S
M
T
W
T
F
S
26
61°
37°
27
68°
34°
28
62°
38°
29
59°
45°
30
55°
40°
1
57°
33°
2
54°
38°
3
55°
32°
4
69°
31°
5
79°
46°
6
66°
45°
7
58°
40°
8
56°
36°
9
53°
42°
10
64°
46°
11
59°
39°
12
62°
33°
13
59°
44°
14
59°
45°
15
62°
45°
16
78°
40°
17
84°
56°
18
91°
58°
19
89°
63°
20
82°
55°
21
63°
48°
22
61°
42°
23
N/A
24
55°
52°
25
68°
53°
26
77°
55°
27
76°
55°
28
74°
46°
29
69°
44°
30
68°
45°
31
69°
46°
1
72°
46°
2
70°
47°
3
71°
50°
4
70°
51°
5
73°
53°
6
74°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Harvard
Harvard's May 2026 forecast shows daily high temperatures ranging from 55° to 77°, with overnight lows between 44° and 55°. The average high for May is 70° 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 Harvard. See also: June | July | August.
