Hourly Weather Forecast - Grass Range, MT

12 AM
27°F
20%
27mph
WNW
Windy
Humidity
55%
Feels like
11°F
Dew Point
13°F
1 AM
27°F
10%
23mph
WNW
Windy
Humidity
54%
Feels like
13°F
Dew Point
13°F
2 AM
27°F
10%
19mph
WNW
Partly Cloudy
Humidity
54%
Feels like
14°F
Dew Point
13°F
3 AM
27°F
10%
17mph
WNW
Partly Cloudy
Humidity
55%
Feels like
15°F
Dew Point
13°F
4 AM
27°F
0%
14mph
WNW
Mostly Clear
Humidity
56%
Feels like
16°F
Dew Point
14°F
5 AM
27°F
0%
12mph
WNW
Clear
Humidity
57%
Feels like
17°F
Dew Point
14°F
6 AM
27°F
0%
10mph
W
Clear
Humidity
58%
Feels like
18°F
Dew Point
15°F
7 AM
27°F
0%
9mph
WSW
Clear
Humidity
59%
Feels like
18°F
Dew Point
15°F
7:56 AM
8 AM
28°F
0%
9mph
WSW
Sunny
Humidity
58%
Feels like
19°F
Dew Point
15°F
9 AM
30°F
0%
9mph
SW
Mostly Sunny
Humidity
55%
Feels like
21°F
Dew Point
15°F
10 AM
32°F
0%
8mph
SW
Mostly Sunny
Humidity
50%
Feels like
25°F
Dew Point
15°F
11 AM
34°F
0%
8mph
SW
Partly Cloudy
Humidity
46%
Feels like
27°F
Dew Point
15°F
12 PM
35°F
0%
9mph
SSW
Partly Cloudy
Humidity
44%
Feels like
29°F
Dew Point
15°F
1 PM
36°F
0%
10mph
SSW
Partly Cloudy
Humidity
43%
Feels like
29°F
Dew Point
16°F
2 PM
37°F
0%
10mph
SSW
Partly Cloudy
Humidity
43%
Feels like
29°F
Dew Point
16°F
3 PM
36°F
10%
11mph
SSW
Partly Cloudy
Humidity
46%
Feels like
28°F
Dew Point
17°F
4 PM
35°F
10%
11mph
SSW
Partly Cloudy
Humidity
51%
Feels like
26°F
Dew Point
19°F
4:27 PM
5 PM
34°F
10%
13mph
S
Partly Cloudy
Humidity
55%
Feels like
25°F
Dew Point
19°F
6 PM
34°F
10%
14mph
SSW
Partly Cloudy
Humidity
56%
Feels like
24°F
Dew Point
20°F
7 PM
34°F
10%
15mph
SSW
Mostly Cloudy
Humidity
57%
Feels like
25°F
Dew Point
21°F
8 PM
35°F
30%
16mph
SSW
30% Chance Frozen Mix
Humidity
57%
Feels like
26°F
Dew Point
22°F
9 PM
37°F
30%
17mph
SSW
30% Chance of Light Rain
Humidity
56%
Feels like
27°F
Dew Point
23°F
10 PM
39°F
30%
17mph
SW
30% Chance of Light Rain
Humidity
55%
Feels like
30°F
Dew Point
24°F
11 PM
41°F
10%
18mph
SW
Cloudy
Humidity
54%
Feels like
32°F
Dew Point
26°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday's Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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