S
M
T
W
T
F
S
30
76°
51°
31
79°
55°
1
81°
49°
2
74°
50°
3
75°
52°
4
78°
57°
5
80°
57°
6
81°
56°
7
76°
56°
8
74°
55°
9
78°
56°
10
79°
55°
11
73°
55°
12
77°
54°
13
74°
52°
14
71°
46°
15
70°
47°
16
70°
46°
17
71°
52°
18
75°
51°
19
77°
52°
20
78°
53°
21
70°
47°
22
75°
50°
23
69°
52°
24
75°
46°
25
72°
42°
26
66°
42°
27
Hist. Avg.
70°
46°
28
Hist. Avg.
70°
45°
29
Hist. Avg.
69°
45°
30
Hist. Avg.
69°
45°
1
Hist. Avg.
68°
44°
2
Hist. Avg.
68°
44°
3
Hist. Avg.
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Connoquenessing
Connoquenessing's September 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 42° and 57°. The average high for September is 75° with an average low of 51°. 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 Connoquenessing. See also: October | November | December.