S
M
T
W
T
F
S
26
63°
41°
27
70°
39°
28
61°
45°
29
64°
45°
30
66°
45°
1
73°
50°
2
72°
48°
3
66°
54°
4
59°
50°
5
61°
48°
6
54°
41°
7
57°
41°
8
64°
41°
9
70°
43°
10
55°
36°
11
52°
32°
12
57°
32°
13
55°
41°
14
54°
41°
15
55°
41°
16
57°
37°
17
63°
46°
18
57°
41°
19
66°
50°
20
68°
54°
21
73°
50°
22
82°
55°
23
82°
59°
24
81°
55°
25
88°
56°
26
92°
54°
27
68°
51°
28
75°
57°
29
80°
56°
30
79°
58°
31
75°
56°
1
72°
57°
2
70°
54°
3
70°
54°
4
69°
53°
5
68°
54°
6
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chelmsford
Chelmsford's May 2026 forecast shows daily high temperatures ranging from 64° to 92°, with overnight lows between 45° and 58°. The average high for May is 75° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Chelmsford. See also: June | July | August.
