Weather forecast for tomorrowBig Sandy, MT

Weather forecast for tomorrow

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.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 61°C.
Coldest hour: 6 am 39°C.

Chance of precipitation

Highest chance: 6 am 8%.

Hourly weather forecast

  • 12 am
  • 52°F
  • Feels like:
    48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphNW 310°
  • Humidity: 54%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 46°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphNW 320°
  • Humidity: 61%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 43°F
  • Feels like:
    39°F
Mostly Clear
Mostly Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphNW 326°
  • Humidity: 70%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 39°F
  • Feels like:
    37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 4mphNNW 347°
  • Humidity: 72%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:44 am
  • 8 am
  • 37°F
  • Feels like:
    36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphNNE 30°
  • Humidity: 74%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 46°F
  • Feels like:
    45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphENE 74°
  • Humidity: 57%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    54°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSE 158°
  • Humidity: 38%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 2 pm
  • 59°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSSE 151°
  • Humidity: 31%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 61°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSE 143°
  • Humidity: 30%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 57°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSE 134°
  • Humidity: 36%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:26 pm
  • 8 pm
  • 50°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphESE 123°
  • Humidity: 45%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphESE 122°
  • Humidity: 47%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, a combination of cloudy and bright weather is forecasted.
The temperature will be between a minimum of 37.4°F and a maximum of 60.8°F. The warmest part of the day will be from 3 pm to 5 pm.
The highest temperature will be relatively higher than October's average maximum of 55.6°F. The nighttime low will be also relatively lower than the typical October minimum temperature of 39.4°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

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.