Currently: 64 °F. Mostly cloudy. (Weather station: Knox County Airport, USA). See more current weatherAnnual Weather Averages Near Mount Vernon
Averages are for Knox County Airport, which is 5 miles from Mount Vernon.
Based on weather reports collected during 2012–2021.
All Year Climate & Weather Averages in Mount Vernon
High Temp: 82 °F
Low Temp: 13 °F
Mean Temp: 47 °F
Precipitation: 3.05"
Humidity: 69%
Dew Point: 43 °F
Wind: 11 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Mount Vernon
High Temp: 31 °F
Low Temp: 13 °F
Mean Temp: 22 °F
Precipitation: 2.05"
Humidity: 71%
Dew Point: 22 °F
Wind: 14 mph
Pressure: 30.12 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Mount Vernon
High Temp: 34 °F
Low Temp: 13 °F
Mean Temp: 23 °F
Precipitation: 2.02"
Humidity: 69%
Dew Point: 23 °F
Wind: 13 mph
Pressure: 30.09 "Hg
Visibility: 8 mi
March Climate & Weather Averages in Mount Vernon
High Temp: 43 °F
Low Temp: 22 °F
Mean Temp: 33 °F
Precipitation: 1.95"
Humidity: 64%
Dew Point: 30 °F
Wind: 13 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Mount Vernon
High Temp: 56 °F
Low Temp: 33 °F
Mean Temp: 45 °F
Precipitation: 3.16"
Humidity: 61%
Dew Point: 39 °F
Wind: 13 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Mount Vernon
High Temp: 70 °F
Low Temp: 46 °F
Mean Temp: 58 °F
Precipitation: 3.49"
Humidity: 67%
Dew Point: 52 °F
Wind: 10 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Mount Vernon
High Temp: 77 °F
Low Temp: 53 °F
Mean Temp: 65 °F
Precipitation: 4.23"
Humidity: 67%
Dew Point: 60 °F
Wind: 10 mph
Pressure: 29.96 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Mount Vernon
High Temp: 82 °F
Low Temp: 60 °F
Mean Temp: 71 °F
Precipitation: 4.33"
Humidity: 72%
Dew Point: 65 °F
Wind: 7 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Mount Vernon
High Temp: 80 °F
Low Temp: 57 °F
Mean Temp: 69 °F
Precipitation: 3.12"
Humidity: 74%
Dew Point: 63 °F
Wind: 6 mph
Pressure: 30.01 "Hg
Visibility: 8 mi
September Climate & Weather Averages in Mount Vernon
High Temp: 74 °F
Low Temp: 49 °F
Mean Temp: 61 °F
Precipitation: 2.83"
Humidity: 73%
Dew Point: 57 °F
Wind: 7 mph
Pressure: 30.06 "Hg
Visibility: 8 mi
October Climate & Weather Averages in Mount Vernon
High Temp: 62 °F
Low Temp: 41 °F
Mean Temp: 51 °F
Precipitation: 3.93"
Humidity: 71%
Dew Point: 46 °F
Wind: 10 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Mount Vernon
High Temp: 47 °F
Low Temp: 28 °F
Mean Temp: 37 °F
Precipitation: 2.35"
Humidity: 68%
Dew Point: 32 °F
Wind: 11 mph
Pressure: 30.15 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Mount Vernon
High Temp: 38 °F
Low Temp: 21 °F
Mean Temp: 30 °F
Precipitation: 3.16"
Humidity: 74%
Dew Point: 29 °F
Wind: 12 mph
Pressure: 30.09 "Hg
Visibility: 8 mi