S
M
T
W
T
F
S
30
80°
60°
31
74°
60°
1
73°
56°
2
75°
53°
3
73°
56°
4
84°
61°
5
71°
45°
6
71°
45°
7
73°
54°
8
78°
56°
9
60°
46°
10
62°
45°
11
63°
48°
12
59°
47°
13
58°
46°
14
60°
46°
15
63°
47°
16
64°
47°
17
65°
48°
18
69°
46°
19
61°
48°
20
65°
47°
21
66°
47°
22
63°
45°
23
67°
46°
24
68°
47°
25
68°
48°
26
67°
43°
27
61°
40°
28
61°
39°
29
60°
38°
30
62°
46°
1
58°
41°
2
58°
38°
3
62°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Treffelstein
Treffelstein's September 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 38° and 56°. The average high for September is 64° 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 Treffelstein. See also: October | November | December.
