S
M
T
W
T
F
S
30
76°
61°
31
78°
62°
1
76°
61°
2
77°
57°
3
76°
62°
4
81°
60°
5
76°
58°
6
72°
56°
7
74°
55°
8
74°
56°
9
76°
59°
10
76°
55°
11
72°
58°
12
72°
60°
13
73°
57°
14
76°
60°
15
80°
61°
16
79°
61°
17
76°
60°
18
79°
61°
19
78°
60°
20
78°
61°
21
76°
60°
22
72°
59°
23
69°
58°
24
70°
58°
25
68°
58°
26
76°
57°
27
77°
48°
28
66°
47°
29
65°
47°
30
65°
56°
1
74°
53°
2
67°
45°
3
68°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Susquehannock State Park
Susquehannock State Park's September 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 42° and 62°. The average high for September is 74° with an average low of 57°. 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 Susquehannock State Park. See also: October | November | December.