Hourly Weather Forecast - Big Arm, MT

4 AM
44°F
30%
21mph
SW
30% Chance of Light Rain
Humidity
66%
Feels like
35°F
Dew Point
33°F
5 AM
43°F
40%
21mph
SW
40% Chance of Light Rain
Humidity
67%
Feels like
35°F
Dew Point
33°F
6 AM
43°F
40%
21mph
SW
40% Chance of Light Rain
Humidity
68%
Feels like
34°F
Dew Point
33°F
7 AM
42°F
30%
20mph
WSW
30% Chance of Light Rain
Humidity
68%
Feels like
34°F
Dew Point
33°F
7:56 AM
8 AM
42°F
30%
19mph
WSW
30% Chance of Rain
Humidity
68%
Feels like
33°F
Dew Point
32°F
9 AM
42°F
30%
19mph
WSW
30% Chance of Rain
Humidity
65%
Feels like
33°F
Dew Point
31°F
10 AM
42°F
30%
19mph
WSW
30% Chance of Light Rain
Humidity
62%
Feels like
33°F
Dew Point
30°F
11 AM
42°F
30%
19mph
WSW
30% Chance of Light Rain
Humidity
59%
Feels like
33°F
Dew Point
28°F
12 PM
42°F
10%
19mph
W
Partly Cloudy
Humidity
55%
Feels like
33°F
Dew Point
27°F
1 PM
42°F
10%
19mph
W
Partly Cloudy
Humidity
52%
Feels like
33°F
Dew Point
25°F
2 PM
41°F
10%
19mph
W
Mostly Cloudy
Humidity
51%
Feels like
33°F
Dew Point
24°F
3 PM
41°F
10%
18mph
W
Cloudy
Humidity
50%
Feels like
32°F
Dew Point
24°F
4 PM
40°F
10%
18mph
WSW
Cloudy
Humidity
51%
Feels like
32°F
Dew Point
24°F
5 PM
40°F
10%
16mph
WSW
Cloudy
Humidity
53%
Feels like
32°F
Dew Point
24°F
6 PM
39°F
20%
14mph
WSW
Cloudy
Humidity
55%
Feels like
31°F
Dew Point
25°F
7 PM
39°F
20%
11mph
WSW
Cloudy
Humidity
57%
Feels like
32°F
Dew Point
25°F
7:38 PM
8 PM
37°F
30%
10mph
SW
30% Chance of Flurries
Humidity
62%
Feels like
31°F
Dew Point
26°F
9 PM
37°F
30%
9mph
SW
30% Chance of Flurries
Humidity
66%
Feels like
30°F
Dew Point
26°F
10 PM
36°F
30%
8mph
SSW
30% Chance of Flurries
Humidity
69%
Feels like
30°F
Dew Point
27°F
11 PM
36°F
30%
7mph
SW
30% Chance of Snow
Humidity
72%
Feels like
30°F
Dew Point
28°F

Tonight's Severe Weather Outlook

Severe Storms Continue To Wreak Havoc on East, Gulf Coasts

Multiple rounds of severe storms will form today from the Gulf Coast to the Mid-Atlantic.

Wind Gust Forecast

High Winds & Heavy Snow Batter Northern U.S.

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for March 5, 2026

Drought Worsens Nationwide Despite Multiple Disturbances

A tornado on the ground in Hildreth, Neb., on June 14, 2014 (NOAA Photo Library/Ken Engquist).

Tornadoes and Road Safety -- Do's and Don't's

A pothole big enough to hold a traffic cone and garbage. (David Shankbone, Wikimedia Common)

Potholes: A Springtime Driving Menace

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide