Weather forecast for 10 daysRiverside, MT

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 59°F
  • 23°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 10mphS 183°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:43 am MDT
  • Sunset: 6:34 pm MDT
  • ▼
Tomorrow, partly cloudy skies will persist, making for a mix of sun and clouds.
Day and night temperatures will contrast sharply, from a maximum of a moderate 59°F to a minimum of a subzero 23°F.
This October day will feature warmer weather, consistent with September's average of 61.9°F.
Sunrise will be at 7:43 am and sunset at 6:34 pm; tomorrow's daylight will last for 10h and 51min.

10-day overview

Daily temperatures

Warmest day: Monday 61°C.
Coldest day: Saturday 24.10. 41°C.

Chance of precipitation

Highest chance: Friday 76%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 23°F
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 14mphS 185°
  • Humidity: 68%
  • UV index: 0
  • Sunrise: 7:42 am MDT
  • Sunset: 6:36 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 59°F
  • 23°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 10mphS 183°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:43 am MDT
  • Sunset: 6:34 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 61°F
  • 27°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 11mphS 186°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:45 am MDT
  • Sunset: 6:33 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 59°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 8mphS 184°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:46 am MDT
  • Sunset: 6:31 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 59°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 9mphS 183°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 7:47 am MDT
  • Sunset: 6:29 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 57°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.12"
  • Wind: 9mphS 179°
  • Humidity: 76%
  • UV index: 3
  • Sunrise: 7:49 am MDT
  • Sunset: 6:28 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 45°F
  • 25°F
Rain
Rain
  • Precip. probability: 76%
  • Precipitation: 0.47"
  • Wind: 9mphSW 217°
  • Humidity: 93%
  • UV index: 1
  • Sunrise: 7:50 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 41°F
  • 25°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 9mphSW 215°
  • Humidity: 83%
  • UV index: 2
  • Sunrise: 7:51 am MDT
  • Sunset: 6:25 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 48°F
  • 25°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 7mphS 191°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 7:53 am MDT
  • Sunset: 6:23 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 46°F
  • 25°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 7mphS 187°
  • Humidity: 74%
  • UV index: 3
  • Sunrise: 7:54 am MDT
  • Sunset: 6:22 pm MDT
  • ▼
During the ten-day period, primarily cloud-filled and occasionally clear and showery weather is forecasted.
Rain is anticipated on Thursday and Friday.
Temperature variation will be noticeable over the next several days. Highs will range from 41°F to 60.8°F, while the forecast minimum temperature falls between 23°F and 33.8°F.
The warmest day will be Monday, with a maximum of 60.8°F; the lowest daytime temperature of the period will be reached on next Saturday, peaking at 41°F.
Updated: Oct 17, 2026 @ 22:48:36 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, clouds will come and go, but expect bright periods in between.

Tomorrow, the highest temperature in Riverside will be 59°F, while the lowest temperature will be 23°F.
Tomorrow, the highest temperature will be uncommonly higher than the average maximum of 44.2°F in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Riverside, sunrise will be at 7:43 am and sunset at 6:34 pm (MDT).

Tomorrow, the daylight will last for 10h and 51min.