Hourly Weather Forecast - Mount Vernon, IA

3 AM
5°F
0%
11mph
S
Partly Cloudy
Humidity
79%
Feels like
-11°F
Dew Point
0°F
4 AM
6°F
0%
12mph
S
Partly Cloudy
Humidity
79%
Feels like
-9°F
Dew Point
1°F
5 AM
8°F
0%
12mph
S
Partly Cloudy
Humidity
78%
Feels like
-8°F
Dew Point
3°F
6 AM
10°F
0%
12mph
SSW
Partly Cloudy
Humidity
78%
Feels like
-5°F
Dew Point
4°F
7 AM
11°F
0%
12mph
SSW
Partly Cloudy
Humidity
78%
Feels like
-3°F
Dew Point
6°F
7:26 AM
8 AM
13°F
0%
11mph
SSW
Partly Cloudy
Humidity
77%
Feels like
0°F
Dew Point
8°F
9 AM
15°F
0%
11mph
SSW
Mostly Cloudy
Humidity
76%
Feels like
2°F
Dew Point
9°F
10 AM
18°F
0%
11mph
SW
Mostly Cloudy
Humidity
75%
Feels like
6°F
Dew Point
11°F
11 AM
20°F
0%
10mph
SW
Partly Cloudy
Humidity
74%
Feels like
9°F
Dew Point
13°F
12 PM
22°F
0%
10mph
SW
Partly Cloudy
Humidity
73%
Feels like
11°F
Dew Point
15°F
1 PM
24°F
0%
9mph
WSW
Partly Cloudy
Humidity
72%
Feels like
14°F
Dew Point
16°F
2 PM
25°F
0%
8mph
WSW
Partly Cloudy
Humidity
72%
Feels like
16°F
Dew Point
17°F
3 PM
25°F
0%
7mph
WSW
Mostly Cloudy
Humidity
73%
Feels like
17°F
Dew Point
17°F
4 PM
24°F
0%
6mph
W
Partly Cloudy
Humidity
76%
Feels like
17°F
Dew Point
17°F
4:35 PM
5 PM
22°F
0%
4mph
W
Partly Cloudy
Humidity
80%
Feels like
17°F
Dew Point
17°F
6 PM
21°F
0%
3mph
W
Partly Cloudy
Humidity
83%
Feels like
16°F
Dew Point
17°F
7 PM
20°F
0%
3mph
W
Clear
Humidity
86%
Feels like
20°F
Dew Point
16°F
8 PM
19°F
0%
2mph
W
Clear
Humidity
88%
Feels like
19°F
Dew Point
16°F
9 PM
18°F
0%
2mph
W
Clear
Humidity
90%
Feels like
18°F
Dew Point
15°F
10 PM
17°F
0%
1mph
WNW
Clear
Humidity
90%
Feels like
17°F
Dew Point
15°F
11 PM
17°F
0%
1mph
NNW
Clear
Humidity
90%
Feels like
17°F
Dew Point
15°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Monday's Weather Outlook

Monday'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 strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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