S
M
T
W
T
F
S
30
69°
51°
31
69°
52°
1
68°
52°
2
72°
51°
3
70°
52°
4
71°
51°
5
67°
50°
6
67°
49°
7
68°
47°
8
66°
52°
9
67°
51°
10
70°
48°
11
67°
51°
12
68°
50°
13
66°
50°
14
65°
51°
15
68°
50°
16
68°
46°
17
71°
51°
18
69°
50°
19
Hist. Avg.
64°
51°
20
Hist. Avg.
63°
51°
21
Hist. Avg.
63°
50°
22
Hist. Avg.
63°
50°
23
Hist. Avg.
63°
50°
24
Hist. Avg.
62°
50°
25
Hist. Avg.
62°
50°
26
Hist. Avg.
62°
49°
27
Hist. Avg.
62°
49°
28
Hist. Avg.
62°
49°
29
Hist. Avg.
61°
49°
30
Hist. Avg.
61°
49°
1
Hist. Avg.
61°
48°
2
Hist. Avg.
61°
48°
3
Hist. Avg.
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Effingham
Effingham's September 2026 forecast shows daily high temperatures ranging from 65° to 72°, with overnight lows between 46° and 52°. The average high for September is 68° with an average low of 50°. 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 Effingham. See also: October | November | December.
