Hourly Weather Forecast - Iona, SD

12 AM
35°F
0%
27mph
W
Windy
Humidity
43%
Feels like
22°F
Dew Point
15°F
1 AM
34°F
0%
29mph
WNW
Windy
Humidity
45%
Feels like
20°F
Dew Point
15°F
2 AM
32°F
0%
30mph
WNW
Windy
Humidity
47%
Feels like
18°F
Dew Point
14°F
3 AM
29°F
0%
34mph
WNW
Windy
Humidity
51%
Feels like
12°F
Dew Point
13°F
4 AM
25°F
0%
33mph
NW
Windy
Humidity
55%
Feels like
7°F
Dew Point
11°F
5 AM
22°F
0%
32mph
NW
Windy
Humidity
57%
Feels like
3°F
Dew Point
9°F
6 AM
20°F
0%
29mph
NW
Windy
Humidity
59%
Feels like
2°F
Dew Point
8°F
7 AM
20°F
0%
27mph
NW
Windy
Humidity
59%
Feels like
1°F
Dew Point
8°F
7:15 AM
8 AM
20°F
0%
26mph
NW
Windy
Humidity
58%
Feels like
2°F
Dew Point
7°F
9 AM
21°F
0%
24mph
NW
Windy
Humidity
55%
Feels like
4°F
Dew Point
7°F
10 AM
23°F
0%
22mph
NW
Windy
Humidity
51%
Feels like
7°F
Dew Point
7°F
11 AM
25°F
0%
20mph
NW
Sunny
Humidity
47%
Feels like
10°F
Dew Point
8°F
12 PM
26°F
0%
19mph
NW
Sunny
Humidity
44%
Feels like
13°F
Dew Point
8°F
1 PM
28°F
0%
17mph
NW
Sunny
Humidity
41%
Feels like
16°F
Dew Point
8°F
2 PM
29°F
0%
14mph
NW
Sunny
Humidity
41%
Feels like
18°F
Dew Point
8°F
3 PM
28°F
0%
9mph
NW
Sunny
Humidity
46%
Feels like
19°F
Dew Point
10°F
4 PM
26°F
0%
5mph
NNE
Mostly Sunny
Humidity
53%
Feels like
20°F
Dew Point
11°F
4:10 PM
5 PM
24°F
0%
7mph
ENE
Mostly Clear
Humidity
58%
Feels like
15°F
Dew Point
11°F
6 PM
22°F
0%
9mph
E
Mostly Clear
Humidity
59%
Feels like
13°F
Dew Point
10°F
7 PM
22°F
0%
10mph
ESE
Mostly Clear
Humidity
60%
Feels like
11°F
Dew Point
10°F
8 PM
21°F
0%
11mph
SE
Partly Cloudy
Humidity
61%
Feels like
9°F
Dew Point
10°F
9 PM
21°F
0%
12mph
SE
Partly Cloudy
Humidity
62%
Feels like
9°F
Dew Point
10°F
10 PM
22°F
0%
13mph
SE
Mostly Cloudy
Humidity
62%
Feels like
10°F
Dew Point
11°F
11 PM
24°F
0%
13mph
SE
Cloudy
Humidity
62%
Feels like
11°F
Dew Point
12°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday'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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