S
M
T
W
T
F
S
26
85°
67°
27
85°
67°
28
84°
66°
29
86°
67°
30
84°
66°
31
84°
65°
1
78°
62°
2
77°
61°
3
78°
65°
4
80°
66°
5
81°
66°
6
84°
65°
7
84°
66°
8
83°
66°
9
84°
65°
10
84°
66°
11
83°
66°
12
85°
65°
13
84°
67°
14
87°
58°
15
84°
59°
16
79°
61°
17
80°
62°
18
84°
60°
19
85°
58°
20
78°
55°
21
76°
56°
22
77°
57°
23
77°
57°
24
78°
56°
25
77°
61°
26
77°
59°
27
84°
58°
28
83°
56°
29
76°
55°
30
75°
55°
31
75°
56°
1
74°
55°
2
74°
54°
3
75°
54°
4
75°
55°
5
76°
57°
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 74° to 87°, with overnight lows between 54° and 67°. The average high for August is 80° with an average low of 61°. 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.