S
M
T
W
T
F
S
26
84°
65°
27
84°
66°
28
86°
65°
29
88°
66°
30
87°
66°
31
87°
65°
1
86°
62°
2
82°
58°
3
78°
56°
4
77°
57°
5
78°
57°
6
80°
58°
7
82°
60°
8
85°
62°
9
86°
61°
10
85°
64°
11
86°
65°
12
85°
58°
13
Hist. Avg.
82°
62°
14
Hist. Avg.
82°
62°
15
Hist. Avg.
82°
62°
16
Hist. Avg.
82°
62°
17
Hist. Avg.
82°
62°
18
Hist. Avg.
82°
62°
19
Hist. Avg.
82°
62°
20
Hist. Avg.
82°
62°
21
Hist. Avg.
82°
61°
22
Hist. Avg.
82°
61°
23
Hist. Avg.
81°
61°
24
Hist. Avg.
81°
61°
25
Hist. Avg.
81°
61°
26
Hist. Avg.
81°
60°
27
Hist. Avg.
81°
60°
28
Hist. Avg.
81°
60°
29
Hist. Avg.
80°
60°
30
Hist. Avg.
80°
59°
31
Hist. Avg.
80°
59°
1
Hist. Avg.
80°
59°
2
Hist. Avg.
80°
59°
3
Hist. Avg.
79°
58°
4
Hist. Avg.
79°
58°
5
Hist. Avg.
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Belvidere
Belvidere's August 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 56° and 66°. The average high for August is 84° with an average low of 62°. 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 Belvidere. See also: September | October | November.
