Weather forecast for 10 daysGreat Falls, MT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 63°F
- 37°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 11mphENE 68°
- Humidity: 47%
- UV index: 3
- Sunrise: 7:48 am MDT
- Sunset: 6:31 pm MDT
- details ▼
Today, in Great Falls, sunlight and clouds will take turns dominating the sky.
The maximum temperature will be an enjoyable 62.6°F, while the minimum temperature will be an icy 37.4°F.
The highest temperature is anticipated to be slightly warmer than the average October peak of 54.5°F.
Sunrise will be at 7:48 am and sunset at 6:31 pm; the daylight will last for 10h and 43min.
The maximum temperature will be an enjoyable 62.6°F, while the minimum temperature will be an icy 37.4°F.
The highest temperature is anticipated to be slightly warmer than the average October peak of 54.5°F.
Sunrise will be at 7:48 am and sunset at 6:31 pm; the daylight will last for 10h and 43min.
10-day overview
Daily temperatures
Maximum temperature: 70°C.
Coldest day: Monday 26.10. 37°C.
Coldest day: Monday 26.10. 37°C.
Chance of precipitation
Highest chance: Friday 72%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 63°F
- 37°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 11mphENE 68°
- Humidity: 47%
- UV index: 3
- Sunrise: 7:48 am MDT
- Sunset: 6:31 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 70°F
- 39°F
Mostly Sunny
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 8mphSSW 196°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:50 am MDT
- Sunset: 6:29 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 59°F
- 39°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphWNW 295°
- Humidity: 60%
- UV index: 2
- Sunrise: 7:51 am MDT
- Sunset: 6:28 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 48°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 8mphSSW 211°
- Humidity: 56%
- UV index: 3
- Sunrise: 7:53 am MDT
- Sunset: 6:26 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 48°F
Partly Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 9mphSW 223°
- Humidity: 50%
- UV index: 2
- Sunrise: 7:54 am MDT
- Sunset: 6:24 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 52°F
- 36°F
Rain
- Precip. probability: 72%
- Precipitation: 0.08"
- Wind: 14mphW 278°
- Humidity: 75%
- UV index: 1
- Sunrise: 7:55 am MDT
- Sunset: 6:22 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 43°F
- 32°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0.2"
- Wind: 12mphWSW 240°
- Humidity: 67%
- UV index: 2
- Sunrise: 7:57 am MDT
- Sunset: 6:21 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 41°F
- 32°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 12mphNW 312°
- Humidity: 75%
- UV index: 2
- Sunrise: 7:58 am MDT
- Sunset: 6:19 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 37°F
- 30°F
Partly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 10mphW 270°
- Humidity: 73%
- UV index: 2
- Sunrise: 8:00 am MDT
- Sunset: 6:17 pm MDT
- details ▼
- Tuesday
- Oct 27, 2026
- 39°F
- 32°F
Partly Cloudy
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 11mphWSW 249°
- Humidity: 82%
- UV index: 2
- Sunrise: 8:01 am MDT
- Sunset: 6:16 pm MDT
- details ▼
Over the next ten days, a mix of primarily cloudy and occasionally sunny and rainy weather is predicted.
With a 72% probability, rainfall is expected only on Friday. Anticipated precipitation will be light at 0.2".
Significant changes in temperature are expected in the next ten days. The maximum temperature will vary between 37.4°F and 69.8°F, while the difference in minimum temperatures will be also substantial, as temperatures overnight will fluctuate from 30.2°F up to 48.2°F.
The warmest days in Great Falls will be Monday and Thursday, with a maximum of 69.8°F; next Monday will be the coldest day, with the highest temperature of 37.4°F.
With a 72% probability, rainfall is expected only on Friday. Anticipated precipitation will be light at 0.2".
Significant changes in temperature are expected in the next ten days. The maximum temperature will vary between 37.4°F and 69.8°F, while the difference in minimum temperatures will be also substantial, as temperatures overnight will fluctuate from 30.2°F up to 48.2°F.
The warmest days in Great Falls will be Monday and Thursday, with a maximum of 69.8°F; next Monday will be the coldest day, with the highest temperature of 37.4°F.
Updated: Oct 18, 2026 @ 08:01:55 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, a mix of clouds and blue sky is expected.
Today, the highest temperature will be 62.6°F, while the lowest temperature will be 37.4°F.
The maximum temperature will be a few degrees higher than the average highest temperature of 54.5°F in October. Today, the lowest temperature will be in line with the average low temperature.
The maximum temperature will be a few degrees higher than the average highest temperature of 54.5°F in October. Today, the lowest temperature will be in line with the average low temperature.
On Sunday, in Great Falls, sunrise will be at 7:48 am and sunset at 6:31 pm (MDT).
Today, the daylight will last for 10h and 43min.
