S
M
T
W
T
F
S
26
63°
41°
27
70°
35°
28
66°
35°
29
62°
44°
30
53°
44°
1
63°
41°
2
55°
44°
3
56°
33°
4
73°
38°
5
84°
51°
6
73°
52°
7
63°
40°
8
60°
37°
9
49°
33°
10
73°
48°
11
63°
40°
12
64°
36°
13
61°
39°
14
58°
48°
15
56°
43°
16
79°
41°
17
88°
60°
18
86°
54°
19
97°
61°
20
88°
66°
21
68°
45°
22
66°
40°
23
67°
49°
24
53°
50°
25
71°
54°
26
83°
61°
27
84°
58°
28
71°
49°
29
68°
49°
30
69°
42°
31
68°
50°
1
75°
52°
2
73°
52°
3
77°
53°
4
76°
53°
5
80°
52°
6
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harvard
Harvard's May 2026 forecast shows daily high temperatures ranging from 53° to 84°, with overnight lows between 42° and 61°. The average high for May is 72° with an average low of 52°. 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 Harvard. See also: June | July | August.
