S
M
T
W
T
F
S
30
80°
62°
31
78°
61°
1
76°
58°
2
77°
57°
3
76°
62°
4
75°
60°
5
75°
59°
6
76°
59°
7
78°
58°
8
80°
59°
9
79°
59°
10
81°
62°
11
81°
62°
12
80°
63°
13
81°
62°
14
80°
62°
15
79°
61°
16
74°
59°
17
74°
56°
18
75°
54°
19
78°
59°
20
78°
57°
21
73°
54°
22
71°
52°
23
75°
55°
24
78°
58°
25
78°
58°
26
77°
57°
27
75°
56°
28
77°
58°
29
76°
58°
30
70°
50°
1
71°
51°
2
66°
48°
3
65°
43°
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 43° and 63°. The average high for September is 76° 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.