S
M
T
W
T
F
S
26
77°
57°
27
77°
58°
28
76°
57°
29
76°
58°
30
77°
58°
31
78°
59°
1
78°
64°
2
79°
59°
3
80°
59°
4
81°
58°
5
81°
61°
6
83°
66°
7
85°
67°
8
85°
66°
9
82°
61°
10
83°
58°
11
77°
57°
12
78°
56°
13
77°
58°
14
78°
65°
15
78°
63°
16
Hist. Avg.
82°
63°
17
Hist. Avg.
82°
63°
18
Hist. Avg.
82°
63°
19
Hist. Avg.
82°
63°
20
Hist. Avg.
82°
63°
21
Hist. Avg.
82°
63°
22
Hist. Avg.
82°
63°
23
Hist. Avg.
81°
62°
24
Hist. Avg.
81°
62°
25
Hist. Avg.
81°
62°
26
Hist. Avg.
81°
62°
27
Hist. Avg.
81°
62°
28
Hist. Avg.
81°
62°
29
Hist. Avg.
80°
61°
30
Hist. Avg.
80°
61°
31
Hist. Avg.
80°
61°
1
Hist. Avg.
80°
60°
2
Hist. Avg.
80°
60°
3
Hist. Avg.
79°
60°
4
Hist. Avg.
79°
60°
5
Hist. Avg.
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Winona
Winona's August 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 56° and 67°. The average high for August is 79° with an average low of 60°. 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 Winona. See also: September | October | November.
