S
M
T
W
T
F
S
26
82°
65°
27
83°
65°
28
83°
66°
29
82°
66°
30
83°
64°
31
79°
61°
1
78°
58°
2
78°
61°
3
80°
62°
4
81°
62°
5
83°
65°
6
86°
66°
7
86°
67°
8
87°
66°
9
86°
65°
10
86°
65°
11
85°
66°
12
86°
65°
13
85°
66°
14
85°
56°
15
78°
62°
16
77°
55°
17
79°
56°
18
82°
55°
19
80°
53°
20
76°
53°
21
76°
55°
22
77°
55°
23
77°
53°
24
78°
60°
25
78°
60°
26
82°
58°
27
83°
55°
28
84°
52°
29
75°
52°
30
73°
53°
31
73°
53°
1
74°
51°
2
73°
56°
3
75°
51°
4
74°
53°
5
73°
55°
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 73° to 87°, with overnight lows between 51° and 67°. The average high for August is 80° with an average low of 59°. 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.