Weather forecast for 10 daysGrass Range, MT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 59°F
- 39°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphE 101°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:38 am MDT
- Sunset: 6:22 pm MDT
- details ▼
Tomorrow, sunny moments will alternate with patchy cloud cover.
Anticipated temperature values will span from a mild 59°F down to an icy 39.2°F.
Tomorrow, the expected temperature will be moderately higher than the standard October high of 52.2°F.
Sunrise will be at 7:38 am and sunset at 6:22 pm; tomorrow's daylight will last for 10h and 44min.
Anticipated temperature values will span from a mild 59°F down to an icy 39.2°F.
Tomorrow, the expected temperature will be moderately higher than the standard October high of 52.2°F.
Sunrise will be at 7:38 am and sunset at 6:22 pm; tomorrow's daylight will last for 10h and 44min.
10-day overview
Daily temperatures
Warmest day: Thursday 73°C.
Coldest period: Saturday - Monday 48°C.
Coldest period: Saturday - Monday 48°C.
Chance of precipitation
Highest chance: Friday 37%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 43°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphW 271°
- Humidity: 40%
- UV index: 0
- Sunrise: 7:36 am MDT
- Sunset: 6:24 pm MDT
- details ▼
- Sunday
- Oct 18, 2026
- 59°F
- 39°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphE 101°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:38 am MDT
- Sunset: 6:22 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 45°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 9mphSSW 194°
- Humidity: 45%
- UV index: 3
- Sunrise: 7:39 am MDT
- Sunset: 6:20 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 64°F
- 39°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphNW 316°
- Humidity: 46%
- UV index: 2
- Sunrise: 7:40 am MDT
- Sunset: 6:18 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 48°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 14mphS 182°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:42 am MDT
- Sunset: 6:17 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 73°F
- 48°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 9mphSSW 207°
- Humidity: 46%
- UV index: 3
- Sunrise: 7:43 am MDT
- Sunset: 6:15 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 59°F
- 37°F
PM Showers
- Precip. probability: 37%
- Precipitation: 0.08"
- Wind: 16mphWNW 291°
- Humidity: 65%
- UV index: 1
- Sunrise: 7:45 am MDT
- Sunset: 6:13 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 48°F
- 32°F
Partly Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 16mphWNW 294°
- Humidity: 60%
- UV index: 2
- Sunrise: 7:46 am MDT
- Sunset: 6:12 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 48°F
- 32°F
Partly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 12mphSW 226°
- Humidity: 69%
- UV index: 2
- Sunrise: 7:48 am MDT
- Sunset: 6:10 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 48°F
- 34°F
Mostly Sunny
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 9mphNW 304°
- Humidity: 62%
- UV index: 2
- Sunrise: 7:49 am MDT
- Sunset: 6:08 pm MDT
- details ▼
Looking ahead, conditions suggest a period of cloudy, mostly clear and damp weather is forecasted.
With a 37% probability, rainfall is anticipated only on Friday. Anticipated precipitation will be minimal at 0.08".
Significant changes in temperature are expected in the coming days. Forecast highs will fluctuate between 48.2°F and 73.4°F, while the lowest nightly temperature differences will be also quite pronounced, as the minimum temperature is expected to range between 32°F and 48.2°F.
The warmest day will be Thursday, with a maximum of 73.4°F; the coldest days will be next Saturday through next Monday, with a maximum of 48.2°F.
With a 37% probability, rainfall is anticipated only on Friday. Anticipated precipitation will be minimal at 0.08".
Significant changes in temperature are expected in the coming days. Forecast highs will fluctuate between 48.2°F and 73.4°F, while the lowest nightly temperature differences will be also quite pronounced, as the minimum temperature is expected to range between 32°F and 48.2°F.
The warmest day will be Thursday, with a maximum of 73.4°F; the coldest days will be next Saturday through next Monday, with a maximum of 48.2°F.
Updated: Oct 18, 2026 @ 00:09:27 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
Tomorrow, in Grass Range, occasional clouds will pass by, but expect bright spells.
Tomorrow, the highest temperature will be 59°F, while the lowest temperature will be 39.2°F.
The maximum temperature will be slightly warmer than the average highest temperature of 52.2°F in October. Tomorrow, the lowest temperature will be also a few degrees higher than the average low temperature.
The maximum temperature will be slightly warmer than the average highest temperature of 52.2°F in October. Tomorrow, the lowest temperature will be also a few degrees higher than the average low temperature.
On Sunday, in Grass Range, sunrise will be at 7:38 am and sunset at 6:22 pm (MDT).
Tomorrow in Grass Range, the daylight will last for 10h and 44min.
