S
M
T
W
T
F
S
30
83°
53°
31
82°
52°
1
82°
53°
2
84°
54°
3
86°
55°
4
86°
55°
5
85°
54°
6
87°
55°
7
87°
56°
8
86°
55°
9
86°
55°
10
79°
54°
11
79°
55°
12
84°
56°
13
85°
55°
14
86°
55°
15
85°
54°
16
84°
53°
17
82°
54°
18
83°
54°
19
84°
54°
20
84°
54°
21
Hist. Avg.
89°
47°
22
Hist. Avg.
89°
47°
23
Hist. Avg.
89°
47°
24
Hist. Avg.
89°
47°
25
Hist. Avg.
88°
47°
26
Hist. Avg.
88°
46°
27
Hist. Avg.
88°
46°
28
Hist. Avg.
87°
46°
29
Hist. Avg.
87°
46°
30
Hist. Avg.
87°
46°
1
Hist. Avg.
86°
46°
2
Hist. Avg.
86°
46°
3
Hist. Avg.
86°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Forest Lake
Forest Lake's September 2026 forecast shows daily high temperatures ranging from 79° to 87°, with overnight lows between 52° and 56°. The average high for September is 84° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Forest Lake. See also: October | November | December.
