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Climate & Weather Averages in Lewiston, Maine, USA

Currently: 67 °F. Sunny. (Weather station: Wiscasset Airport, USA). See more current weather

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

Quick Climate Info

Hottest MonthJuly (70 °F avg)
Coldest MonthJanuary (21 °F avg)
Wettest MonthOctober (3.39" avg)
Windiest MonthMarch (13 mph avg)
Annual precip.32.59" (per year)

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