S
M
T
W
T
F
S
30
72°
46°
31
72°
46°
1
73°
45°
2
72°
48°
3
73°
53°
4
73°
53°
5
78°
52°
6
75°
49°
7
80°
53°
8
79°
54°
9
80°
48°
10
79°
43°
11
69°
42°
12
67°
40°
13
66°
41°
14
65°
40°
15
65°
41°
16
67°
41°
17
66°
43°
18
71°
42°
19
76°
40°
20
65°
39°
21
64°
38°
22
62°
40°
23
71°
48°
24
73°
45°
25
Hist. Avg.
65°
40°
26
Hist. Avg.
65°
40°
27
Hist. Avg.
64°
39°
28
Hist. Avg.
64°
39°
29
Hist. Avg.
64°
38°
30
Hist. Avg.
63°
38°
1
Hist. Avg.
63°
38°
2
Hist. Avg.
62°
37°
3
Hist. Avg.
62°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Turtle Lake
Turtle Lake's September 2026 forecast shows daily high temperatures ranging from 62° to 80°, with overnight lows between 38° and 54°. The average high for September is 71° with an average low of 45°. 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 Turtle Lake. See also: October | November | December.
