Weather Great Falls week

Weather forecast for Great Falls for this and next week.

Monday, Sep 8

82 / 55°F

0.00 in

9 mph

61 °F	59 °F	5 am
61 °F	57 °F	6 am
79 °F	77 °F	12 pm
82 °F	79 °F	6 pm

sunrise 6:53 am
sunset 7:50 pm

HOURLY

During the day partly cloudy, in the afternoon initially partly cloudy, later cloudy. The highest temperature 82 °F. At night clear. The lowest temperature 55 °F.

Interactive map weather Montana, USA

GPS: 47.5002; -111.3008

altitude: 3330 ft
local time:

PLACES IN THE AREA

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Weather forecast Great Falls, Montana, USA extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Monday 09/08/2025
12 AM 2 AM	partly cloudy	64 °F 63 °F	0.0 in	10 fps 7 mph southwest	29.9 in	53 %	46 °F	33 %	0%	0%	0%	33%
1 AM 3 AM	clear	64 °F 63 °F	0.0 in	12 fps 8 mph southwest	29.9 in	57 %	46 °F	0 %	0%	0%	0%	0%
2 AM 4 AM	partly cloudy	63 °F 61 °F	0.0 in	11 fps 8 mph southwest	29.9 in	57 %	46 °F	31 %	0%	0%	7%	26%
3 AM 5 AM	cloudy	63 °F 61 °F	0.0 in	11 fps 8 mph southwest	29.9 in	55 %	46 °F	50 %	0%	0%	1%	50%
4 AM 6 AM	partly cloudy	61 °F 59 °F	0.0 in	12 fps 8 mph southwest	29.9 in	56 %	45 °F	32 %	0%	0%	0%	32%
5 AM 7 AM	cloudy	61 °F 59 °F	0.0 in	12 fps 9 mph southwest	29.9 in	59 %	45 °F	64 %	0%	0%	3%	63%
6 AM 8 AM	clear	61 °F 59 °F	0.0 in	12 fps 8 mph southwest	29.9 in	60 %	45 °F	43 %	0%	0%	0%	42%
12 PM 2 PM	partly cloudy	79 °F 77 °F	0.0 in	13 fps 9 mph west-southwest	29.9 in	31 %	45 °F	21 %	0%	0%	3%	18%
6 PM 8 PM	cloudy	82 °F 79 °F	0.0 in	7 fps 5 mph west	29.8 in	22 %	39 °F	50 %	0%	0%	21%	37%
Tuesday 09/09/2025
12 AM 2 AM	clear	64 °F 63 °F	0.0 in	6 fps 4 mph north	29.8 in	51 %	45 °F	9 %	0%	0%	0%	9%
6 AM 8 AM	cloudy	55 °F 54 °F	0.0 in	7 fps 4 mph west-southwest	29.9 in	67 %	45 °F	65 %	0%	0%	0%	65%
12 PM 2 PM	partly cloudy	77 °F 75 °F	0.01 in	3 fps 2 mph northwest	29.8 in	33 %	45 °F	29 %	0%	0%	0%	29%
6 PM 8 PM	overcast	79 °F 77 °F	0.00 in	2 fps 2 mph east-northeast	29.7 in	28 %	43 °F	99 %	0%	0%	1%	99%

Great Falls, Montana, USA - information

State: Montana, USA

GPS coordinates: 47.5002; -111.3008

Time zone: America / Denver time difference in hours with time in NY is -8 hours

Population: 59 638
Altitude: 3330 ft
The administrative part:

Montana, Helena
Cascade County, Cascade

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Weather Great Falls, Montana, USA. Weather forecast Great Falls.

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Data source

Weather forecast for Great Falls is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Long-term statistical averages

	average	min.	max.	precipit… days
January	21 °F	12 °F	31 °F	6
February	27 °F	17 °F	38 °F	4
March	33 °F	23 °F	44 °F	6
April	44 °F	32 °F	55 °F	6
May	53 °F	41 °F	65 °F	8
June	62 °F	49 °F	75 °F	7
July	68 °F	53 °F	83 °F	5
August	67 °F	52 °F	82 °F	5
September	57 °F	44 °F	70 °F	5
October	47 °F	36 °F	59 °F	3
November	34 °F	24 °F	44 °F	4
December	24 °F	15 °F	33 °F	5

Statistical averages in charts Great Falls

Astronomical information Great Falls

data are always in the local time

Sun and light

Sept. 8, 2025

Sunrise:	Sunset:
6:53 am	7:50 pm
Noon:	Length of day:
1:22 pm	12:57
Start of civil twilight*:	End of civil twilight*:
6:21 am	8:22 pm
Start of nautical twilight*:	End of nautical twilight*:
5:44 am	8:59 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:05 am	9:38 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/07/2025 7:55 pm	09/08/2025 8 am
Next new moon:	Next full moon:
09/21/2025	10/06/2025