S
M
T
W
T
F
S
26
88°
69°
27
87°
68°
28
86°
67°
29
86°
67°
30
85°
66°
31
85°
67°
1
84°
67°
2
85°
66°
3
85°
67°
4
84°
67°
5
84°
66°
6
80°
65°
7
79°
65°
8
81°
64°
9
77°
63°
10
79°
66°
11
82°
66°
12
83°
58°
13
84°
57°
14
80°
66°
15
83°
59°
16
86°
55°
17
76°
54°
18
73°
53°
19
73°
53°
20
74°
54°
21
75°
55°
22
75°
55°
23
76°
58°
24
76°
62°
25
80°
54°
26
75°
53°
27
74°
53°
28
74°
56°
29
80°
61°
30
81°
60°
31
84°
52°
1
75°
51°
2
72°
57°
3
74°
61°
4
81°
52°
5
83°
49°
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 72° to 88°, with overnight lows between 49° and 69°. The average high for August is 80° 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 Mankato. See also: September | October | November.
