S
M
T
W
T
F
S
30
80°
64°
31
78°
57°
1
74°
57°
2
73°
53°
3
75°
54°
4
78°
62°
5
69°
57°
6
69°
52°
7
71°
51°
8
83°
59°
9
70°
58°
10
67°
53°
11
68°
49°
12
73°
51°
13
70°
59°
14
67°
52°
15
78°
47°
16
67°
57°
17
67°
51°
18
70°
55°
19
70°
50°
20
71°
54°
21
64°
54°
22
66°
48°
23
N/A
24
61°
54°
25
60°
49°
26
72°
39°
27
N/A
28
77°
53°
29
78°
53°
30
75°
53°
1
77°
57°
2
64°
50°
3
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Potsdam
Potsdam's September 2026 forecast shows daily high temperatures ranging from 64° to 68°, with overnight lows between 50° and 50°. The average high for September is 66° with an average low of 50°. 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 Potsdam. See also: October | November | December.
