S
M
T
W
T
F
S
30
60°
47°
31
58°
47°
1
57°
46°
2
57°
45°
3
56°
44°
4
56°
46°
5
57°
46°
6
56°
44°
7
55°
45°
8
55°
44°
9
56°
41°
10
55°
39°
11
55°
44°
12
54°
42°
13
55°
40°
14
57°
42°
15
55°
41°
16
58°
40°
17
57°
36°
18
58°
41°
19
57°
35°
20
53°
39°
21
54°
39°
22
53°
36°
23
54°
35°
24
52°
35°
25
55°
38°
26
55°
37°
27
51°
37°
28
48°
36°
29
49°
31°
30
47°
33°
1
48°
31°
2
46°
34°
3
48°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake And Peninsula Census Subarea
Lake And Peninsula Census Subarea's September 2026 forecast shows daily high temperatures ranging from 46° to 60°, with overnight lows between 31° and 47°. The average high for September is 54° with an average low of 40°. 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 Lake And Peninsula Census Subarea. See also: October | November | December.