S
M
T
W
T
F
S
26
80°
58°
27
78°
57°
28
79°
58°
29
80°
62°
30
81°
65°
31
82°
62°
1
81°
61°
2
83°
63°
3
86°
56°
4
81°
57°
5
79°
57°
6
80°
58°
7
81°
61°
8
79°
62°
9
86°
63°
10
80°
61°
11
80°
61°
12
Hist. Avg.
83°
66°
13
Hist. Avg.
83°
66°
14
Hist. Avg.
83°
66°
15
Hist. Avg.
83°
66°
16
Hist. Avg.
83°
65°
17
Hist. Avg.
83°
65°
18
Hist. Avg.
82°
65°
19
Hist. Avg.
82°
65°
20
Hist. Avg.
82°
65°
21
Hist. Avg.
82°
65°
22
Hist. Avg.
82°
65°
23
Hist. Avg.
82°
64°
24
Hist. Avg.
82°
64°
25
Hist. Avg.
82°
64°
26
Hist. Avg.
81°
64°
27
Hist. Avg.
81°
64°
28
Hist. Avg.
81°
63°
29
Hist. Avg.
81°
63°
30
Hist. Avg.
81°
63°
31
Hist. Avg.
80°
63°
1
Hist. Avg.
80°
62°
2
Hist. Avg.
80°
62°
3
Hist. Avg.
80°
62°
4
Hist. Avg.
80°
62°
5
Hist. Avg.
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Downers Grove
Downers Grove's August 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 56° and 65°. The average high for August is 81° with an average low of 60°. 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 Downers Grove. See also: September | October | November.
