S
M
T
W
T
F
S
26
79°
58°
27
74°
58°
28
79°
59°
29
80°
59°
30
80°
58°
31
81°
60°
1
82°
59°
2
81°
60°
3
81°
58°
4
77°
57°
5
76°
58°
6
81°
58°
7
80°
56°
8
73°
53°
9
74°
52°
10
74°
57°
11
75°
58°
12
76°
58°
13
81°
60°
14
82°
58°
15
80°
57°
16
74°
56°
17
74°
50°
18
79°
56°
19
78°
56°
20
80°
55°
21
81°
54°
22
76°
53°
23
74°
52°
24
74°
50°
25
77°
51°
26
77°
51°
27
76°
48°
28
78°
52°
29
79°
54°
30
78°
53°
31
79°
54°
1
79°
53°
2
78°
46°
3
75°
43°
4
69°
47°
5
70°
53°
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 69° to 82°, with overnight lows between 43° and 60°. The average high for August is 77° 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 Elmhurst. See also: September | October | November.