S
M
T
W
T
F
S
26
93°
71°
27
95°
72°
28
96°
73°
29
96°
73°
30
95°
72°
31
96°
73°
1
97°
72°
2
96°
73°
3
96°
72°
4
95°
72°
5
96°
73°
6
97°
71°
7
93°
69°
8
92°
70°
9
92°
71°
10
95°
73°
11
96°
72°
12
96°
72°
13
95°
70°
14
93°
69°
15
91°
69°
16
91°
68°
17
92°
66°
18
92°
66°
19
91°
65°
20
89°
66°
21
90°
64°
22
89°
57°
23
83°
57°
24
84°
58°
25
82°
57°
26
81°
58°
27
82°
61°
28
84°
64°
29
89°
64°
30
90°
63°
31
90°
63°
1
89°
62°
2
90°
63°
3
90°
63°
4
89°
62°
5
89°
61°
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 81° to 97°, with overnight lows between 57° and 73°. The average high for August is 91° with an average low of 67°. 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.
