S
M
T
W
T
F
S
30
60°
38°
31
60°
38°
1
61°
41°
2
62°
42°
3
61°
43°
4
57°
40°
5
59°
32°
6
55°
35°
7
57°
39°
8
60°
39°
9
60°
40°
10
61°
38°
11
58°
33°
12
53°
30°
13
55°
31°
14
57°
30°
15
54°
29°
16
48°
29°
17
49°
30°
18
49°
28°
19
46°
28°
20
47°
29°
21
46°
34°
22
47°
33°
23
49°
34°
24
51°
35°
25
51°
33°
26
50°
33°
27
45°
26°
28
43°
31°
29
42°
25°
30
Hist. Avg.
43°
24°
1
Hist. Avg.
43°
24°
2
Hist. Avg.
42°
23°
3
Hist. Avg.
41°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Thistle Creek
Thistle Creek's September 2026 forecast shows daily high temperatures ranging from 42° to 62°, with overnight lows between 25° and 43°. The average high for September is 53° with an average low of 34°. 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 Thistle Creek. See also: October | November | December.