S
M
T
W
T
F
S
26
91°
73°
27
90°
77°
28
86°
70°
29
87°
69°
30
82°
68°
31
71°
63°
1
82°
61°
2
81°
62°
3
83°
65°
4
74°
61°
5
76°
56°
6
78°
55°
7
75°
60°
8
77°
55°
9
84°
65°
10
82°
67°
11
84°
70°
12
85°
69°
13
76°
65°
14
74°
67°
15
81°
66°
16
78°
57°
17
77°
62°
18
81°
64°
19
79°
60°
20
80°
62°
21
81°
61°
22
79°
60°
23
79°
59°
24
75°
59°
25
79°
58°
26
83°
64°
27
84°
62°
28
78°
60°
29
83°
63°
30
84°
64°
31
85°
64°
1
84°
63°
2
83°
63°
3
84°
62°
4
84°
63°
5
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mankato
Mankato's August 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 57° and 69°. The average high for August is 81° with an average low of 62°. 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 Mankato. See also: September | October | November.
