S
M
T
W
T
F
S
26
82°
47°
27
87°
49°
28
85°
52°
29
73°
65°
30
76°
61°
31
84°
60°
1
88°
55°
2
90°
64°
3
81°
67°
4
89°
59°
5
89°
52°
6
93°
61°
7
91°
68°
8
84°
68°
9
89°
63°
10
85°
58°
11
83°
60°
12
82°
59°
13
80°
59°
14
79°
53°
15
79°
52°
16
77°
64°
17
76°
55°
18
79°
53°
19
80°
57°
20
77°
56°
21
78°
55°
22
74°
55°
23
75°
54°
24
74°
51°
25
73°
53°
26
77°
57°
27
79°
57°
28
70°
50°
29
71°
50°
30
76°
55°
31
75°
55°
1
71°
56°
2
77°
56°
3
77°
55°
4
76°
55°
5
75°
54°
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 70° to 82°, with overnight lows between 50° and 64°. The average high for August is 76° with an average low of 55°. 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.
