Monthly Historical AveragesChelmsford, MA
Average Temperature
High
21°
Feels 21
Low
9°
Feels 8
Average Precipitation
10 Days
59mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, May 24, 2026
Day
11°Feels 10
Wind
16 km/h E
Gust
24 km/h
Humidity
76%
P.O.P
90%
Rain
~15 mm
Night
11°Feels 9
Wind
16 km/h E
Gust
24 km/h
Humidity
100%
P.O.P
90%
Rain
~15 mm
Historical AveragesMay 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity