Annual Weather Averages Near Lewiston
Averages are for Auburn-Lewiston, which is 5 miles from Lewiston.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Lewiston
High Temp: 80 °F
Low Temp: 12 °F
Mean Temp: 46 °F
Precipitation: 2.72"
Humidity: 70%
Dew Point: 35 °F
Wind: 11 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Lewiston
High Temp: 30 °F
Low Temp: 12 °F
Mean Temp: 21 °F
Precipitation: 2.19"
Humidity: 67%
Dew Point: 11 °F
Wind: 11 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Lewiston
High Temp: 33 °F
Low Temp: 14 °F
Mean Temp: 23 °F
Precipitation: 2.02"
Humidity: 64%
Dew Point: 12 °F
Wind: 12 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Lewiston
High Temp: 41 °F
Low Temp: 23 °F
Mean Temp: 32 °F
Precipitation: 2.42"
Humidity: 63%
Dew Point: 19 °F
Wind: 13 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Lewiston
High Temp: 53 °F
Low Temp: 34 °F
Mean Temp: 43 °F
Precipitation: 3.17"
Humidity: 62%
Dew Point: 29 °F
Wind: 13 mph
Pressure: 29.96 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Lewiston
High Temp: 65 °F
Low Temp: 44 °F
Mean Temp: 55 °F
Precipitation: 2.59"
Humidity: 67%
Dew Point: 41 °F
Wind: 11 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Lewiston
High Temp: 75 °F
Low Temp: 54 °F
Mean Temp: 64 °F
Precipitation: 2.94"
Humidity: 72%
Dew Point: 53 °F
Wind: 10 mph
Pressure: 29.94 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Lewiston
High Temp: 80 °F
Low Temp: 59 °F
Mean Temp: 70 °F
Precipitation: 3.03"
Humidity: 74%
Dew Point: 59 °F
Wind: 9 mph
Pressure: 29.95 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Lewiston
High Temp: 79 °F
Low Temp: 58 °F
Mean Temp: 68 °F
Precipitation: 2.46"
Humidity: 75%
Dew Point: 58 °F
Wind: 8 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Lewiston
High Temp: 71 °F
Low Temp: 50 °F
Mean Temp: 60 °F
Precipitation: 2.49"
Humidity: 76%
Dew Point: 51 °F
Wind: 9 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Lewiston
High Temp: 58 °F
Low Temp: 39 °F
Mean Temp: 49 °F
Precipitation: 3.39"
Humidity: 74%
Dew Point: 39 °F
Wind: 10 mph
Pressure: 30.03 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Lewiston
High Temp: 46 °F
Low Temp: 29 °F
Mean Temp: 37 °F
Precipitation: 3.00"
Humidity: 71%
Dew Point: 28 °F
Wind: 10 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Lewiston
High Temp: 35 °F
Low Temp: 19 °F
Mean Temp: 28 °F
Precipitation: 2.88"
Humidity: 71%
Dew Point: 18 °F
Wind: 11 mph
Pressure: 30.01 "Hg
Visibility: 9 mi