Weather forecast for 10 daysMontana, USA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 70°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 10mphSSW 193°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:48 am MDT
  • Sunset: 6:37 pm MDT
  • ▼
Today, clouds and sunshine will alternate throughout the day.
Temperature is predicted to hit a high of a pleasant 69.8°F during the day, dipping to a low of a cold 39.2°F at night.
Today, the temperature will be higher and more consistent with September's typical high of 68.2°F than with October's 51.3°F.
Sunrise will be at 7:48 am and sunset at 6:37 pm; the daylight will last for 10h and 49min.

Sunday Oct 18, 2026

  • 63°F
  • 36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphN 356°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:50 am MDT
  • Sunset: 6:36 pm MDT
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Tomorrow, in Helena, a crisp, sunny atmosphere is also likely.
Daytime will experience a high of a comfortable 62.6°F, significantly differing from the predicted night low of an icy 35.6°F.
The predicted high will feel warmer, consistent with September's climate average of 68.2°F.
Sunrise will be at 7:50 am and sunset at 6:36 pm; tomorrow's daylight will last for 10h and 46min.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 70°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 10mphSSW 193°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:48 am MDT
  • Sunset: 6:37 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 63°F
  • 36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphN 356°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:50 am MDT
  • Sunset: 6:36 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphSE 130°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:51 am MDT
  • Sunset: 6:34 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 63°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 6mphNW 326°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:53 am MDT
  • Sunset: 6:32 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphS 187°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 7:54 am MDT
  • Sunset: 6:30 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0.04"
  • Wind: 6mphSSW 204°
  • Humidity: 63%
  • UV index: 3
  • Sunrise: 7:55 am MDT
  • Sunset: 6:29 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 54°F
  • 32°F
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 0.16"
  • Wind: 11mphWNW 284°
  • Humidity: 74%
  • UV index: 2
  • Sunrise: 7:57 am MDT
  • Sunset: 6:27 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 48°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0.16"
  • Wind: 6mphWNW 303°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 7:58 am MDT
  • Sunset: 6:25 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 43°F
  • 28°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 8mphNNW 330°
  • Humidity: 74%
  • UV index: 2
  • Sunrise: 8:00 am MDT
  • Sunset: 6:24 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 41°F
  • 30°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 7mphWNW 282°
  • Humidity: 76%
  • UV index: 2
  • Sunrise: 8:01 am MDT
  • Sunset: 6:22 pm MDT
  • ▼
Models point to a combination of cloudy, clear and showery weather is predicted.
With light precipitation of 0.16", rainfall is forecasted for Friday and next Saturday.
Temperature variation will be noticeable in the next ten days. Maximum temperatures are forecasted between 41°F and 69.8°F, while the variation in nighttime lows will be also notably wide, as the minimum temperature is expected to range between 28.4°F and 42.8°F.
With a high of 69.8°F, today is the warmest day; with the highest temperature of 41°F, next Monday will be the coldest day.
Updated: Oct 17, 2026 @ 12:45:25 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, intermittent cloud cover is expected, allowing for some sunshine.

Today, the highest temperature will be 69.8°F, while the lowest temperature will be 39.2°F.
Today, the maximum temperature will be significantly higher than the average highest temperature of 51.3°F in October. The lowest temperature will be a couple of degrees higher than the average low of 32.7°F.

On Saturday, in Helena, sunrise will be at 7:48 am and sunset at 6:37 pm (MDT).

Today, the daylight will last for 10h and 49min.

On Sunday, mainly sunny conditions will dominate the day.

Tomorrow, the maximum temperature will be 62.6°F, while the minimum temperature will be 35.6°F.
The highest temperature will be notably higher than the average maximum of 51.3°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Helena, sunrise will be at 7:50 am and sunset at 6:36 pm (MDT).

In Helena, tomorrow, there will be 10h and 46min of daylight.