S
M
T
W
T
F
S
26
52°
41°
27
66°
37°
28
63°
37°
29
68°
46°
30
68°
48°
1
63°
48°
2
57°
45°
3
59°
41°
4
73°
43°
5
79°
61°
6
70°
61°
7
64°
43°
8
66°
43°
9
72°
57°
10
82°
54°
11
63°
43°
12
68°
41°
13
72°
57°
14
63°
55°
15
68°
52°
16
79°
52°
17
84°
59°
18
91°
64°
19
91°
68°
20
91°
70°
21
73°
56°
22
59°
55°
23
60°
57°
24
72°
61°
25
73°
62°
26
78°
61°
27
78°
61°
28
79°
58°
29
77°
57°
30
78°
60°
31
81°
62°
1
78°
60°
2
77°
58°
3
75°
68°
4
84°
62°
5
84°
63°
6
83°
63°
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 59° to 84°, with overnight lows between 55° and 68°. The average high for May is 76° with an average low of 60°. 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.