Hourly Weather Forecast - Iona, SD

12 AM
32°F
0%
8mph
SSW
Partly Cloudy
Humidity
91%
Feels like
25°F
Dew Point
29°F
1 AM
32°F
0%
9mph
S
Partly Cloudy
Humidity
89%
Feels like
25°F
Dew Point
29°F
2 AM
33°F
0%
10mph
S
Partly Cloudy
Humidity
87%
Feels like
24°F
Dew Point
29°F
3 AM
33°F
0%
11mph
SSW
Mostly Clear
Humidity
86%
Feels like
25°F
Dew Point
30°F
4 AM
34°F
0%
12mph
SSW
Mostly Clear
Humidity
85%
Feels like
25°F
Dew Point
30°F
5 AM
34°F
0%
14mph
SW
Mostly Clear
Humidity
83%
Feels like
25°F
Dew Point
30°F
6 AM
35°F
0%
15mph
SW
Mostly Clear
Humidity
80%
Feels like
26°F
Dew Point
30°F
7 AM
37°F
0%
17mph
SSW
Partly Cloudy
Humidity
76%
Feels like
27°F
Dew Point
30°F
7:14 AM
8 AM
39°F
0%
18mph
SSW
Partly Cloudy
Humidity
71%
Feels like
30°F
Dew Point
30°F
9 AM
43°F
0%
21mph
SSW
Windy
Humidity
63%
Feels like
35°F
Dew Point
31°F
10 AM
49°F
0%
23mph
SW
Windy
Humidity
54%
Feels like
41°F
Dew Point
33°F
11 AM
53°F
0%
25mph
SW
Windy
Humidity
48%
Feels like
53°F
Dew Point
34°F
12 PM
55°F
0%
26mph
SW
Windy
Humidity
44%
Feels like
55°F
Dew Point
34°F
1 PM
57°F
0%
28mph
SW
Windy
Humidity
43%
Feels like
57°F
Dew Point
35°F
2 PM
57°F
30%
28mph
WSW
30% Chance of Light Rain
Humidity
44%
Feels like
57°F
Dew Point
35°F
3 PM
55°F
30%
27mph
WSW
30% Chance of Light Rain
Humidity
51%
Feels like
55°F
Dew Point
37°F
4 PM
50°F
40%
24mph
W
40% Chance of Light Rain
Humidity
62%
Feels like
50°F
Dew Point
38°F
4:09 PM
5 PM
47°F
50%
25mph
WNW
50% Chance of Light Rain
Humidity
68%
Feels like
38°F
Dew Point
37°F
6 PM
44°F
50%
25mph
WNW
50% Chance of Light Rain
Humidity
65%
Feels like
35°F
Dew Point
33°F
7 PM
42°F
50%
24mph
WNW
50% Chance Rain Showers
Humidity
59%
Feels like
32°F
Dew Point
28°F
8 PM
39°F
40%
26mph
WNW
40% Chance Rain Showers
Humidity
53%
Feels like
28°F
Dew Point
24°F
9 PM
38°F
20%
25mph
WNW
Windy
Humidity
49%
Feels like
27°F
Dew Point
20°F
10 PM
37°F
10%
25mph
WNW
Windy
Humidity
45%
Feels like
26°F
Dew Point
18°F
11 PM
36°F
0%
26mph
W
Windy
Humidity
43%
Feels like
24°F
Dew Point
16°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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