Hourly Weather Forecast - Mount Vernon, IA

12 AM
37°F
10%
14mph
SSE
Mostly Cloudy
Humidity
88%
Feels like
28°F
Dew Point
34°F
1 AM
37°F
10%
14mph
S
Cloudy
Humidity
91%
Feels like
29°F
Dew Point
35°F
2 AM
38°F
10%
14mph
S
Cloudy
Humidity
92%
Feels like
30°F
Dew Point
36°F
3 AM
39°F
30%
14mph
S
30% Chance of Light Rain
Humidity
92%
Feels like
31°F
Dew Point
37°F
4 AM
40°F
30%
13mph
S
30% Chance of Light Rain
Humidity
94%
Feels like
32°F
Dew Point
38°F
5 AM
40°F
50%
13mph
SSW
50% Chance of Light Rain
Humidity
95%
Feels like
33°F
Dew Point
39°F
6 AM
40°F
80%
13mph
SSW
80% Chance of Light Rain
Humidity
95%
Feels like
33°F
Dew Point
39°F
7 AM
40°F
80%
12mph
SW
80% Chance of Light Rain
Humidity
93%
Feels like
33°F
Dew Point
38°F
7:28 AM
8 AM
40°F
60%
12mph
WSW
60% Chance of Light Rain
Humidity
92%
Feels like
33°F
Dew Point
38°F
9 AM
40°F
30%
11mph
W
30% Chance of Rain
Humidity
89%
Feels like
33°F
Dew Point
37°F
10 AM
40°F
30%
12mph
W
30% Chance Rain Showers
Humidity
85%
Feels like
33°F
Dew Point
36°F
11 AM
40°F
30%
13mph
WSW
30% Chance Rain Showers
Humidity
82%
Feels like
33°F
Dew Point
35°F
12 PM
39°F
10%
15mph
WSW
Partly Cloudy
Humidity
80%
Feels like
31°F
Dew Point
34°F
1 PM
37°F
10%
18mph
W
Partly Cloudy
Humidity
74%
Feels like
28°F
Dew Point
30°F
2 PM
35°F
10%
20mph
W
Windy
Humidity
69%
Feels like
23°F
Dew Point
26°F
3 PM
32°F
10%
22mph
W
Windy
Humidity
68%
Feels like
19°F
Dew Point
22°F
4 PM
29°F
0%
21mph
WNW
Windy
Humidity
66%
Feels like
15°F
Dew Point
19°F
4:36 PM
5 PM
26°F
0%
20mph
WNW
Windy
Humidity
66%
Feels like
12°F
Dew Point
16°F
6 PM
24°F
0%
21mph
WNW
Windy
Humidity
65%
Feels like
9°F
Dew Point
14°F
7 PM
22°F
0%
21mph
WNW
Windy
Humidity
64%
Feels like
6°F
Dew Point
11°F
8 PM
19°F
0%
22mph
WNW
Windy
Humidity
61%
Feels like
3°F
Dew Point
8°F
9 PM
17°F
0%
22mph
WNW
Windy
Humidity
59%
Feels like
0°F
Dew Point
5°F
10 PM
16°F
0%
21mph
WNW
Windy
Humidity
60%
Feels like
-1°F
Dew Point
5°F
11 PM
15°F
0%
21mph
WNW
Windy
Humidity
60%
Feels like
-2°F
Dew Point
4°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

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

Thursday's Weather Outlook

Thursday'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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