S
M
T
W
T
F
S
26
61°
50°
27
64°
49°
28
68°
44°
29
74°
50°
30
71°
58°
1
67°
50°
2
60°
51°
3
63°
50°
4
79°
52°
5
83°
60°
6
77°
63°
7
69°
51°
8
71°
50°
9
78°
58°
10
84°
60°
11
69°
46°
12
75°
47°
13
77°
55°
14
71°
56°
15
74°
50°
16
84°
57°
17
91°
65°
18
93°
71°
19
94°
72°
20
93°
71°
21
89°
65°
22
65°
59°
23
65°
59°
24
74°
62°
25
83°
69°
26
81°
71°
27
88°
70°
28
83°
58°
29
79°
63°
30
74°
56°
31
72°
57°
1
79°
57°
2
77°
56°
3
76°
57°
4
79°
59°
5
82°
65°
6
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chelsea
Chelsea's May 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 56° and 65°. The average high for May is 79° with an average low of 59°. 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 Chelsea. See also: June | July | August.