Annual Weather Averages in Williston
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Williston
High Temp: 85 °F
Low Temp: 2 °F
Mean Temp: 42 °F
Precipitation: 1.28"
Humidity: 67%
Dew Point: 31 °F
Wind: 14 mph
Pressure: 30.03 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Williston
High Temp: 24 °F
Low Temp: 2 °F
Mean Temp: 13 °F
Precipitation: 0.62"
Humidity: 80%
Dew Point: 8 °F
Wind: 13 mph
Pressure: 30.15 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Williston
High Temp: 27 °F
Low Temp: 5 °F
Mean Temp: 16 °F
Precipitation: 0.54"
Humidity: 78%
Dew Point: 11 °F
Wind: 13 mph
Pressure: 30.15 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Williston
High Temp: 41 °F
Low Temp: 18 °F
Mean Temp: 30 °F
Precipitation: 0.66"
Humidity: 71%
Dew Point: 21 °F
Wind: 14 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Williston
High Temp: 56 °F
Low Temp: 29 °F
Mean Temp: 43 °F
Precipitation: 1.04"
Humidity: 59%
Dew Point: 28 °F
Wind: 16 mph
Pressure: 30.01 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Williston
High Temp: 67 °F
Low Temp: 40 °F
Mean Temp: 54 °F
Precipitation: 2.09"
Humidity: 58%
Dew Point: 39 °F
Wind: 16 mph
Pressure: 29.97 "Hg
Visibility: 10 mi
June Climate & Weather Averages in Williston
High Temp: 77 °F
Low Temp: 50 °F
Mean Temp: 64 °F
Precipitation: 2.59"
Humidity: 63%
Dew Point: 50 °F
Wind: 14 mph
Pressure: 29.91 "Hg
Visibility: 10 mi
July Climate & Weather Averages in Williston
High Temp: 85 °F
Low Temp: 56 °F
Mean Temp: 71 °F
Precipitation: 2.55"
Humidity: 59%
Dew Point: 55 °F
Wind: 12 mph
Pressure: 29.94 "Hg
Visibility: 10 mi
August Climate & Weather Averages in Williston
High Temp: 84 °F
Low Temp: 54 °F
Mean Temp: 69 °F
Precipitation: 1.60"
Humidity: 56%
Dew Point: 52 °F
Wind: 12 mph
Pressure: 29.95 "Hg
Visibility: 10 mi
September Climate & Weather Averages in Williston
High Temp: 73 °F
Low Temp: 43 °F
Mean Temp: 58 °F
Precipitation: 1.30"
Humidity: 58%
Dew Point: 43 °F
Wind: 13 mph
Pressure: 29.98 "Hg
Visibility: 10 mi
October Climate & Weather Averages in Williston
High Temp: 56 °F
Low Temp: 31 °F
Mean Temp: 44 °F
Precipitation: 0.98"
Humidity: 65%
Dew Point: 31 °F
Wind: 14 mph
Pressure: 30.02 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Williston
High Temp: 39 °F
Low Temp: 18 °F
Mean Temp: 29 °F
Precipitation: 0.69"
Humidity: 74%
Dew Point: 21 °F
Wind: 13 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Williston
High Temp: 27 °F
Low Temp: 6 °F
Mean Temp: 17 °F
Precipitation: 0.67"
Humidity: 80%
Dew Point: 12 °F
Wind: 13 mph
Pressure: 30.12 "Hg
Visibility: 9 mi