S
M
T
W
T
F
S
30
71°
55°
31
77°
58°
1
71°
59°
2
75°
57°
3
73°
54°
4
69°
49°
5
70°
51°
6
72°
56°
7
73°
54°
8
71°
52°
9
67°
49°
10
67°
47°
11
67°
42°
12
64°
45°
13
67°
46°
14
66°
45°
15
63°
44°
16
64°
43°
17
66°
42°
18
64°
43°
19
63°
43°
20
62°
42°
21
63°
42°
22
65°
50°
23
69°
46°
24
69°
49°
25
70°
51°
26
73°
51°
27
72°
45°
28
68°
46°
29
61°
41°
30
60°
43°
1
58°
48°
2
68°
49°
3
71°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Potsdam
Potsdam's September 2026 forecast shows daily high temperatures ranging from 58° to 77°, with overnight lows between 37° and 59°. The average high for September is 68° 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 September weather will actually feel in Potsdam. See also: October | November | December.
