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Precipitation
Temperature
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Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Bolton, MA
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May
Average Temperature
High
21°
Feels 21
Low
9°
Feels 8
Average Precipitation
11 Days
Rain amount
66.4mm
Snow amount
0cm
Content continues below
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
23
24
25
26
27
28
29
30
31
20°
Forecast
Sunday, May 31, 2026
Day
20°
Feels 20
Wind
13 km/h NW
Gust
39 km/h
Humidity
37%
P.O.P
70%
Rain
~1 mm
Night
8°
Feels 6
Wind
11 km/h W
Gust
28 km/h
Humidity
100%
P.O.P
70%
Rain
~5 mm
Historical Averages
May 31
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.