S
M
T
W
T
F
S
26
73°
51°
27
74°
54°
28
75°
58°
29
77°
59°
30
76°
58°
31
81°
60°
1
82°
59°
2
82°
60°
3
83°
60°
4
82°
56°
5
80°
53°
6
73°
52°
7
72°
51°
8
74°
52°
9
76°
52°
10
77°
53°
11
77°
55°
12
80°
58°
13
78°
59°
14
79°
60°
15
80°
59°
16
81°
56°
17
78°
58°
18
73°
52°
19
73°
53°
20
76°
57°
21
76°
58°
22
74°
57°
23
74°
53°
24
73°
54°
25
78°
57°
26
75°
50°
27
72°
55°
28
76°
58°
29
76°
58°
30
77°
57°
31
76°
56°
1
78°
55°
2
76°
55°
3
77°
54°
4
75°
54°
5
76°
54°
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 72° to 83°, with overnight lows between 50° and 60°. The average high for August is 77° with an average low of 56°. 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.