S
M
T
W
T
F
S
26
97°
73°
27
91°
75°
28
91°
72°
29
90°
70°
30
82°
72°
31
72°
63°
1
82°
63°
2
84°
36°
3
84°
68°
4
72°
59°
5
79°
52°
6
81°
54°
7
77°
55°
8
82°
52°
9
88°
66°
10
82°
66°
11
82°
70°
12
86°
70°
13
79°
68°
14
79°
66°
15
84°
72°
16
79°
63°
17
84°
55°
18
84°
64°
19
78°
58°
20
83°
60°
21
83°
59°
22
81°
53°
23
75°
58°
24
82°
60°
25
85°
59°
26
82°
58°
27
81°
56°
28
82°
61°
29
81°
58°
30
78°
56°
31
79°
57°
1
77°
54°
2
70°
54°
3
70°
51°
4
74°
58°
5
73°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Heron Lake
Heron Lake's August 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 51° and 61°. The average high for August is 79° with an average low of 57°. 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 Heron Lake. See also: September | October | November.
