S
M
T
W
T
F
S
27
73°
42°
28
72°
41°
29
65°
45°
30
67°
50°
1
67°
49°
2
71°
51°
3
74°
50°
4
74°
49°
5
73°
50°
6
74°
50°
7
73°
41°
8
71°
38°
9
60°
39°
10
59°
38°
11
60°
40°
12
60°
46°
13
65°
49°
14
69°
44°
15
71°
40°
16
67°
39°
17
66°
35°
18
57°
37°
19
58°
33°
20
55°
42°
21
55°
42°
22
60°
41°
23
64°
36°
24
55°
31°
25
53°
34°
26
51°
40°
27
52°
31°
28
52°
29°
29
51°
28°
30
47°
30°
31
58°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Harvard
Harvard's October 2026 forecast shows daily high temperatures ranging from 47° to 74°, with overnight lows between 28° and 51°. The average high for October is 63° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Harvard. See also: November | December | January.