S
M
T
W
T
F
S
26
86°
67°
27
80°
62°
28
80°
64°
29
83°
66°
30
82°
62°
31
82°
60°
1
80°
61°
2
79°
59°
3
79°
60°
4
80°
59°
5
79°
60°
6
79°
60°
7
80°
61°
8
81°
65°
9
82°
66°
10
85°
64°
11
85°
60°
12
84°
68°
13
86°
60°
14
81°
58°
15
78°
60°
16
79°
60°
17
79°
61°
18
78°
58°
19
77°
57°
20
77°
57°
21
78°
58°
22
76°
57°
23
76°
57°
24
77°
58°
25
77°
64°
26
78°
65°
27
82°
66°
28
84°
63°
29
84°
55°
30
80°
58°
31
78°
57°
1
75°
62°
2
75°
58°
3
76°
53°
4
75°
58°
5
74°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Elmhurst
Elmhurst's August 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 53° and 68°. The average high for August is 80° with an average low of 61°. 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 Elmhurst. See also: September | October | November.