S
M
T
W
T
F
S
26
66°
48°
27
70°
47°
28
70°
46°
29
68°
47°
30
66°
45°
1
68°
50°
2
68°
46°
3
69°
49°
4
71°
51°
5
72°
52°
6
73°
53°
7
72°
54°
8
73°
53°
9
74°
52°
10
67°
52°
11
64°
53°
12
70°
54°
13
74°
53°
14
73°
53°
15
72°
54°
16
75°
56°
17
76°
57°
18
77°
51°
19
77°
49°
20
69°
48°
21
67°
50°
22
68°
49°
23
67°
50°
24
70°
54°
25
72°
59°
26
76°
57°
27
79°
59°
28
73°
59°
29
80°
57°
30
81°
51°
31
72°
57°
1
77°
53°
2
81°
59°
3
83°
61°
4
82°
53°
5
82°
52°
6
73°
52°
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 64° to 83°, with overnight lows between 45° and 61°. The average high for May is 73° with an average low of 53°. 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.