Annual Weather Averages Near Lewisville
Averages are for Dallas / Addison Airport, which is 11 miles from Lewisville.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Lewisville
High Temp: 96 °F
Low Temp: 39 °F
Mean Temp: 68 °F
Precipitation: 2.37"
Humidity: 62%
Dew Point: 52 °F
Wind: 17 mph
Pressure: 30.02 "Hg
Visibility: 11 mi
January Climate & Weather Averages in Lewisville
High Temp: 57 °F
Low Temp: 39 °F
Mean Temp: 48 °F
Precipitation: 1.97"
Humidity: 62%
Dew Point: 34 °F
Wind: 16 mph
Pressure: 30.14 "Hg
Visibility: 11 mi
February Climate & Weather Averages in Lewisville
High Temp: 61 °F
Low Temp: 42 °F
Mean Temp: 52 °F
Precipitation: 2.36"
Humidity: 63%
Dew Point: 37 °F
Wind: 18 mph
Pressure: 30.09 "Hg
Visibility: 10 mi
March Climate & Weather Averages in Lewisville
High Temp: 69 °F
Low Temp: 50 °F
Mean Temp: 60 °F
Precipitation: 2.41"
Humidity: 61%
Dew Point: 44 °F
Wind: 19 mph
Pressure: 30.03 "Hg
Visibility: 11 mi
April Climate & Weather Averages in Lewisville
High Temp: 76 °F
Low Temp: 57 °F
Mean Temp: 67 °F
Precipitation: 2.52"
Humidity: 61%
Dew Point: 51 °F
Wind: 20 mph
Pressure: 29.95 "Hg
Visibility: 11 mi
May Climate & Weather Averages in Lewisville
High Temp: 83 °F
Low Temp: 66 °F
Mean Temp: 75 °F
Precipitation: 3.02"
Humidity: 66%
Dew Point: 61 °F
Wind: 19 mph
Pressure: 29.93 "Hg
Visibility: 11 mi
June Climate & Weather Averages in Lewisville
High Temp: 91 °F
Low Temp: 74 °F
Mean Temp: 82 °F
Precipitation: 2.78"
Humidity: 63%
Dew Point: 68 °F
Wind: 17 mph
Pressure: 29.92 "Hg
Visibility: 11 mi
July Climate & Weather Averages in Lewisville
High Temp: 95 °F
Low Temp: 78 °F
Mean Temp: 86 °F
Precipitation: 1.32"
Humidity: 57%
Dew Point: 68 °F
Wind: 16 mph
Pressure: 29.97 "Hg
Visibility: 11 mi
August Climate & Weather Averages in Lewisville
High Temp: 96 °F
Low Temp: 77 °F
Mean Temp: 86 °F
Precipitation: 1.72"
Humidity: 55%
Dew Point: 67 °F
Wind: 15 mph
Pressure: 29.97 "Hg
Visibility: 11 mi
September Climate & Weather Averages in Lewisville
High Temp: 89 °F
Low Temp: 71 °F
Mean Temp: 80 °F
Precipitation: 2.46"
Humidity: 59%
Dew Point: 63 °F
Wind: 14 mph
Pressure: 29.99 "Hg
Visibility: 11 mi
October Climate & Weather Averages in Lewisville
High Temp: 79 °F
Low Temp: 60 °F
Mean Temp: 69 °F
Precipitation: 3.52"
Humidity: 62%
Dew Point: 54 °F
Wind: 16 mph
Pressure: 30.03 "Hg
Visibility: 11 mi
November Climate & Weather Averages in Lewisville
High Temp: 67 °F
Low Temp: 49 °F
Mean Temp: 58 °F
Precipitation: 2.06"
Humidity: 64%
Dew Point: 44 °F
Wind: 16 mph
Pressure: 30.11 "Hg
Visibility: 11 mi
December Climate & Weather Averages in Lewisville
High Temp: 59 °F
Low Temp: 41 °F
Mean Temp: 50 °F
Precipitation: 2.31"
Humidity: 65%
Dew Point: 36 °F
Wind: 16 mph
Pressure: 30.12 "Hg
Visibility: 11 mi