S
M
T
W
T
F
S
26
86°
59°
27
86°
60°
28
84°
57°
29
83°
58°
30
86°
56°
31
86°
58°
1
87°
58°
2
84°
56°
3
90°
57°
4
91°
59°
5
90°
58°
6
91°
58°
7
91°
58°
8
90°
57°
9
90°
57°
10
89°
55°
11
89°
55°
12
90°
57°
13
90°
57°
14
89°
56°
15
88°
58°
16
86°
56°
17
85°
56°
18
84°
55°
19
83°
55°
20
83°
58°
21
84°
54°
22
83°
54°
23
85°
55°
24
86°
55°
25
88°
57°
26
88°
56°
27
88°
56°
28
87°
55°
29
86°
54°
30
83°
53°
31
82°
52°
1
82°
53°
2
84°
54°
3
86°
55°
4
86°
55°
5
85°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Forest Lake
Forest Lake's August 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 52° and 60°. The average high for August is 87° with an average low of 56°. 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 Forest Lake. See also: September | October | November.