S
M
T
W
T
F
S
26
91°
71°
27
92°
71°
28
92°
70°
29
93°
71°
30
92°
70°
31
91°
70°
1
90°
69°
2
84°
65°
3
83°
68°
4
83°
68°
5
84°
67°
6
85°
68°
7
86°
68°
8
86°
67°
9
87°
68°
10
88°
69°
11
86°
68°
12
87°
68°
13
89°
67°
14
93°
67°
15
93°
67°
16
90°
65°
17
89°
66°
18
88°
67°
19
89°
60°
20
84°
59°
21
82°
58°
22
81°
59°
23
82°
59°
24
83°
60°
25
83°
65°
26
84°
60°
27
89°
65°
28
89°
65°
29
91°
64°
30
91°
64°
31
88°
62°
1
82°
64°
2
83°
58°
3
80°
57°
4
81°
61°
5
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Effingham
Effingham's August 2026 forecast shows daily high temperatures ranging from 80° to 93°, with overnight lows between 57° and 71°. The average high for August is 87° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Effingham. See also: September | October | November.
