S
M
T
W
T
F
S
28
96°
79°
29
97°
80°
30
95°
77°
1
96°
74°
2
91°
74°
3
92°
76°
4
94°
75°
5
92°
74°
6
90°
72°
7
94°
73°
8
97°
74°
9
98°
76°
10
96°
73°
11
95°
74°
12
97°
73°
13
99°
75°
14
98°
75°
15
94°
71°
16
97°
75°
17
97°
75°
18
98°
75°
19
98°
74°
20
97°
75°
21
98°
75°
22
98°
74°
23
97°
76°
24
98°
76°
25
98°
75°
26
97°
76°
27
98°
76°
28
97°
75°
29
98°
75°
30
99°
76°
31
99°
76°
1
98°
75°
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 90° to 99°, with overnight lows between 71° and 76°. The average high for July is 96° with an average low of 75°. 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.