S
M
T
W
T
F
S
26
61°
44°
27
66°
45°
28
64°
49°
29
55°
41°
30
53°
36°
1
48°
37°
2
58°
34°
3
67°
46°
4
77°
49°
5
57°
43°
6
54°
37°
7
58°
35°
8
68°
36°
9
68°
47°
10
62°
38°
11
58°
38°
12
72°
38°
13
62°
47°
14
72°
41°
15
80°
59°
16
83°
59°
17
73°
54°
18
82°
58°
19
73°
54°
20
59°
46°
21
54°
44°
22
63°
46°
23
79°
52°
24
78°
55°
25
85°
58°
26
86°
57°
27
84°
55°
28
78°
50°
29
78°
52°
30
75°
53°
31
76°
52°
1
74°
55°
2
76°
54°
3
78°
57°
4
77°
57°
5
79°
58°
6
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cambridge
Cambridge's May 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 50° and 58°. The average high for May is 79° with an average low of 55°. 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 Cambridge. See also: June | July | August.