Hourly Weather Forecast - Harrison, SD

12 AM
26°F
10%
6mph
SW
Clear
Humidity
70%
Feels like
19°F
Dew Point
18°F
1 AM
26°F
10%
6mph
SW
Clear
Humidity
71%
Feels like
19°F
Dew Point
18°F
2 AM
26°F
10%
7mph
SSW
Clear
Humidity
73%
Feels like
18°F
Dew Point
18°F
3 AM
25°F
10%
7mph
SSW
Clear
Humidity
74%
Feels like
17°F
Dew Point
18°F
4 AM
25°F
10%
8mph
SSW
Clear
Humidity
74%
Feels like
16°F
Dew Point
18°F
5 AM
25°F
10%
8mph
SSW
Clear
Humidity
75%
Feels like
16°F
Dew Point
18°F
6 AM
25°F
10%
8mph
SSW
Mostly Clear
Humidity
75%
Feels like
16°F
Dew Point
18°F
7 AM
25°F
10%
9mph
SSW
Mostly Clear
Humidity
75%
Feels like
16°F
Dew Point
19°F
8 AM
26°F
20%
9mph
SSW
Mostly Clear
Humidity
76%
Feels like
16°F
Dew Point
19°F
8:03 AM
9 AM
27°F
20%
10mph
SSW
Partly Cloudy
Humidity
74%
Feels like
17°F
Dew Point
20°F
10 AM
30°F
20%
11mph
S
Partly Cloudy
Humidity
69%
Feels like
21°F
Dew Point
21°F
11 AM
34°F
20%
11mph
S
Partly Cloudy
Humidity
63%
Feels like
25°F
Dew Point
22°F
12 PM
37°F
20%
11mph
S
Partly Cloudy
Humidity
58%
Feels like
29°F
Dew Point
23°F
1 PM
39°F
20%
11mph
S
Mostly Cloudy
Humidity
56%
Feels like
31°F
Dew Point
25°F
2 PM
40°F
20%
11mph
SSE
Cloudy
Humidity
57%
Feels like
33°F
Dew Point
26°F
3 PM
40°F
10%
11mph
SSE
Cloudy
Humidity
58%
Feels like
33°F
Dew Point
27°F
4 PM
39°F
10%
11mph
SSE
Cloudy
Humidity
61%
Feels like
32°F
Dew Point
27°F
5 PM
37°F
10%
11mph
SSE
Cloudy
Humidity
65%
Feels like
29°F
Dew Point
26°F
5:00 PM
6 PM
35°F
10%
11mph
SSE
Cloudy
Humidity
68%
Feels like
27°F
Dew Point
26°F
7 PM
34°F
10%
11mph
SSE
Cloudy
Humidity
68%
Feels like
26°F
Dew Point
25°F
8 PM
34°F
10%
11mph
SSE
Cloudy
Humidity
67%
Feels like
25°F
Dew Point
24°F
9 PM
33°F
30%
11mph
SSE
30% Chance of Light Rain
Humidity
66%
Feels like
25°F
Dew Point
23°F
10 PM
33°F
30%
11mph
SSE
30% Chance of Light Rain
Humidity
67%
Feels like
25°F
Dew Point
24°F
11 PM
33°F
10%
11mph
SSE
Cloudy
Humidity
69%
Feels like
25°F
Dew Point
24°F

Rainfall and Snowfall Totals Through Thursday

Pineapple Express Slams Northwestern U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday'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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