S
M
T
W
T
F
S
28
62°
46°
29
56°
46°
30
73°
52°
1
77°
51°
2
79°
52°
3
80°
52°
4
85°
54°
5
84°
49°
6
80°
58°
7
85°
59°
8
90°
57°
9
87°
58°
10
86°
59°
11
86°
55°
12
87°
57°
13
89°
58°
14
91°
57°
15
97°
63°
16
80°
57°
17
82°
56°
18
81°
55°
19
85°
56°
20
89°
58°
21
89°
58°
22
88°
57°
23
89°
58°
24
87°
57°
25
81°
58°
26
81°
56°
27
82°
57°
28
81°
56°
29
81°
56°
30
80°
57°
31
80°
54°
1
81°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Sun Prairie
Sun Prairie's July 2026 forecast shows daily high temperatures ranging from 79° to 97°, with overnight lows between 49° and 63°. The average high for July is 85° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Sun Prairie. See also: August | September | October.