Weather forecast for 10 daysBighorn, MT

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 66°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphNE 51°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:31 am MDT
  • Sunset: 6:18 pm MDT
  • ▼
On Sunday, October 18, open skies and radiant sunshine are expected.
Day and night temperatures will sharply contrast, oscillating between a comfortable 66.2°F and an icy 33.8°F.
Today, meteorological data suggests the high will feel more like September, based on a forecast of 66.2°F.
Sunrise will be at 7:31 am and sunset at 6:18 pm; the daylight will last for 10h and 47min.

10-day overview

Daily temperatures

Warmest day: Thursday 72°C.
Coldest day: Tuesday 27.10. 48°C.

Chance of precipitation

Highest chance: Friday 68%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 66°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphNE 51°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:31 am MDT
  • Sunset: 6:18 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 70°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphSSE 166°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:32 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 10mphWNW 297°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:34 am MDT
  • Sunset: 6:14 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 68°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 7mphSE 130°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:35 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 72°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0.08"
  • Wind: 6mphSW 225°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:36 am MDT
  • Sunset: 6:11 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 61°F
  • 39°F
Rain
Rain
  • Precip. probability: 68%
  • Precipitation: 0.31"
  • Wind: 17mphWNW 300°
  • Humidity: 66%
  • UV index: 2
  • Sunrise: 7:38 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 50°F
  • 32°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 12mphWNW 303°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:39 am MDT
  • Sunset: 6:08 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 54°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 10mphNE 46°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:41 am MDT
  • Sunset: 6:06 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 50°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 9mphNNW 346°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 7:42 am MDT
  • Sunset: 6:04 pm MDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 48°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 9mphNW 314°
  • Humidity: 72%
  • UV index: 2
  • Sunrise: 7:44 am MDT
  • Sunset: 6:03 pm MDT
  • ▼
During the ten-day period, sun-filled, dull and rain-soaked weather is forecasted.
With a 68% probability, rainfall is expected only on Friday. Expected precipitation will be light at 0.31".
The temperature will vary considerably in the upcoming days. Forecast highs will fluctuate between 48.2°F and 71.6°F, while there will be also a marked difference in overnight low temperatures, as the lowest temperatures will be recorded between 30.2°F and 46.4°F.
The warmest day will be Thursday, with a maximum of 71.6°F; the lowest daytime temperature of the period will be reached on next Tuesday, peaking at 48.2°F.
Updated: Oct 18, 2026 @ 11:23:28 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, mostly clear skies and sunshine will create ideal daytime conditions.

Today, the highest temperature will be 66.2°F, while the lowest temperature will be 33.8°F.
Today, the maximum temperature will be slightly warmer than the average highest temperature in October. The lowest temperature will be also slightly cooler than the average low of 41.4°F.

On Sunday, in Bighorn, sunrise will be at 7:31 am and sunset at 6:18 pm (MDT).

In Bighorn, today, there will be 10h and 47min of daylight.