Monthly Historical AveragesGrafton, MA
Average Temperature
High
21°
Feels 21
Low
9°
Feels 8
Average Precipitation
11 Days
72.2mm
0cm
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Daily Historical Averages
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M
T
W
T
F
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ForecastThursday, May 21, 2026
Day
20°Feels 20
Wind
14 km/h N
Gust
21 km/h
Humidity
32%
P.O.P
40%
Rain
<1 mm
Night
8°Feels 6
Wind
13 km/h N
Gust
20 km/h
Humidity
57%
P.O.P
30%
Historical AveragesMay 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity