Annual Weather Averages in Knapp State Airport
Knapp State Airport is 34 miles from Town of Waltham, so the actual climate in Town of Waltham can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Town of Waltham
High Temp: 78 °F
Low Temp: 9 °F
Mean Temp: 43 °F
Precipitation: 3.25"
Humidity: 73%
Dew Point: 35 °F
Wind: 9 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Town of Waltham
High Temp: 26 °F
Low Temp: 9 °F
Mean Temp: 17 °F
Precipitation: 2.39"
Humidity: 76%
Dew Point: 11 °F
Wind: 10 mph
Pressure: 30.08 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Town of Waltham
High Temp: 29 °F
Low Temp: 10 °F
Mean Temp: 20 °F
Precipitation: 2.16"
Humidity: 71%
Dew Point: 12 °F
Wind: 10 mph
Pressure: 30.07 "Hg
Visibility: 8 mi
March Climate & Weather Averages in Town of Waltham
High Temp: 38 °F
Low Temp: 19 °F
Mean Temp: 28 °F
Precipitation: 2.45"
Humidity: 68%
Dew Point: 19 °F
Wind: 11 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Town of Waltham
High Temp: 51 °F
Low Temp: 31 °F
Mean Temp: 41 °F
Precipitation: 3.09"
Humidity: 62%
Dew Point: 29 °F
Wind: 11 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Town of Waltham
High Temp: 65 °F
Low Temp: 42 °F
Mean Temp: 54 °F
Precipitation: 3.51"
Humidity: 65%
Dew Point: 42 °F
Wind: 10 mph
Pressure: 30.03 "Hg
Visibility: 10 mi
June Climate & Weather Averages in Town of Waltham
High Temp: 74 °F
Low Temp: 52 °F
Mean Temp: 63 °F
Precipitation: 4.20"
Humidity: 72%
Dew Point: 53 °F
Wind: 8 mph
Pressure: 29.98 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Town of Waltham
High Temp: 78 °F
Low Temp: 56 °F
Mean Temp: 67 °F
Precipitation: 4.46"
Humidity: 74%
Dew Point: 58 °F
Wind: 7 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Town of Waltham
High Temp: 77 °F
Low Temp: 55 °F
Mean Temp: 66 °F
Precipitation: 3.78"
Humidity: 76%
Dew Point: 57 °F
Wind: 6 mph
Pressure: 30.04 "Hg
Visibility: 8 mi
September Climate & Weather Averages in Town of Waltham
High Temp: 69 °F
Low Temp: 47 °F
Mean Temp: 58 °F
Precipitation: 3.33"
Humidity: 77%
Dew Point: 51 °F
Wind: 7 mph
Pressure: 30.10 "Hg
Visibility: 8 mi
October Climate & Weather Averages in Town of Waltham
High Temp: 56 °F
Low Temp: 37 °F
Mean Temp: 46 °F
Precipitation: 3.80"
Humidity: 75%
Dew Point: 38 °F
Wind: 9 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Town of Waltham
High Temp: 43 °F
Low Temp: 27 °F
Mean Temp: 35 °F
Precipitation: 2.89"
Humidity: 75%
Dew Point: 27 °F
Wind: 10 mph
Pressure: 30.12 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Town of Waltham
High Temp: 32 °F
Low Temp: 17 °F
Mean Temp: 24 °F
Precipitation: 2.97"
Humidity: 79%
Dew Point: 19 °F
Wind: 9 mph
Pressure: 30.11 "Hg
Visibility: 8 mi