind
19 mph31 km/h, gusts 32 mph52 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 48°9°, low 33°1°. Typical 49°9° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 46°8°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 39°4°
  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°–55°13°
Low, likely
24°−4°–39°4°
Typical high / low
49°9° / 27°−3°
Wind
33 mph53 km/h, gusts 61 mph98 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 42°, low 23°.
Tomorrow
Dry, high 40°, low 20°.
Monday
Dry, high 43°, low 27°, warming up.
Rest of week
Highs 39–50°; 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

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Sun River near Vaughn

1.2 mi

Below flood stage

Level: 2.6 ft
Flow: 624 cfs

Reading from Sat 11 AM · NWS gauge page

Muddy Creek at Vaughn

3.1 mi

Below flood stage

Level: 3.4 ft
Flow: 82 cfs

Reading from Sat 11:30 AM · NWS gauge page

Missouri River near Ulm

8.3 mi

Below flood stage

Level: 3.2 ft
Flow: 3,690 cfs

Reading from Sat 11:30 AM · NWS gauge page

Tank Coulee

12 mi

Level: 0.8 ft

Reading from Sat 11:45 AM · 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: 24°−4°

Overnight low near 24°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.

Heating this week

About 61% less heating than a typical week.

This week 67Typical 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 11 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 27°F).

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.

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

Sun Prairie weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 23 min; Losing 3 min 17 s a day; shortest Dec 21, 1 h 57 min less
Golden hour: 5:38–6:40 PM; Morning 7:38–8:41 AM
Blue hour: 6:40–6:52 PM; Morning 7:26–7:38 AM; first light 7:26 AM

Stars tonight? Fair

Mostly clear 6:52–8 PM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 6:11 AM · rises 5:22 PM
Full moon: Oct 25
New moon: Nov 9

Looking southeast from Sun Prairie. The highest point on the skyline is about 9,100 ft, 56 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Sun Prairie, MT weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Sun River near Vaughn

Muddy Creek at Vaughn

Missouri River near Ulm

Tank Coulee

For your home

Pipes: watch the cold

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon