S
M
T
W
T
F
S
31
65°
45°
1
69°
45°
2
71°
42°
3
72°
43°
4
68°
48°
5
67°
45°
6
61°
47°
7
61°
39°
8
72°
40°
9
58°
42°
10
59°
42°
11
70°
42°
12
74°
48°
13
75°
46°
14
79°
46°
15
83°
50°
16
85°
52°
17
75°
46°
18
77°
47°
19
75°
48°
20
74°
45°
21
77°
47°
22
72°
48°
23
66°
45°
24
69°
47°
25
72°
49°
26
77°
51°
27
78°
52°
28
78°
52°
29
77°
51°
30
78°
52°
1
74°
51°
2
80°
53°
3
82°
54°
4
81°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Harvard
Harvard's June 2026 forecast shows daily high temperatures ranging from 58° to 85°, with overnight lows between 42° and 54°. The average high for June is 75° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Harvard. See also: July | August | September.