Weather forecast for 10 daysChinook, MT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 61°F
- 36°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphESE 118°
- Humidity: 51%
- UV index: 3
- Sunrise: 7:42 am MDT
- Sunset: 6:21 pm MDT
- details ▼
On Sunday, October 18, expect brilliant sunshine under mostly clear skies.
Temperatures will oscillate between an enjoyable 60.8°F at their highest and a wintry 35.6°F at their lowest.
The predicted peak temperature will reflect the average October high of 59.2°F.
Sunrise will be at 7:42 am and sunset at 6:21 pm; the daylight will last for 10h and 40min.
Temperatures will oscillate between an enjoyable 60.8°F at their highest and a wintry 35.6°F at their lowest.
The predicted peak temperature will reflect the average October high of 59.2°F.
Sunrise will be at 7:42 am and sunset at 6:21 pm; the daylight will last for 10h and 40min.
10-day overview
Daily temperatures
Warmest day: Thursday 70°C.
Coldest period: Monday - Tuesday 43°C.
Coldest period: Monday - Tuesday 43°C.
Chance of precipitation
Highest chance: Friday 58%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 61°F
- 36°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphESE 118°
- Humidity: 51%
- UV index: 3
- Sunrise: 7:42 am MDT
- Sunset: 6:21 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 66°F
- 34°F
Mostly Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 11mphESE 105°
- Humidity: 51%
- UV index: 2
- Sunrise: 7:43 am MDT
- Sunset: 6:20 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 64°F
- 34°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 7mphNW 314°
- Humidity: 59%
- UV index: 2
- Sunrise: 7:45 am MDT
- Sunset: 6:18 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 39°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 12mphESE 123°
- Humidity: 57%
- UV index: 2
- Sunrise: 7:46 am MDT
- Sunset: 6:16 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 45°F
Mostly Sunny
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 6mphE 96°
- Humidity: 59%
- UV index: 2
- Sunrise: 7:48 am MDT
- Sunset: 6:14 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 54°F
- 34°F
Showers
- Precip. probability: 58%
- Precipitation: 0.16"
- Wind: 19mphWNW 290°
- Humidity: 72%
- UV index: 1
- Sunrise: 7:49 am MDT
- Sunset: 6:12 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 46°F
- 27°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 17mphW 278°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:51 am MDT
- Sunset: 6:10 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 45°F
- 28°F
Partly Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 14mphE 97°
- Humidity: 71%
- UV index: 2
- Sunrise: 7:52 am MDT
- Sunset: 6:09 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 43°F
- 25°F
Partly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 11mphE 91°
- Humidity: 79%
- UV index: 2
- Sunrise: 7:54 am MDT
- Sunset: 6:07 pm MDT
- details ▼
- Tuesday
- Oct 27, 2026
- 43°F
- 27°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 12mphW 273°
- Humidity: 85%
- UV index: 2
- Sunrise: 7:55 am MDT
- Sunset: 6:05 pm MDT
- details ▼
Over the next ten days, a mix of dull, dry and sunny and rainy weather is predicted.
With a probability of 58%, rainfall is expected only on Friday. Forecasted precipitation will be light at 0.16".
Noticeable swings in temperature are expected in the coming days. Forecast highs will fluctuate between 42.8°F and 69.8°F, while the lowest night temperatures will vary also significantly, as the overnight lows will vary from 24.8°F to 44.6°F.
Thursday will be the warmest day, with a maximum temperature of 69.8°F; with a maximum temperature of 42.8°F, next Monday and Tuesday will be the coldest days.
With a probability of 58%, rainfall is expected only on Friday. Forecasted precipitation will be light at 0.16".
Noticeable swings in temperature are expected in the coming days. Forecast highs will fluctuate between 42.8°F and 69.8°F, while the lowest night temperatures will vary also significantly, as the overnight lows will vary from 24.8°F to 44.6°F.
Thursday will be the warmest day, with a maximum temperature of 69.8°F; with a maximum temperature of 42.8°F, next Monday and Tuesday will be the coldest days.
Updated: Oct 18, 2026 @ 09:56:21 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
On Sunday, expect plenty of sunshine and only a few scattered clouds.
Today, the highest temperature will be 60.8°F, while the lowest temperature will be 35.6°F.
The maximum temperature will be in line with the average highest temperature of 59.2°F in October. The lowest temperature today will be moderately higher than the average low temperature.
The maximum temperature will be in line with the average highest temperature of 59.2°F in October. The lowest temperature today will be moderately higher than the average low temperature.
On Sunday, in Chinook, sunrise will be at 7:42 am and sunset at 6:21 pm (MDT).
In Chinook, today, there will be 10h and 40min of daylight.
