Weather forecast for 10 daysPompeys Pillar, MT

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 66°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphNE 54°
  • Humidity: 42%
  • UV index: 3
  • Sunrise: 7:33 am MDT
  • Sunset: 6:20 pm MDT
  • ▼
On Sunday, in Pompeys Pillar, expect plenty of sunshine and only a few scattered clouds.
The temperature is anticipated to vary significantly from a high of an enjoyable 66.2°F to a low of a cold 33.8°F.
The highest temperature for today is anticipated to be relatively higher than the average October temperature of 58.1°F.
Sunrise was at 7:33 am and sunset will be at 6:20 pm; the daylight will last for 10h and 47min.

10-day overview

Daily temperatures

Warmest day: Thursday 72°C.
Coldest day: Tuesday 27.10. 46°C.

Chance of precipitation

Highest chance: Friday 64%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 66°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphNE 54°
  • Humidity: 42%
  • UV index: 3
  • Sunrise: 7:33 am MDT
  • Sunset: 6:20 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSSW 206°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:34 am MDT
  • Sunset: 6:19 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphNW 318°
  • Humidity: 49%
  • UV index: 3
  • Sunrise: 7:36 am MDT
  • Sunset: 6:17 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphSSE 163°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:37 am MDT
  • Sunset: 6:15 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 72°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphWSW 246°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:38 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 61°F
  • 37°F
Rain
Rain
  • Precip. probability: 64%
  • Precipitation: 0.31"
  • Wind: 17mphWNW 300°
  • Humidity: 69%
  • UV index: 2
  • Sunrise: 7:40 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 52°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 10mphW 280°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:41 am MDT
  • Sunset: 6:10 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 54°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 9mphENE 68°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 7:43 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 52°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 9mphN 6°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:44 am MDT
  • Sunset: 6:07 pm MDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 46°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 9mphNW 323°
  • Humidity: 75%
  • UV index: 2
  • Sunrise: 7:45 am MDT
  • Sunset: 6:05 pm MDT
  • ▼
Models point to a combination of sun-filled, cloud-filled and wet weather is forecasted.
With a 64% probability, rainfall is forecasted only for Friday. The precipitation will be light at 0.31".
Temperature differences will be noticeable in the next ten days. Highs will range from 46.4°F to 71.6°F, while the difference in minimum temperatures will be also substantial, as temperatures overnight will fluctuate from 30.2°F up to 46.4°F.
Expect the warmest day on Thursday, with temperatures peaking at 71.6°F; the coldest day will be next Tuesday, with a maximum of 46.4°F.
Updated: Oct 18, 2026 @ 14:54:40 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, open skies and radiant sunshine are expected.

Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 33.8°F.
Today, the highest temperature will be a couple of degrees higher than the average maximum temperature in October. The lowest temperature today will be also relatively lower than the average low temperature.

On Sunday, in Pompeys Pillar, sunrise was at 7:33 am and sunset will be at 6:20 pm (MDT).

In Pompeys Pillar, the length of the day today will be 10h and 47min.