Weather forecast for 10 daysSumatra, MT

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 77°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphWSW 249°
  • Humidity: 21%
  • UV index: 3
  • Sunrise: 7:31 am MDT
  • Sunset: 6:19 pm MDT
  • ▼
Today, in Sumatra, the forecast calls for abundant sunshine.
The day's temperature range will span from a high of a moderately hot 77°F to a minimum of a cold 39.2°F.
The day's peak of 77°F reflects September's seasonal pattern more than October's.
Sunrise was at 7:31 am and sunset will be at 6:19 pm; the daylight will last for 10h and 49min.

Sunday Oct 18, 2026

  • 63°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 10mphNE 42°
  • Humidity: 45%
  • UV index: 3
  • Sunrise: 7:32 am MDT
  • Sunset: 6:18 pm MDT
  • ▼
Tomorrow, on Sunday, October 18, the sky will feature a blend of clouds and sunshine.
The highest temperature will be a breezy 62.6°F, while the lowest temperature will be a cold 37.4°F.
Tomorrow, the forecasted high temperature will be moderately higher than the average October peak of 57.2°F.
Sunrise will be at 7:32 am and sunset at 6:18 pm; tomorrow's daylight will last for 10h and 46min.

10-day overview

Daily temperatures

Warmest day: today 77°C.
Coldest day: Monday 26.10. 46°C.

Chance of precipitation

Highest chance: Friday 51%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 77°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphWSW 249°
  • Humidity: 21%
  • UV index: 3
  • Sunrise: 7:31 am MDT
  • Sunset: 6:19 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 63°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 10mphNE 42°
  • Humidity: 45%
  • UV index: 3
  • Sunrise: 7:32 am MDT
  • Sunset: 6:18 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 11mphSSE 150°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:33 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 64°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 12mphNW 309°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:35 am MDT
  • Sunset: 6:14 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 64°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 11mphSE 146°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:36 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 70°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 9mphSSW 204°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:38 am MDT
  • Sunset: 6:11 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 61°F
  • 37°F
PM Showers
PM Showers
  • Precip. probability: 51%
  • Precipitation: 0.16"
  • Wind: 16mphNW 306°
  • Humidity: 65%
  • UV index: 2
  • Sunrise: 7:39 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 50°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 16mphNW 313°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 7:40 am MDT
  • Sunset: 6:07 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 50°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 11mphNE 36°
  • Humidity: 70%
  • UV index: 2
  • Sunrise: 7:42 am MDT
  • Sunset: 6:06 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 46°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 11mphNNW 336°
  • Humidity: 66%
  • UV index: 2
  • Sunrise: 7:43 am MDT
  • Sunset: 6:04 pm MDT
  • ▼
Over the next ten days, a mix of dull, sunny and rainy weather is expected.
With a probability of 51%, rainfall is expected only on Friday. The precipitation will be light at 0.16".
Temperature fluctuation will be noticeable across the forecast period. Forecast highs will fluctuate between 46.4°F and 77°F, while the variation in nighttime lows will be also notably wide, as the minimum temperature is expected to range between 30.2°F and 44.6°F.
The warmest day is today, with a maximum temperature of 77°F; the coldest day will be next Monday, with a maximum of 46.4°F.
Updated: Oct 17, 2026 @ 20:36:27 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, sunshine will likely continue with scattered clouds at most.

Today, the maximum temperature will be 77°F, while the minimum temperature will be 39.2°F.
The maximum temperature will be significantly higher than the average highest temperature of 57.2°F in October. The lowest temperature today will be in line with the average low temperature.

On Saturday, in Sumatra, sunrise was at 7:31 am and sunset will be at 6:19 pm (MDT).

Today, the daylight will last for 10h and 49min.

Tomorrow, expect a mix of sun and clouds throughout the day.

Tomorrow, the maximum temperature will be 62.6°F, while the minimum temperature will be 37.4°F.
The highest temperature tomorrow will be relatively higher than the average maximum temperature in October. The lowest temperature tomorrow will be also a couple of degrees lower than the average low temperature.

On Sunday, in Sumatra, sunrise will be at 7:32 am and sunset at 6:18 pm (MDT).

In Sumatra, the length of the day tomorrow will be 10h and 46min.