Hourly Weather Forecast - Gann Valley, SD

12 AM
-6°F
0%
5mph
E
Very Cold
Humidity
88%
Feels like
-18°F
Dew Point
-9°F
1 AM
-6°F
0%
6mph
ESE
Very Cold
Humidity
87%
Feels like
-18°F
Dew Point
-8°F
2 AM
-5°F
0%
7mph
SE
Very Cold
Humidity
86%
Feels like
-19°F
Dew Point
-8°F
3 AM
-4°F
0%
8mph
SE
Very Cold
Humidity
86%
Feels like
-19°F
Dew Point
-7°F
4 AM
-3°F
0%
9mph
SE
Very Cold
Humidity
86%
Feels like
-19°F
Dew Point
-7°F
5 AM
-3°F
0%
10mph
SE
Very Cold
Humidity
86%
Feels like
-20°F
Dew Point
-6°F
6 AM
-2°F
0%
11mph
SE
Very Cold
Humidity
87%
Feels like
-19°F
Dew Point
-5°F
7 AM
-1°F
0%
12mph
SE
Very Cold
Humidity
88%
Feels like
-19°F
Dew Point
-3°F
8 AM
1°F
0%
13mph
SE
Mostly Cloudy
Humidity
90%
Feels like
-17°F
Dew Point
-2°F
8:03 AM
9 AM
2°F
0%
14mph
SE
Mostly Cloudy
Humidity
91%
Feels like
-15°F
Dew Point
0°F
10 AM
5°F
0%
15mph
SE
Mostly Cloudy
Humidity
91%
Feels like
-13°F
Dew Point
3°F
11 AM
8°F
0%
17mph
SSE
Mostly Cloudy
Humidity
90%
Feels like
-9°F
Dew Point
6°F
12 PM
12°F
0%
17mph
SSE
Partly Cloudy
Humidity
89%
Feels like
-6°F
Dew Point
9°F
1 PM
15°F
0%
18mph
SSE
Partly Cloudy
Humidity
87%
Feels like
-1°F
Dew Point
12°F
2 PM
18°F
0%
17mph
SSE
Partly Cloudy
Humidity
84%
Feels like
3°F
Dew Point
14°F
3 PM
21°F
0%
17mph
SSE
Partly Cloudy
Humidity
82%
Feels like
6°F
Dew Point
16°F
4 PM
22°F
0%
16mph
SSE
Mostly Sunny
Humidity
82%
Feels like
8°F
Dew Point
17°F
4:58 PM
5 PM
22°F
0%
15mph
SSE
Clear
Humidity
83%
Feels like
9°F
Dew Point
18°F
6 PM
22°F
0%
14mph
SSE
Clear
Humidity
85%
Feels like
9°F
Dew Point
18°F
7 PM
22°F
0%
14mph
SSE
Clear
Humidity
86%
Feels like
10°F
Dew Point
19°F
8 PM
23°F
0%
13mph
SSE
Clear
Humidity
87%
Feels like
11°F
Dew Point
20°F
9 PM
23°F
0%
13mph
SSE
Clear
Humidity
88%
Feels like
11°F
Dew Point
20°F
10 PM
24°F
0%
12mph
SSE
Clear
Humidity
89%
Feels like
12°F
Dew Point
21°F
11 PM
24°F
0%
11mph
S
Clear
Humidity
89%
Feels like
13°F
Dew Point
21°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

Today's Weather Outlook

Today'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