Annual Weather Averages Near Eastham
Averages are for Chatham Municipal Airport, which is 10 miles from Eastham.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Eastham
High Temp: 78 °F
Low Temp: 26 °F
Mean Temp: 51 °F
Precipitation: 3.69"
Humidity: 75%
Dew Point: 43 °F
Wind: 12 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Eastham
High Temp: 39 °F
Low Temp: 26 °F
Mean Temp: 32 °F
Precipitation: 3.73"
Humidity: 72%
Dew Point: 24 °F
Wind: 14 mph
Pressure: 30.05 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Eastham
High Temp: 40 °F
Low Temp: 26 °F
Mean Temp: 33 °F
Precipitation: 3.75"
Humidity: 71%
Dew Point: 24 °F
Wind: 14 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Eastham
High Temp: 44 °F
Low Temp: 31 °F
Mean Temp: 38 °F
Precipitation: 4.36"
Humidity: 70%
Dew Point: 29 °F
Wind: 15 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Eastham
High Temp: 52 °F
Low Temp: 39 °F
Mean Temp: 46 °F
Precipitation: 3.90"
Humidity: 72%
Dew Point: 37 °F
Wind: 14 mph
Pressure: 30.01 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Eastham
High Temp: 61 °F
Low Temp: 48 °F
Mean Temp: 55 °F
Precipitation: 3.40"
Humidity: 75%
Dew Point: 47 °F
Wind: 13 mph
Pressure: 30.01 "Hg
Visibility: 8 mi
June Climate & Weather Averages in Eastham
High Temp: 71 °F
Low Temp: 57 °F
Mean Temp: 64 °F
Precipitation: 2.88"
Humidity: 78%
Dew Point: 57 °F
Wind: 12 mph
Pressure: 29.97 "Hg
Visibility: 8 mi
July Climate & Weather Averages in Eastham
High Temp: 78 °F
Low Temp: 64 °F
Mean Temp: 71 °F
Precipitation: 2.56"
Humidity: 79%
Dew Point: 64 °F
Wind: 11 mph
Pressure: 29.97 "Hg
Visibility: 8 mi
August Climate & Weather Averages in Eastham
High Temp: 77 °F
Low Temp: 64 °F
Mean Temp: 70 °F
Precipitation: 2.97"
Humidity: 79%
Dew Point: 64 °F
Wind: 10 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Eastham
High Temp: 71 °F
Low Temp: 58 °F
Mean Temp: 64 °F
Precipitation: 3.94"
Humidity: 79%
Dew Point: 58 °F
Wind: 11 mph
Pressure: 30.07 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Eastham
High Temp: 62 °F
Low Temp: 48 °F
Mean Temp: 55 °F
Precipitation: 4.17"
Humidity: 77%
Dew Point: 48 °F
Wind: 11 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Eastham
High Temp: 52 °F
Low Temp: 39 °F
Mean Temp: 46 °F
Precipitation: 4.10"
Humidity: 74%
Dew Point: 38 °F
Wind: 12 mph
Pressure: 30.10 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Eastham
High Temp: 44 °F
Low Temp: 31 °F
Mean Temp: 38 °F
Precipitation: 4.58"
Humidity: 74%
Dew Point: 30 °F
Wind: 12 mph
Pressure: 30.08 "Hg
Visibility: 9 mi