Hourly Weather Forecast - Sidney, MT

10 AM
15°F
10%
7mph
SE
Mostly Cloudy
Humidity
78%
Feels like
5°F
Dew Point
9°F
11 AM
17°F
10%
8mph
SE
Cloudy
Humidity
79%
Feels like
6°F
Dew Point
11°F
12 PM
18°F
20%
9mph
SE
Cloudy
Humidity
78%
Feels like
7°F
Dew Point
13°F
1 PM
20°F
20%
10mph
SE
Cloudy
Humidity
82%
Feels like
9°F
Dew Point
15°F
2 PM
21°F
40%
11mph
SE
40% Chance of Flurries
Humidity
87%
Feels like
10°F
Dew Point
18°F
3 PM
22°F
60%
12mph
SE
60% Chance of Snow
Humidity
88%
Feels like
10°F
Dew Point
19°F
4 PM
24°F
70%
14mph
SE
70% Chance of Heavy Snow
Humidity
90%
Feels like
12°F
Dew Point
22°F
4:04 PM
5 PM
27°F
50%
15mph
SE
50% Chance of Heavy Snow
Humidity
88%
Feels like
15°F
Dew Point
24°F
6 PM
29°F
30%
14mph
SSE
30% Chance Frozen Mix
Humidity
82%
Feels like
18°F
Dew Point
24°F
7 PM
31°F
20%
13mph
SSE
Cloudy
Humidity
80%
Feels like
22°F
Dew Point
26°F
8 PM
33°F
10%
11mph
SSE
Cloudy
Humidity
80%
Feels like
24°F
Dew Point
27°F
9 PM
33°F
10%
9mph
S
Mostly Cloudy
Humidity
78%
Feels like
25°F
Dew Point
27°F
10 PM
31°F
10%
8mph
S
Cloudy
Humidity
83%
Feels like
24°F
Dew Point
26°F
11 PM
30°F
10%
7mph
SSW
Cloudy
Humidity
85%
Feels like
23°F
Dew Point
26°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

Thursday's Weather Outlook

Thursday's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide