S
M
T
W
T
F
S
26
88°
64°
27
88°
65°
28
89°
62°
29
86°
63°
30
85°
63°
31
85°
65°
1
87°
68°
2
91°
65°
3
87°
64°
4
88°
63°
5
86°
63°
6
88°
64°
7
91°
66°
8
92°
68°
9
93°
65°
10
94°
63°
11
86°
64°
12
86°
63°
13
85°
64°
14
86°
69°
15
87°
63°
16
Hist. Avg.
88°
65°
17
Hist. Avg.
88°
65°
18
Hist. Avg.
88°
65°
19
Hist. Avg.
87°
65°
20
Hist. Avg.
87°
65°
21
Hist. Avg.
87°
64°
22
Hist. Avg.
87°
64°
23
Hist. Avg.
87°
64°
24
Hist. Avg.
87°
64°
25
Hist. Avg.
86°
64°
26
Hist. Avg.
86°
63°
27
Hist. Avg.
86°
63°
28
Hist. Avg.
86°
63°
29
Hist. Avg.
86°
62°
30
Hist. Avg.
85°
62°
31
Hist. Avg.
85°
62°
1
Hist. Avg.
85°
62°
2
Hist. Avg.
85°
61°
3
Hist. Avg.
84°
61°
4
Hist. Avg.
84°
61°
5
Hist. Avg.
84°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Beloit
Beloit's August 2026 forecast shows daily high temperatures ranging from 85° to 94°, with overnight lows between 62° and 69°. The average high for August is 88° with an average low of 64°. 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 Beloit. See also: September | October | November.