S
M
T
W
T
F
S
30
69°
45°
31
67°
47°
1
67°
48°
2
68°
45°
3
65°
49°
4
68°
54°
5
71°
47°
6
68°
45°
7
66°
44°
8
63°
43°
9
62°
48°
10
67°
46°
11
66°
46°
12
63°
42°
13
71°
49°
14
62°
39°
15
61°
40°
16
Hist. Avg.
66°
43°
17
Hist. Avg.
66°
43°
18
Hist. Avg.
66°
42°
19
Hist. Avg.
65°
42°
20
Hist. Avg.
65°
41°
21
Hist. Avg.
64°
41°
22
Hist. Avg.
64°
40°
23
Hist. Avg.
63°
40°
24
Hist. Avg.
63°
40°
25
Hist. Avg.
62°
39°
26
Hist. Avg.
62°
39°
27
Hist. Avg.
61°
38°
28
Hist. Avg.
61°
38°
29
Hist. Avg.
60°
38°
30
Hist. Avg.
60°
37°
1
Hist. Avg.
59°
37°
2
Hist. Avg.
59°
36°
3
Hist. Avg.
58°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Vassar
Vassar's September 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 39° and 54°. The average high for September is 66° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Vassar. See also: October | November | December.