S
M
T
W
T
F
S
31
75°
52°
1
79°
49°
2
79°
49°
3
70°
46°
4
66°
41°
5
64°
45°
6
66°
44°
7
67°
39°
8
73°
38°
9
77°
45°
10
81°
50°
11
81°
54°
12
84°
54°
13
87°
65°
14
87°
62°
15
89°
61°
16
89°
57°
17
87°
56°
18
87°
54°
19
83°
61°
20
77°
62°
21
81°
57°
22
82°
59°
23
78°
58°
24
72°
54°
25
79°
48°
26
87°
51°
27
87°
52°
28
86°
53°
29
89°
50°
30
86°
51°
1
82°
55°
2
86°
54°
3
89°
53°
4
89°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pecatonica
Pecatonica's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Pecatonica. See also: October | November | December.
