S
M
T
W
T
F
S
26
80°
57°
27
79°
59°
28
79°
58°
29
80°
62°
30
79°
61°
31
79°
63°
1
80°
62°
2
79°
60°
3
79°
60°
4
80°
58°
5
78°
57°
6
79°
58°
7
79°
58°
8
81°
57°
9
80°
56°
10
78°
57°
11
80°
58°
12
78°
57°
13
77°
56°
14
77°
57°
15
78°
57°
16
80°
56°
17
84°
58°
18
84°
57°
19
83°
63°
20
83°
62°
21
79°
62°
22
83°
61°
23
83°
54°
24
76°
59°
25
76°
62°
26
81°
58°
27
82°
54°
28
77°
61°
29
78°
62°
30
82°
54°
31
79°
52°
1
74°
51°
2
73°
52°
3
Hist. Avg.
77°
54°
4
Hist. Avg.
77°
54°
5
Hist. Avg.
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fox River
Fox River's August 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 51° and 63°. The average high for August is 79° with an average low of 58°. 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 Fox River. See also: September | October | November.