S
M
T
W
T
F
S
28
89°
65°
29
86°
63°
30
90°
66°
1
89°
63°
2
88°
68°
3
89°
68°
4
86°
67°
5
87°
67°
6
91°
69°
7
92°
69°
8
92°
68°
9
93°
69°
10
92°
69°
11
90°
68°
12
93°
69°
13
93°
68°
14
88°
67°
15
87°
68°
16
90°
68°
17
90°
66°
18
86°
66°
19
86°
64°
20
87°
63°
21
87°
62°
22
88°
63°
23
87°
65°
24
88°
65°
25
89°
67°
26
91°
68°
27
90°
61°
28
89°
62°
29
90°
66°
30
92°
67°
31
92°
69°
1
94°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Winona
Winona's July 2026 forecast shows daily high temperatures ranging from 86° to 94°, with overnight lows between 61° and 69°. The average high for July is 89° with an average low of 66°. 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 Winona. See also: August | September | October.