S
M
T
W
T
F
S
26
55°
35°
27
55°
37°
28
57°
45°
29
65°
48°
30
67°
47°
1
64°
44°
2
57°
42°
3
57°
41°
4
58°
38°
5
58°
48°
6
59°
48°
7
69°
49°
8
69°
47°
9
59°
43°
10
60°
49°
11
61°
47°
12
66°
49°
13
67°
50°
14
68°
50°
15
72°
54°
16
73°
52°
17
71°
50°
18
63°
49°
19
64°
49°
20
68°
54°
21
70°
53°
22
68°
46°
23
69°
47°
24
71°
46°
25
73°
49°
26
75°
51°
27
77°
52°
28
78°
53°
29
78°
52°
30
80°
52°
31
78°
54°
1
79°
56°
2
79°
51°
3
74°
59°
4
80°
60°
5
82°
60°
6
82°
61°
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 55° to 82°, with overnight lows between 35° and 61°. The average high for May is 68° with an average low of 49°. 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.