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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Marlborough, CT
Content continues below
May
Average Temperature
High
21°
Feels 21
Low
9°
Feels 8
Average Precipitation
12 Days
Rain amount
89.3mm
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
32°
20
31°
21
19°
22
19°
23
13°
24
13°
25
19°
26
21°
27
22°
28
21°
29
22°
30
22°
31
22°
Forecast
Tuesday, May 19, 2026
Day
32°
Feels 32
Wind
21 km/h SW
Gust
32 km/h
Humidity
41%
P.O.P
30%
Night
22°
Feels 22
Wind
19 km/h S
Gust
29 km/h
Humidity
65%
P.O.P
30%
Historical Averages
May 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.