Hourly Weather Forecast - Gann Valley, SD

12 AM
31°F
0%
9mph
SSE
Mostly Clear
Humidity
73%
Feels like
23°F
Dew Point
24°F
1 AM
31°F
0%
9mph
SSE
Mostly Clear
Humidity
73%
Feels like
23°F
Dew Point
24°F
2 AM
31°F
0%
9mph
SSE
Mostly Clear
Humidity
75%
Feels like
23°F
Dew Point
24°F
3 AM
31°F
0%
9mph
SSE
Mostly Clear
Humidity
75%
Feels like
23°F
Dew Point
24°F
4 AM
31°F
0%
9mph
SSE
Clear
Humidity
76%
Feels like
23°F
Dew Point
24°F
5 AM
31°F
0%
9mph
SSE
Clear
Humidity
76%
Feels like
23°F
Dew Point
24°F
6 AM
31°F
0%
9mph
SSE
Clear
Humidity
76%
Feels like
24°F
Dew Point
25°F
7 AM
32°F
0%
9mph
SSE
Mostly Clear
Humidity
78%
Feels like
24°F
Dew Point
25°F
8 AM
32°F
0%
9mph
SSE
Mostly Clear
Humidity
79%
Feels like
24°F
Dew Point
26°F
8:08 AM
9 AM
33°F
0%
9mph
S
Mostly Sunny
Humidity
78%
Feels like
26°F
Dew Point
27°F
10 AM
36°F
0%
8mph
S
Mostly Sunny
Humidity
73%
Feels like
30°F
Dew Point
29°F
11 AM
40°F
0%
8mph
S
Sunny
Humidity
67%
Feels like
35°F
Dew Point
30°F
12 PM
44°F
0%
8mph
SSW
Sunny
Humidity
62%
Feels like
39°F
Dew Point
31°F
1 PM
46°F
0%
8mph
SSW
Sunny
Humidity
59%
Feels like
42°F
Dew Point
32°F
2 PM
47°F
0%
7mph
SW
Mostly Sunny
Humidity
58%
Feels like
44°F
Dew Point
33°F
3 PM
48°F
0%
7mph
SW
Mostly Sunny
Humidity
59%
Feels like
45°F
Dew Point
34°F
4 PM
46°F
0%
6mph
WSW
Mostly Sunny
Humidity
64%
Feels like
43°F
Dew Point
34°F
5 PM
43°F
0%
5mph
W
Mostly Sunny
Humidity
70%
Feels like
40°F
Dew Point
34°F
5:01 PM
6 PM
40°F
0%
5mph
WNW
Partly Cloudy
Humidity
76%
Feels like
37°F
Dew Point
34°F
7 PM
39°F
0%
5mph
NW
Mostly Clear
Humidity
79%
Feels like
35°F
Dew Point
33°F
8 PM
38°F
0%
5mph
NW
Mostly Clear
Humidity
80%
Feels like
35°F
Dew Point
33°F
9 PM
38°F
0%
5mph
NW
Mostly Clear
Humidity
81%
Feels like
34°F
Dew Point
32°F
10 PM
37°F
0%
5mph
NW
Mostly Clear
Humidity
82%
Feels like
33°F
Dew Point
32°F
11 PM
36°F
0%
5mph
NW
Mostly Clear
Humidity
84%
Feels like
32°F
Dew Point
32°F

Forecast Peak Wind Gusts Today

High Winds, Rain, and Snow Cross the Country

A clipper moving over the Great Lakes brings rain, snow, and high winds through the Atlantic Coastline.

Rainfall and Snowfall Totals Through Friday

Atmospheric River Symptoms Repeat in the Northwest

Thursday's Weather Outlook

Today's Weather Outlook

Flu Update Valid For Week Ending December 6, 2025

Weekly Flu Update: Flu Exceeds Annual Baseline

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

How to Measure Snow via NWS

How To Measure Snow

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