S
M
T
W
T
F
S
26
65°
33°
27
72°
35°
28
57°
36°
29
46°
32°
30
44°
33°
1
40°
29°
2
46°
26°
3
54°
27°
4
62°
38°
5
52°
35°
6
45°
27°
7
43°
31°
8
52°
27°
9
55°
34°
10
48°
28°
11
47°
27°
12
51°
27°
13
41°
38°
14
62°
36°
15
66°
37°
16
74°
45°
17
63°
44°
18
77°
47°
19
68°
48°
20
55°
35°
21
59°
28°
22
67°
36°
23
70°
48°
24
53°
47°
25
67°
47°
26
82°
47°
27
68°
46°
28
69°
46°
29
76°
44°
30
69°
41°
31
77°
42°
1
73°
46°
2
78°
49°
3
84°
44°
4
82°
51°
5
78°
56°
6
72°
56°
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 ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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.
