Great Falls 7-day weather forecast

Stacker created the forecast for Great Falls, Montana using data from OpenWeather. This week's high is 78 °F on Wednesday, while the low is 40 °F on Sunday. There is expected to be 1 sunny day and rain on 4 days this week.

There are currently no weather alerts.

Monday, September 7

Andrew Lever // Shutterstock

1 / 6

Tuesday, September 8

- High of 61 °F, low of 51 °F (45% humidity)
- Overcast with a 0% chance of rain
- Moderate risk of harm from sun exposure (2 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 6:53 AM, sunset at 7:52 PM

Piyawat Nandeenopparit // Shutterstock

2 / 6

Wednesday, September 9

- High of 78 °F, low of 48 °F (23% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (5 UV index)
- Fresh breeze (21 mph wind)
- Sunrise at 6:54 AM, sunset at 7:50 PM

Ahmet Naim // Shutterstock

3 / 6

Thursday, September 10

- High of 78 °F, low of 58 °F (23% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Fresh breeze (22 mph wind)
- Sunrise at 6:56 AM, sunset at 7:48 PM
- New moon

Jaromir Chalabala // Shutterstock

4 / 6

Friday, September 11

- High of 68 °F, low of 50 °F (49% humidity)
- Partly cloudy with a 100% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:57 AM, sunset at 7:46 PM

LeManna // Shutterstock

5 / 6

Saturday, September 12

- High of 59 °F, low of 45 °F (60% humidity)
- Overcast with a 100% chance of rain (2 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Fresh breeze (20 mph wind)
- Sunrise at 6:58 AM, sunset at 7:44 PM

Dmitry Naumov // Shutterstock

6 / 6

Sunday, September 13

- High of 44 °F, low of 40 °F (94% humidity)
- Overcast with a 100% chance of rain (18 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 7:00 AM, sunset at 7:42 PM