S
M
T
W
T
F
S
30
80°
62°
31
79°
61°
1
80°
57°
2
73°
54°
3
71°
55°
4
72°
53°
5
72°
53°
6
75°
59°
7
79°
59°
8
77°
58°
9
73°
59°
10
76°
59°
11
78°
58°
12
78°
59°
13
79°
60°
14
78°
49°
15
71°
49°
16
68°
50°
17
69°
49°
18
69°
47°
19
68°
48°
20
68°
50°
21
75°
51°
22
74°
54°
23
75°
46°
24
75°
46°
25
69°
45°
26
67°
46°
27
70°
52°
28
71°
52°
29
72°
44°
30
68°
44°
1
64°
48°
2
66°
49°
3
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Truesdale Lake
Truesdale Lake's September 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 44° and 62°. The average high for September is 73° with an average low of 52°. 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 Truesdale Lake. See also: October | November | December.
