Weather forecast for 10 daysBig Sandy, MT

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 75°F
  • 37°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 20mphSW 225°
  • Humidity: 25%
  • UV index: 2
  • Sunrise: 7:43 am MDT
  • Sunset: 6:28 pm MDT
  • ▼
Today, on Saturday, October 17, variable cloud cover will pair with strong breezes.
The temperature will peak at a moderately hot 75.2°F during the day, dropping to a low of an icy 37.4°F at night.
The day's peak of 75.2°F reflects September's seasonal pattern more than October's.
Sunrise was at 7:43 am and sunset will be at 6:28 pm; the daylight will last for 10h and 44min.

Sunday Oct 18, 2026

  • 63°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 10mphESE 115°
  • Humidity: 45%
  • UV index: 3
  • Sunrise: 7:44 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
On Sunday, October 18, skies will stay clear and sunny.
Significant temperature fluctuations from a high of a comfortable 62.6°F to a low of an icy 35.6°F are forecasted.
Tomorrow, the maximum temperature is anticipated to be relatively higher than October's climate norm of 55.6°F.
Sunrise will be at 7:44 am and sunset at 6:26 pm; tomorrow's daylight will last for 10h and 41min.

10-day overview

Daily temperatures

Warmest day: today 75°C.
Coldest day: Monday 26.10. 46°C.

Chance of precipitation

Highest chance: Friday 45%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 75°F
  • 37°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 20mphSW 225°
  • Humidity: 25%
  • UV index: 2
  • Sunrise: 7:43 am MDT
  • Sunset: 6:28 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 63°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 10mphESE 115°
  • Humidity: 45%
  • UV index: 3
  • Sunrise: 7:44 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphSSE 158°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:46 am MDT
  • Sunset: 6:24 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 61°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 10mphNNW 327°
  • Humidity: 61%
  • UV index: 2
  • Sunrise: 7:47 am MDT
  • Sunset: 6:22 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphSSE 161°
  • Humidity: 56%
  • UV index: 2
  • Sunrise: 7:49 am MDT
  • Sunset: 6:20 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 68°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 7mphSSW 198°
  • Humidity: 57%
  • UV index: 2
  • Sunrise: 7:50 am MDT
  • Sunset: 6:18 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 57°F
  • 34°F
Showers
Showers
  • Precip. probability: 45%
  • Precipitation: 0.16"
  • Wind: 16mphW 265°
  • Humidity: 68%
  • UV index: 1
  • Sunrise: 7:52 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 48°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 13mphW 269°
  • Humidity: 60%
  • UV index: 2
  • Sunrise: 7:54 am MDT
  • Sunset: 6:15 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 48°F
  • 28°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 11mphNNE 20°
  • Humidity: 66%
  • UV index: 2
  • Sunrise: 7:55 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 46°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 9mphWSW 243°
  • Humidity: 70%
  • UV index: 2
  • Sunrise: 7:57 am MDT
  • Sunset: 6:11 pm MDT
  • ▼
Models point to a combination of gloomy, sun-filled and damp weather is anticipated.
With a 45% probability, rainfall is predicted only for Friday. The precipitation will be light at 0.16".
Temperature fluctuation will be noticeable in the next ten days. Highs will range from 46.4°F to 75.2°F, while the nightly low temperatures will show also a considerable swing, as nighttime lows are forecast to fall between 28.4°F and 44.6°F.
The warmest day is today, with a maximum temperature of 75.2°F; expect the coldest day on next Monday with a high of 46.4°F.
Updated: Oct 17, 2026 @ 15:23:53 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, strong breezes will keep things cool under a partly cloudy sky.

Today, the highest temperature will be 75.2°F, while the lowest temperature will be 37.4°F.
The maximum temperature today will be uncommonly higher than the average highest temperature of 55.6°F in October. Today, the lowest temperature will be in line with the average low temperature.

On Saturday, in Big Sandy, sunrise was at 7:43 am and sunset will be at 6:28 pm (MDT).

In Big Sandy, today, there will be 10h and 44min of daylight.

On Sunday, in Big Sandy, a sun-drenched sky is anticipated.

Tomorrow, the highest temperature will be 62.6°F, while the lowest temperature will be 35.6°F.
The highest temperature will be relatively higher than the average maximum of 55.6°F in October. Tomorrow, the lowest temperature will be also slightly cooler than the average low temperature.

On Sunday, in Big Sandy, sunrise will be at 7:44 am and sunset at 6:26 pm (MDT).

In Big Sandy, the length of the day tomorrow will be 10h and 41min.