Weather forecast for 10 daysArlee, MT

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 63°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphNNW 348°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:59 am MDT
  • Sunset: 6:43 pm MDT
  • ▼
Today, on Sunday, October 18, sunshine is expected with little to no cloud cover.
Temperatures are predicted to peak at a comfortable 62.6°F and drop to a minimum of an icy 39.2°F.
Today, the temperature forecast of 62.6°F will better match September's climate average than that of October.
Sunrise was at 7:59 am and sunset will be at 6:43 pm; the daylight will last for 10h and 44min.

10-day overview

Daily temperatures

Maximum temperature: 66°C.
Coldest day: Tuesday 27.10. 43°C.

Chance of precipitation

Highest chance: Friday 55%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 63°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphNNW 348°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:59 am MDT
  • Sunset: 6:43 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphSSE 158°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 8:00 am MDT
  • Sunset: 6:41 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 64°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphN 2°
  • Humidity: 62%
  • UV index: 2
  • Sunrise: 8:02 am MDT
  • Sunset: 6:39 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphSSE 158°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 8:03 am MDT
  • Sunset: 6:38 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 64°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.2"
  • Wind: 4mphSSW 199°
  • Humidity: 68%
  • UV index: 2
  • Sunrise: 8:05 am MDT
  • Sunset: 6:36 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 48°F
  • 32°F
Showers
Showers
  • Precip. probability: 55%
  • Precipitation: 0.12"
  • Wind: 7mphW 277°
  • Humidity: 88%
  • UV index: 2
  • Sunrise: 8:06 am MDT
  • Sunset: 6:34 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 50°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 5mphSSW 204°
  • Humidity: 73%
  • UV index: 2
  • Sunrise: 8:08 am MDT
  • Sunset: 6:32 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 52°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.08"
  • Wind: 6mphSE 131°
  • Humidity: 75%
  • UV index: 2
  • Sunrise: 8:09 am MDT
  • Sunset: 6:31 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 46°F
  • 28°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 5mphN 9°
  • Humidity: 81%
  • UV index: 2
  • Sunrise: 8:11 am MDT
  • Sunset: 6:29 pm MDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 43°F
  • 28°F
Rain / Snow
Rain / Snow
  • Precip. probability: 34%
  • Precipitation: 0.24"
  • Wind: 6mphNNW 328°
  • Humidity: 86%
  • UV index: 2
  • Sunrise: 8:12 am MDT
  • Sunset: 6:27 pm MDT
  • ▼
The next ten days will bring unstable conditions, and a mix of cloudy, dry and sunny, rain-filled and snow-blanketed weather is predicted.
Rainfall is anticipated on Thursday, Friday and next Sunday.
With a 34% probability, snowfall is forecasted only for next Tuesday. Expected precipitation will be moderate at 0.24".
Expect a substantial fluctuation in daytime highs over the next several days. Maximum temperatures are forecasted between 42.8°F and 66.2°F, while the lowest nightly temperature differences will be also quite pronounced, as the minimum temperature is expected to range between 28.4°F and 42.8°F.
Monday and Wednesday, with the highest temperature of 66.2°F, will be the warmest days in Arlee; the lowest daytime temperature of the period will be reached on next Tuesday, peaking at 42.8°F.
Updated: Oct 18, 2026 @ 16:08:35 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, the outlook remains bright and sunny.

Today, the highest temperature will be 62.6°F, while the lowest temperature will be 39.2°F.
Today, the maximum temperature will be notably higher than the average highest temperature of 49.8°F in October. The lowest temperature today will be slightly warmer than the average low temperature.

On Sunday, in Arlee, sunrise was at 7:59 am and sunset will be at 6:43 pm (MDT).

Today, the daylight will last for 10h and 44min.