Annual Weather Averages Near Lewisville
Averages are for Dallas / Addison Airport, which is 11 miles from Lewisville.
Based on weather reports collected during 1985–2015.
All Year Climate & Weather Averages in Lewisville
High Temp: 96 °F
Low Temp: 39 °F
Mean Temp: 68 °F
Precipitation: 0.55"
Humidity: 61%
Dew Point: 52 °F
Wind: 9 mph
Pressure: 30.02 "Hg
Visibility: 11 mi
January Climate & Weather Averages in Lewisville
High Temp: 58 °F
Low Temp: 39 °F
Mean Temp: 48 °F
Precipitation: 0.54"
Humidity: 63%
Dew Point: 34 °F
Wind: 9 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: 0.58"
Humidity: 63%
Dew Point: 37 °F
Wind: 10 mph
Pressure: 30.09 "Hg
Visibility: 11 mi
March Climate & Weather Averages in Lewisville
High Temp: 69 °F
Low Temp: 50 °F
Mean Temp: 59 °F
Precipitation: 0.53"
Humidity: 61%
Dew Point: 44 °F
Wind: 11 mph
Pressure: 30.02 "Hg
Visibility: 11 mi
April Climate & Weather Averages in Lewisville
High Temp: 77 °F
Low Temp: 58 °F
Mean Temp: 67 °F
Precipitation: 0.79"
Humidity: 61%
Dew Point: 52 °F
Wind: 11 mph
Pressure: 29.95 "Hg
Visibility: 11 mi
May Climate & Weather Averages in Lewisville
High Temp: 84 °F
Low Temp: 66 °F
Mean Temp: 75 °F
Precipitation: 0.68"
Humidity: 66%
Dew Point: 62 °F
Wind: 10 mph
Pressure: 29.92 "Hg
Visibility: 11 mi
June Climate & Weather Averages in Lewisville
High Temp: 91 °F
Low Temp: 74 °F
Mean Temp: 82 °F
Precipitation: 0.78"
Humidity: 62%
Dew Point: 68 °F
Wind: 10 mph
Pressure: 29.92 "Hg
Visibility: 11 mi
July Climate & Weather Averages in Lewisville
High Temp: 95 °F
Low Temp: 77 °F
Mean Temp: 86 °F
Precipitation: 0.12"
Humidity: 57%
Dew Point: 68 °F
Wind: 9 mph
Pressure: 29.97 "Hg
Visibility: 12 mi
August Climate & Weather Averages in Lewisville
High Temp: 96 °F
Low Temp: 78 °F
Mean Temp: 87 °F
Precipitation: 0.23"
Humidity: 54%
Dew Point: 67 °F
Wind: 8 mph
Pressure: 29.96 "Hg
Visibility: 11 mi
September Climate & Weather Averages in Lewisville
High Temp: 89 °F
Low Temp: 70 °F
Mean Temp: 79 °F
Precipitation: 0.46"
Humidity: 59%
Dew Point: 63 °F
Wind: 8 mph
Pressure: 29.98 "Hg
Visibility: 11 mi
October Climate & Weather Averages in Lewisville
High Temp: 78 °F
Low Temp: 59 °F
Mean Temp: 69 °F
Precipitation: 0.72"
Humidity: 62%
Dew Point: 54 °F
Wind: 9 mph
Pressure: 30.04 "Hg
Visibility: 12 mi
November Climate & Weather Averages in Lewisville
High Temp: 67 °F
Low Temp: 49 °F
Mean Temp: 58 °F
Precipitation: 0.56"
Humidity: 64%
Dew Point: 44 °F
Wind: 9 mph
Pressure: 30.10 "Hg
Visibility: 11 mi
December Climate & Weather Averages in Lewisville
High Temp: 58 °F
Low Temp: 40 °F
Mean Temp: 49 °F
Precipitation: 0.57"
Humidity: 66%
Dew Point: 36 °F
Wind: 9 mph
Pressure: 30.13 "Hg
Visibility: 11 mi