S
M
T
W
T
F
S
30
81°
66°
31
83°
70°
1
85°
69°
2
81°
64°
3
82°
63°
4
80°
66°
5
80°
61°
6
79°
54°
7
78°
55°
8
75°
55°
9
79°
64°
10
74°
49°
11
76°
44°
12
80°
54°
13
67°
52°
14
70°
40°
15
74°
59°
16
74°
59°
17
69°
54°
18
70°
54°
19
65°
55°
20
68°
52°
21
64°
54°
22
66°
53°
23
65°
55°
24
66°
56°
25
68°
58°
26
70°
59°
27
68°
57°
28
65°
56°
29
64°
42°
30
65°
53°
1
69°
52°
2
60°
50°
3
60°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hamlin Lake
Hamlin Lake's September 2026 forecast shows daily high temperatures ranging from 60° to 74°, with overnight lows between 42° and 59°. The average high for September is 66° 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 Hamlin Lake. See also: October | November | December.