S
M
T
W
T
F
S
28
74°
48°
29
75°
39°
30
75°
37°
1
78°
42°
2
82°
47°
3
85°
50°
4
85°
51°
5
84°
54°
6
85°
53°
7
84°
54°
8
85°
55°
9
82°
54°
10
83°
53°
11
83°
54°
12
82°
54°
13
84°
55°
14
81°
51°
15
78°
53°
16
77°
53°
17
84°
56°
18
83°
55°
19
83°
56°
20
84°
56°
21
84°
57°
22
83°
56°
23
84°
57°
24
83°
57°
25
78°
56°
26
83°
56°
27
83°
55°
28
84°
57°
29
84°
56°
30
85°
57°
31
85°
57°
1
84°
58°
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 77° to 85°, with overnight lows between 42° and 58°. The average high for July is 83° with an average low of 54°. 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.