Weather forecast for tomorrowGrass Range, MT

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 59°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphE 99°
  • Humidity: 45%
  • UV index: 3
  • Sunrise: 7:38 am MDT
  • Sunset: 6:22 pm MDT
  • ▼
On Sunday, October 18, high-altitude clouds may scatter across the sky, but the sun will still shine.
Temperature span will be from a high of a mild 59°F to a low of a wintry 39.2°F.
Tomorrow, the forecasted peak temperature is set to be relatively higher than the typical October temperature of 52.2°F.
Sunrise will be at 7:38 am and sunset at 6:22 pm; tomorrow's daylight will last for 10h and 44min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 57°C.
Minimum temperature: 46°C.

Chance of precipitation

Highest chance: 3 am - 9 am 1%.

Hourly weather forecast

  • 12 am
  • 55°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphW 268°
  • Humidity: 39%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 52°F
  • Feels like:
    48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphWNW 284°
  • Humidity: 45%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 50°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphWNW 289°
  • Humidity: 52%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 46°F
  • Feels like:
    43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphWNW 282°
  • Humidity: 56%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:38 am
  • 8 am
  • 45°F
  • Feels like:
    41°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphWSW 254°
  • Humidity: 63%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 50°F
  • Feels like:
    48°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphN 2°
  • Humidity: 51%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphE 83°
  • Humidity: 39%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 57°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphESE 103°
  • Humidity: 37%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 59°F
  • Feels like:
    55°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphESE 110°
  • Humidity: 36%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 55°F
  • Feels like:
    52°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphESE 109°
  • Humidity: 39%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:22 pm
  • 8 pm
  • 48°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSE 141°
  • Humidity: 50%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSE 162°
  • Humidity: 53%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of cloudy and bright weather is expected.
The temperature will be between a minimum of 44.6°F and a maximum of 59°F. The warmest part of the day is expected around 4 pm.
Tomorrow, the maximum will be a couple of degrees higher than the average high for October. The minimum temperature tomorrow will be also moderately higher than October's average low.
Updated: Oct 17, 2026 @ 21:34:43 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, moderate cloud cover will mix with sunshine throughout the day.

Tomorrow, the maximum temperature will be 59°F, while the minimum temperature will be 39.2°F.
Tomorrow, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature tomorrow will be also a couple of degrees higher than the average low temperature.

On Sunday, in Grass Range, sunrise will be at 7:38 am and sunset at 6:22 pm (MDT).

In Grass Range, tomorrow, there will be 10h and 44min of daylight.