S
M
T
W
T
F
S
30
78°
57°
31
71°
64°
1
84°
68°
2
74°
65°
3
84°
65°
4
80°
66°
5
76°
60°
6
76°
55°
7
76°
51°
8
78°
52°
9
79°
58°
10
83°
64°
11
75°
56°
12
78°
51°
13
81°
65°
14
70°
49°
15
72°
44°
16
80°
55°
17
77°
68°
18
77°
57°
19
71°
55°
20
66°
59°
21
67°
50°
22
61°
46°
23
63°
40°
24
62°
43°
25
63°
44°
26
64°
45°
27
64°
43°
28
65°
44°
29
67°
45°
30
70°
46°
1
66°
44°
2
67°
42°
3
61°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tunkhannock
Tunkhannock's September 2026 forecast shows daily high temperatures ranging from 61° to 70°, with overnight lows between 40° and 50°. The average high for September is 65° with an average low of 44°. 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 Tunkhannock. See also: October | November | December.