Weather forecast for 10 daysSun River, MT
Weather forecast for the weekend
Saturday Oct 17, 2026
- 73°F
- 39°F
Partly Cloudy / Wind
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 26mphSW 230°
- Humidity: 20%
- UV index: 3
- Sunrise: 7:48 am MDT
- Sunset: 6:35 pm MDT
- details ▼
On Saturday, October 17, moderate winds will accompany partly cloudy skies.
Temperatures will see a substantial oscillation, reaching a high of a warm 73.4°F and dropping to a low of a wintry 39.2°F.
The higher temperature of 73.4°F is more typical of September than October.
Sunrise was at 7:48 am and sunset will be at 6:35 pm; the daylight will last for 10h and 46min.
Temperatures will see a substantial oscillation, reaching a high of a warm 73.4°F and dropping to a low of a wintry 39.2°F.
The higher temperature of 73.4°F is more typical of September than October.
Sunrise was at 7:48 am and sunset will be at 6:35 pm; the daylight will last for 10h and 46min.
Sunday Oct 18, 2026
- 61°F
- 36°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 10mphE 87°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:50 am MDT
- Sunset: 6:33 pm MDT
- details ▼
On Sunday, in Sun River, a pleasant mix of sun and clouds will define the day.
The maximum temperature will be a breezy 60.8°F, while the minimum temperature will be a wintry 35.6°F.
The day’s highest temperature is anticipated to be relatively higher than the standard October average of 54.5°F.
Sunrise will be at 7:50 am and sunset at 6:33 pm; tomorrow's daylight will last for 10h and 43min.
The maximum temperature will be a breezy 60.8°F, while the minimum temperature will be a wintry 35.6°F.
The day’s highest temperature is anticipated to be relatively higher than the standard October average of 54.5°F.
Sunrise will be at 7:50 am and sunset at 6:33 pm; tomorrow's daylight will last for 10h and 43min.
10-day overview
Daily temperatures
Warmest day: today 73°C.
Coldest period: Sunday - Monday 41°C.
Coldest period: Sunday - Monday 41°C.
Chance of precipitation
Highest chance: Friday 45%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- 73°F
- 39°F
Partly Cloudy / Wind
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 26mphSW 230°
- Humidity: 20%
- UV index: 3
- Sunrise: 7:48 am MDT
- Sunset: 6:35 pm MDT
- details ▼
- Sunday
- Oct 18, 2026
- 61°F
- 36°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 10mphE 87°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:50 am MDT
- Sunset: 6:33 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 68°F
- 39°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 7mphSSW 196°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:51 am MDT
- Sunset: 6:31 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 59°F
- 37°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 8mphNW 324°
- Humidity: 58%
- UV index: 2
- Sunrise: 7:53 am MDT
- Sunset: 6:29 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 70°F
- 45°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 11mphSSW 206°
- Humidity: 54%
- UV index: 3
- Sunrise: 7:54 am MDT
- Sunset: 6:28 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 68°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0.04"
- Wind: 10mphSW 215°
- Humidity: 52%
- UV index: 2
- Sunrise: 7:56 am MDT
- Sunset: 6:26 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 50°F
- 36°F
Showers
- Precip. probability: 45%
- Precipitation: 0.16"
- Wind: 14mphW 275°
- Humidity: 72%
- UV index: 2
- Sunrise: 7:57 am MDT
- Sunset: 6:24 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 46°F
- 30°F
Partly Cloudy
- Precip. probability: 13%
- Precipitation: 0"
- Wind: 10mphSW 233°
- Humidity: 60%
- UV index: 2
- Sunrise: 7:59 am MDT
- Sunset: 6:22 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 41°F
- 30°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 11mphNNW 334°
- Humidity: 71%
- UV index: 2
- Sunrise: 8:00 am MDT
- Sunset: 6:21 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 41°F
- 32°F
Mostly Sunny
- Precip. probability: 13%
- Precipitation: 0"
- Wind: 9mphSW 236°
- Humidity: 70%
- UV index: 2
- Sunrise: 8:02 am MDT
- Sunset: 6:19 pm MDT
- details ▼
During the ten-day period, primarily overcast and occasionally mostly clear and rain-filled weather is predicted.
With a probability of 45%, rainfall is forecasted only for Friday. The precipitation will be light at 0.16".
Significant changes in temperature are expected in the upcoming period. The maximum temperature will vary between 41°F and 73.4°F, while the fluctuation in night temperatures will be also significant, as nighttime lows are forecast to fall between 30.2°F and 46.4°F.
Today is the warmest day, with a maximum temperature of 73.4°F; with a maximum temperature of 41°F, next Sunday and Monday will be the coldest days in Sun River.
With a probability of 45%, rainfall is forecasted only for Friday. The precipitation will be light at 0.16".
Significant changes in temperature are expected in the upcoming period. The maximum temperature will vary between 41°F and 73.4°F, while the fluctuation in night temperatures will be also significant, as nighttime lows are forecast to fall between 30.2°F and 46.4°F.
Today is the warmest day, with a maximum temperature of 73.4°F; with a maximum temperature of 41°F, next Sunday and Monday will be the coldest days in Sun River.
Updated: Oct 17, 2026 @ 19:39:42 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, in Sun River, wind-swept clouds will drift across the sky, making for a partly cloudy and breezy day.
Today, the maximum temperature will be 73.4°F, while the minimum temperature will be 39.2°F.
Today, the highest temperature will be notably higher than the average maximum of 54.5°F in October. The lowest temperature today will be in line with the average low temperature.
Today, the highest temperature will be notably higher than the average maximum of 54.5°F in October. The lowest temperature today will be in line with the average low temperature.
On Saturday, in Sun River, sunrise was at 7:48 am and sunset will be at 6:35 pm (MDT).
In Sun River, the length of the day today will be 10h and 46min.
On Sunday, partly cloudy skies will persist, making for a mix of sun and clouds.
Tomorrow, the highest temperature will be 60.8°F, while the lowest temperature will be 35.6°F.
The highest temperature will be a few degrees higher than the average maximum of 54.5°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.
The highest temperature will be a few degrees higher than the average maximum of 54.5°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.
On Sunday, in Sun River, sunrise will be at 7:50 am and sunset at 6:33 pm (MDT).
In Sun River, tomorrow, there will be 10h and 43min of daylight.





