Great Falls 7-day weather forecast

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June 8, 2026
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Great Falls 7-day weather forecast

created the forecast for Great Falls, Montana using data from . This week's high is 100 掳F on Friday, while the low is 44 掳F on Tuesday. There are expected to be 5 sunny days and rain on 2 days this week.

NWS Great Falls MT has issued an air quality alert until Monday at 09:00 AM and a red flag warning until Monday at 03:00 AM.

Monday, August 3

- High of 65 掳F, low of 46 掳F (43% humidity)
- Overcast with a 74% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Fresh breeze (19 mph wind)
- Sunrise at 6:05 AM, sunset at 8:57 PM
1 / 6
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Tuesday, August 4

- High of 78 掳F, low of 44 掳F (18% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 6:06 AM, sunset at 8:55 PM
2 / 6
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Wednesday, August 5

- High of 89 掳F, low of 54 掳F (13% humidity)
- Fair with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 6:08 AM, sunset at 8:54 PM
- Last quarter moon
3 / 6
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Thursday, August 6

- High of 90 掳F, low of 61 掳F (17% humidity)
- Sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 6:09 AM, sunset at 8:52 PM
4 / 6
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Friday, August 7

- High of 100 掳F, low of 62 掳F (20% humidity)
- Mostly sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Fresh breeze (19 mph wind)
- Sunrise at 6:10 AM, sunset at 8:51 PM
5 / 6
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Saturday, August 8

- High of 84 掳F, low of 60 掳F (28% humidity)
- Sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 6:12 AM, sunset at 8:49 PM
6 / 6
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Sunday, August 9

- High of 86 掳F, low of 61 掳F (32% humidity)
- Overcast with a 100% chance of rain (1 mm of rain)
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 6:13 AM, sunset at 8:48 PM

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