S
M
T
W
T
F
S
26
69°
54°
27
72°
52°
28
73°
53°
29
74°
54°
30
74°
56°
31
75°
56°
1
75°
54°
2
72°
54°
3
71°
55°
4
74°
56°
5
76°
55°
6
72°
55°
7
71°
54°
8
71°
54°
9
73°
55°
10
71°
52°
11
71°
52°
12
72°
54°
13
74°
53°
14
71°
53°
15
75°
52°
16
74°
53°
17
75°
51°
18
75°
52°
19
74°
54°
20
75°
55°
21
76°
54°
22
75°
54°
23
74°
53°
24
74°
54°
25
73°
54°
26
74°
53°
27
73°
54°
28
74°
52°
29
70°
52°
30
69°
51°
31
69°
52°
1
68°
52°
2
72°
51°
3
70°
52°
4
71°
51°
5
67°
50°
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 67° to 76°, with overnight lows between 50° and 56°. The average high for August is 73° with an average low of 53°. 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.
