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7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Grafton, MA
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Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
19°
23
17°
24
12°
25
19°
26
24°
27
24°
28
21°
29
25°
30
26°
31
25°
Forecast
Friday, May 22, 2026
Day
19°
Feels 19
Wind
14 km/h NE
Gust
21 km/h
Humidity
28%
P.O.P
20%
Night
9°
Feels 9
Wind
9 km/h SE
Gust
14 km/h
Humidity
61%
P.O.P
30%
Historical Averages
May 22
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
May
Average Temperature
High
21°
Feels 21
Low
9°
Feels 8
Average Precipitation
11 Days
Rain amount
72.2mm
Snow amount
0cm