Observed 8:55 PM MDT at KGTF

Great Falls, MT weather

Clear and 34°1°, 8°4° colder than a typical Oct 24, freeze watch tonight, low 24°−4°.

Forecasts agree

Now 34°1°

Clear · Feels like 27°−3°

Feels like: 27°−3°; Wind chill from 8 mph13 km/h wind · air 34°1°
Wind: 8 mph13 km/h; From the east. Up to 8 mph13 km/h through 9 AM
Dew point: 25°−4°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 12–4 PM · peak 4

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Hard freeze tonight 11 PM–11 AM (low 24°−4°)
Fog tonight 2–6 AM
Fog tomorrow 8–10 AM
Above 30°−1° tomorrow by 10 AM
Hard freeze tomorrow night 9 PM–11 AM (low 23°−5°)

TonightDown to 26°−3° by 5 AM · Partly cloudy · freezing, low 26°−3°
Tomorrow morningUp to 33°1° by 11 AM · freezing, low 24°−4° · Partly cloudy
Tomorrow afternoonUp to 39°4° by 4 PM · Mostly cloudy
Tomorrow nightDown to 24°−4° by 5 AM · freezing, low 24°−4° · Mostly cloudy
Monday morningUp to 34°1° by 11 AM · freezing, low 23°−5° · Cloudy
Monday afternoonUp to 42°6° by 3 PM · Mostly cloudy
Monday nightNear 39°4° · rain chance 10% · 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 9p	Partly cloudy	34°1° (likely 31°−1° to 34°1°)	34°1°	0%	2 mph3 km/h from ENE, gusts 6 mph10 km/h	79%	35%	0
Sat 10p	Partly cloudy	33°1° (likely 30°−1° to 33°1°)	33°1°	0%	1 mph2 km/h from ENE, gusts 4 mph7 km/h	83%	71%	0
Sat 11p	Mostly clear	31°−1° (likely 30°−1° to 33°1°)	31°−1°	0%	1 mph2 km/h from NE, gusts 4 mph6 km/h	84%	37%	0
Sun 12a	Clear	30°−1° (likely 29°−2° to 33°1°)	30°−1°	0%	1 mph2 km/h from NE, gusts 5 mph9 km/h	86%	19%	0
Sun 1a	Partly cloudy	30°−1° (likely 29°−2° to 33°1°)	30°−1°	0%	1 mph2 km/h from NE, gusts 6 mph10 km/h	87%	31%	0
Sun 2a	Fog	28°−2° (likely 28°−2° to 33°1°)	28°−2°	0%	1 mph2 km/h from NNE, gusts 6 mph10 km/h	91%	40%	0
Sun 3a	Fog	27°−3° (likely 27°−3° to 32°0°)	27°−3°	0%	1 mph2 km/h from N, gusts 6 mph9 km/h	92%	44%	0
Sun 4a	Fog	27°−3° (likely 27°−3° to 33°1°)	27°−3°	0%	1 mph2 km/h from NNW, gusts 7 mph11 km/h	92%	42%	0
Sun 5a	Fog	26°−3° (likely 26°−3° to 33°1°)	26°−3°	0%	1 mph2 km/h from NW, gusts 6 mph10 km/h	93%	36%	0
Sun 6a	Clear	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	1 mph2 km/h from WNW, gusts 5 mph8 km/h	93%	26%	0
Sun 7a	Clear	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	93%	29%	0
Sun 8a	Fog	24°−4° (likely 24°−4° to 32°0°)	24°−4°	0%	0 mph0 km/h, gusts 5 mph8 km/h	93%	36%	0
Sun 9a	Fog	26°−3° (likely 26°−3° to 32°0°)	26°−3°	0%	1 mph2 km/h from WNW, gusts 5 mph8 km/h	93%	62%	0
Sun 10a	Cloudy	30°−1° (likely 29°−2° to 34°1°)	30°−1°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	84%	64%	1
Sun 11a	Cloudy	33°1° (likely 31°−1° to 34°1°)	33°1°	0%	1 mph2 km/h from NW, gusts 4 mph6 km/h	76%	77%	2
Sun 12p	Cloudy	35°2° (likely 32°0° to 35°2°)	35°2°	0%	1 mph2 km/h from N, gusts 4 mph6 km/h	70%	84%	3
Sun 1p	Cloudy	36°2° (likely 34°1° to 37°3°)	36°2°	0%	1 mph2 km/h from NE, gusts 4 mph6 km/h	67%	86%	4
Sun 2p	Partly sunny	37°3° (likely 35°2° to 38°3°)	37°3°	0%	1 mph2 km/h from NE, gusts 5 mph8 km/h	65%	82%	4
Sun 3p	Cloudy	38°3° (likely 36°2° to 38°3°)	38°3°	0%	1 mph2 km/h from ENE, gusts 6 mph10 km/h	63%	80%	3
Sun 4p	Cloudy	39°4° (likely 37°3° to 39°4°)	39°4°	0%	1 mph2 km/h from E, gusts 8 mph13 km/h	63%	81%	2
Sun 5p	Cloudy	39°4° (likely 37°3° to 39°4°)	39°4°	0%	1 mph2 km/h from ENE, gusts 8 mph13 km/h	63%	83%	1
Sun 6p	Cloudy	37°3° (likely 35°2° to 38°3°)	37°3°	0%	0 mph0 km/h, gusts 8 mph13 km/h	67%	83%	0
Sun 7p	Cloudy	35°2° (likely 33°1° to 37°3°)	35°2°	0%	0 mph0 km/h, gusts 5 mph8 km/h	72%	83%	0
Sun 8p	Cloudy	33°1° (likely 32°0° to 36°2°)	33°1°	0%	0 mph0 km/h, gusts 8 mph13 km/h	81%	83%	0
Sun 9p	Cloudy	30°−1° (likely 30°−1° to 35°2°)	30°−1°	0%	0 mph0 km/h, gusts 7 mph12 km/h	84%	83%	0
Sun 10p	Cloudy	29°−2° (likely 29°−2° to 34°1°)	29°−2°	0%	0 mph0 km/h, gusts 6 mph10 km/h	89%	79%	0
Sun 11p	Cloudy	28°−2° (likely 28°−2° to 33°1°)	28°−2°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	89%	0
Mon 12a	Cloudy	27°−3° (likely 27°−3° to 32°0°)	27°−3°	0%	0 mph0 km/h, gusts 4 mph7 km/h	91%	89%	0
Mon 1a	Cloudy	27°−3° (likely 27°−3° to 32°0°)	27°−3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	90%	84%	0
Mon 2a	Cloudy	26°−3° (likely 26°−3° to 32°0°)	26°−3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	93%	83%	0
Mon 3a	Cloudy	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	0 mph0 km/h, gusts 1 mph2 km/h	93%	83%	0
Mon 4a	Cloudy	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	91%	87%	0
Mon 5a	Cloudy	24°−4° (likely 24°−4° to 32°0°)	24°−4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	91%	91%	0
Mon 6a	Cloudy	23°−5° (likely 23°−5° to 32°0°)	23°−5°	0%	0 mph0 km/h, gusts 2 mph4 km/h	91%	95%	0
Mon 7a	Cloudy	24°−4° (likely 24°−4° to 32°0°)	24°−4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	90%	96%	0
Mon 8a	Cloudy	25°−4° (likely 25°−4° to 32°0°)	25°−4°	0%	0 mph0 km/h, gusts 2 mph2 km/h	90%	95%	0
Mon 9a	Cloudy	26°−3° (likely 26°−3° to 32°0°)	26°−3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	89%	94%	0
Mon 10a	Cloudy	30°−1° (likely 28°−2° to 34°1°)	30°−1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	83%	91%	1
Mon 11a	Cloudy	34°1° (likely 30°−1° to 36°2°)	34°1°	0%	0 mph0 km/h, gusts 5 mph8 km/h	75%	85%	2
Mon 12p	Partly sunny	38°3° (likely 33°1° to 39°4°)	38°3°	0%	0 mph0 km/h, gusts 5 mph7 km/h	68%	69%	3
Mon 1p	Partly sunny	40°4° (likely 37°3° to 42°6°)	40°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	64%	80%	4
Mon 2p	Partly sunny	41°5° (likely 40°4° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 7 mph11 km/h	61%	81%	4
Mon 3p	Cloudy	42°6° (likely 41°5° to 44°7°)	40°4°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	61%	81%	3
Mon 4p	Partly sunny	42°6° (likely 42°6° to 45°7°)	40°4°	0%	3 mph5 km/h from E, gusts 8 mph12 km/h	62%	51%	2
Mon 5p	Partly sunny	41°5° (likely 41°5° to 44°7°)	39°4°	0%	3 mph5 km/h from E, gusts 6 mph10 km/h	64%	43%	1
Mon 6p	Cloudy	40°4° (likely 38°3° to 42°6°)	40°4°	10%	0 mph0 km/h, gusts 6 mph9 km/h	68%	70%	0
Mon 7p	Partly cloudy	38°3° (likely 35°2° to 40°4°)	38°3°	10%	0 mph0 km/h, gusts 4 mph6 km/h	73%	93%	0
Mon 8p	Partly cloudy	37°3° (likely 33°1° to 38°3°)	37°3°	10%	0 mph0 km/h, gusts 3 mph5 km/h	78%	77%	0

Days ahead

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

Today, Oct 24. Cloudy. High 45°7°, low 24°−4°. Typical 53°12° / 30°−1°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Partly cloudy, 31°−1°
  Dry
2. Overnight
  midnight–6 AM
  Fog, 26°−3°
  Dry
Official NWS forecast
Tonight: Patchy fog after 2am. Partly cloudy, with a low around 24. North northeast wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
44°7°–46°8°
Low, likely
23°−5°–29°−2°
Typical high / low
53°12° / 30°−1°
Wind
11 mph18 km/h, gusts 21 mph33 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 39°4°, low 22°−6°. Typical 52°11° / 29°−2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Fog, 24°−4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 39°4°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 33°1°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 24°−4°
  Dry
Official NWS forecast
Day: Areas of fog before 10am. Partly sunny, with a high near 39. North wind around 1 mph.
Night: Mostly cloudy, with a low around 22. Wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
38°3°–39°4°
Low, likely
22°−6°–32°0°
Typical high / low
52°11° / 29°−2°
Wind
5 mph8 km/h, gusts 12 mph19 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 42°6°, low 29°−2°. Typical 52°11° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 25°−4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 42°6°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 37°3°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 32°0°
  30% chance · 0.02 in0.5 mm
Official NWS forecast
Day: Partly sunny, with a high near 42. East wind 0 to 3 mph.
Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 29. Southwest wind around 2 mph. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
41°5°–44°7°
Low, likely
26°−3°–31°−1°
Typical high / low
52°11° / 29°−2°
Wind
7 mph11 km/h
UV peak
4
Tuesday, Oct 27. Rain. High 49°9°, low 32°0°. Typical 52°11° / 29°−2°. Rain 0.09 in2.3 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 36°2°
  40% chance · 0.05 in1.2 mm
2. Afternoon
  noon–6 PM
  Drizzle, 49°10°
  40% chance · 0.02 in0.4 mm
3. Evening
  6 PM–midnight
  Cloudy, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Partly 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 49. Southwest wind 2 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.
Night: Mostly cloudy, with a low around 32. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
47°8°–52°11°
Low, likely
27°−3°–35°2°
Typical high / low
52°11° / 29°−2°
Wind
26 mph42 km/h, gusts 42 mph68 km/h
UV peak
2
Wednesday, Oct 28. Mostly cloudy. High 49°9°, low 27°−3°. Typical 51°11° / 28°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 51°11°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 31°−1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 49. West southwest wind around 7 mph.
Night: Mostly cloudy, with a low around 27.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
49°9°–53°12°
Low, likely
27°−3°–39°4°
Typical high / low
51°11° / 28°−2°
Wind
19 mph31 km/h, gusts 30 mph48 km/h
UV peak
3
Thursday, Oct 29. Snow. High 41°5°, low 26°−3°. Typical 51°11° / 28°−2°. Snow 0.03 in0.8 mm, 10% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 29°−1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 36°2°
  Dry
3. Evening
  6 PM–midnight
  Snow, 33°0°
  30% chance · 0.1 in0.3 cm
4. Overnight
  midnight–6 AM
  Snow, 29°−2°
  40% chance · 0.2 in0.5 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 before 9pm, then a chance of rain and snow. Mostly cloudy, with a low around 26.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
37°3°–41°5°
Low, likely
24°−4°–31°−1°
Typical high / low
51°11° / 28°−2°
Wind
11 mph17 km/h, gusts 16 mph26 km/h
UV peak
1
Friday, Oct 30. Snow. High 42°6°, low 26°−3°. Typical 50°10° / 28°−2°. Snow 0–1 in0–3 cm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 28°−2°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 40°4°
  20% chance
3. Evening
  6 PM–midnight
  Partly cloudy, 36°2°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 29°−1°
  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. Partly sunny, with a high near 42. Little or no snow accumulation expected.
Night: A chance of snow before midnight. Mostly cloudy, with a low around 26. New snow accumulation of less than half an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
34°1°–43°6°
Low, likely
23°−5°–31°−1°
Typical high / low
50°10° / 28°−2°
Wind
11 mph17 km/h, gusts 17 mph27 km/h
UV peak
3
Saturday, Oct 31. Mostly cloudy. High 46°8°, low 29°−2°. Typical 50°10° / 28°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 29°−2°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 42°6°
  Dry
3. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 46.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
40°4°–54°12°
Low, likely
12°−11°–37°3°
Typical high / low
50°10° / 28°−2°
Wind
19 mph31 km/h, gusts 31 mph50 km/h
UV peak
3
Sunday, Nov 1. Mostly sunny. High 47°8°, low 33°1°. Typical 49°9° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 47°8°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Partly 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
40°4°–53°12°
Low, likely
30°−1°–38°3°
Typical high / low
49°9° / 27°−3°
Wind
23 mph37 km/h, gusts 39 mph62 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 49°9°, low 35°2°. Typical 49°9° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 41°5°
  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
43°6°–55°13°
Low, likely
30°−1°–39°4°
Typical high / low
49°9° / 27°−3°
Wind
34 mph55 km/h, gusts 63 mph101 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 45°, low 24°.
Tomorrow
Dry, high 39°, low 22°, cooling off.
Monday
Dry, high 42°, low 29°, warming up.
Rest of week
Highs 41–49°; 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

