Hourly Weather Forecast - Mount Vernon, IA

12 AM
36°F
10%
7mph
S
Mostly Clear
Humidity
85%
Feels like
30°F
Dew Point
31°F
1 AM
35°F
10%
7mph
S
Mostly Clear
Humidity
87%
Feels like
30°F
Dew Point
32°F
2 AM
35°F
10%
6mph
S
Clear
Humidity
88%
Feels like
30°F
Dew Point
32°F
3 AM
35°F
10%
6mph
SSW
Clear
Humidity
90%
Feels like
29°F
Dew Point
32°F
4 AM
34°F
10%
6mph
SSW
Hazy
Humidity
92%
Feels like
29°F
Dew Point
32°F
5 AM
33°F
10%
6mph
SSW
Cloudy
Humidity
94%
Feels like
28°F
Dew Point
32°F
6 AM
33°F
10%
6mph
SSW
Cloudy
Humidity
96%
Feels like
27°F
Dew Point
32°F
7 AM
33°F
10%
6mph
SW
Cloudy
Humidity
97%
Feels like
27°F
Dew Point
32°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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