Weather forecast for tomorrowGrantsdale, MT
Weather forecast for tomorrow
Monday Oct 19, 2026
- 70°F
- 36°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphS 186°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:59 am MDT
- Sunset: 6:43 pm MDT
- details ▼
On Monday, October 19, mostly sunny and dry conditions will continue.
Significant temperature fluctuations from a high of a pleasant 69.8°F to a low of an icy 35.6°F are anticipated.
With a forecast of 69.8°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 7:59 am and sunset at 6:43 pm; tomorrow's daylight will last for 10h and 44min.
Significant temperature fluctuations from a high of a pleasant 69.8°F to a low of an icy 35.6°F are anticipated.
With a forecast of 69.8°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 7:59 am and sunset at 6:43 pm; tomorrow's daylight will last for 10h and 44min.
Hourly overview
Hourly temperatures
Warmest period: 3 pm - 6 pm 64°C.
Coldest hour: 6 am 36°C.
Coldest hour: 6 am 36°C.
Chance of precipitation
Highest chance: 1%.
Hourly weather forecast
- 12 am
- 41°F
- Feels like:41°F
Mostly Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphS 175°
- Humidity: 79%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 39°F
- Feels like:39°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSSE 168°
- Humidity: 81%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 37°F
- Feels like:37°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSSE 168°
- Humidity: 83%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 36°F
- Feels like:36°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSSE 164°
- Humidity: 82%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:59 am
- 8 am
- 36°F
- Feels like:32°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphS 183°
- Humidity: 81%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 43°F
- Feels like:41°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphS 181°
- Humidity: 74%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 54°F
- Feels like:52°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphS 179°
- Humidity: 53%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 2 pm
- 61°F
- Feels like:61°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphS 175°
- Humidity: 39%
- Pressure: 29.77"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 68°F
- Feels like:68°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphS 171°
- Humidity: 31%
- Pressure: 29.74"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 64°F
- Feels like:64°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphWNW 302°
- Humidity: 39%
- Pressure: 29.74"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:43 pm
- 8 pm
- 54°F
- Feels like:54°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphNNW 338°
- Humidity: 53%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 48°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphSW 216°
- Humidity: 60%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, a combination of bright and cloud-filled weather is anticipated.
The temperature will be between a minimum of 35.6°F and a maximum of 68°F. The warmest part of the day is anticipated around 4 pm.
The highest temperature is more alike with September's average maximum of 66.2°F than October's usual of 50°F. The minimum temperature will be a couple of degrees higher than October's average low of 30.4°F.
The temperature will be between a minimum of 35.6°F and a maximum of 68°F. The warmest part of the day is anticipated around 4 pm.
The highest temperature is more alike with September's average maximum of 66.2°F than October's usual of 50°F. The minimum temperature will be a couple of degrees higher than October's average low of 30.4°F.
Updated: Oct 18, 2026 @ 10:49:59 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Monday, open skies and radiant sunshine are expected.
Tomorrow, the highest temperature will be 69.8°F, while the lowest temperature will be 35.6°F.
The highest temperature will be significantly higher than the average maximum of 50°F in October. The lowest temperature will be a few degrees higher than the average low of 30.4°F.
The highest temperature will be significantly higher than the average maximum of 50°F in October. The lowest temperature will be a few degrees higher than the average low of 30.4°F.
On Monday, in Grantsdale, sunrise will be at 7:59 am and sunset at 6:43 pm (MDT).
In Grantsdale, the length of the day tomorrow will be 10h and 44min.