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Missouri River near Ulm

6.2 mi

Below flood stage

Level: 3.3 ft
Flow: 3,780 cfs

Reading from Sat 7:30 PM · NWS gauge page

Sun River near Vaughn

10 mi

Below flood stage

Level: 2.5 ft
Flow: 615 cfs

Reading from Sat 7 PM · NWS gauge page

Muddy Creek at Vaughn

12 mi

Below flood stage

Level: 3.3 ft
Flow: 74 cfs

Reading from Sat 7:30 PM · NWS gauge page

Missouri River near Great Falls

13 mi

Level: 3.0 ft
Flow: 4,580 cfs

Reading from Sat 7:45 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: 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 62% less heating than a typical week.

This week 65Typical 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 25°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 8°4° colder than typical.

Last 7 days vs normal

On average 8°4° warmer than normal (daily mean temperature).

+10°+6°MonOct 19
+3°+1°TueOct 20
+11°+6°WedOct 21
+14°+8°ThuOct 22
±0°FriOct 23
—SatOct 24
—SunOct 25

Great Falls weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 23 min; Losing 3 min 12 s a day; shortest Dec 21, 1 h 57 min less
Golden hour: 5:37–6:40 PM; Morning 7:37–8:40 AM
Blue hour: 6:40–6:52 PM; Morning 7:25–7:37 AM; first light 7:25 AM

Stars tonight? Poor

Clouds most of the night (about 37% cover).

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:11 AM · rises 5:21 PM
Full moon: Oct 25
New moon: Nov 9

Looking southeast from Great Falls. The highest point on the skyline is about 9,100 ft, 49 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Great Falls, MT weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Missouri River near Ulm

Sun River near Vaughn

Muddy Creek at Vaughn

Missouri River near Great Falls

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? Poor

Moon