S
M
T
W
T
F
S
30
84°
55°
31
88°
57°
1
81°
59°
2
82°
59°
3
84°
57°
4
76°
53°
5
72°
53°
6
73°
50°
7
77°
54°
8
78°
55°
9
67°
53°
10
58°
49°
11
58°
49°
12
59°
48°
13
56°
47°
14
58°
48°
15
59°
47°
16
58°
46°
17
58°
48°
18
62°
47°
19
63°
49°
20
63°
48°
21
61°
46°
22
61°
45°
23
60°
43°
24
61°
44°
25
61°
46°
26
60°
46°
27
61°
45°
28
59°
45°
29
54°
46°
30
58°
42°
1
57°
39°
2
49°
37°
3
50°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Leppen
Leppen's September 2026 forecast shows daily high temperatures ranging from 49° to 78°, with overnight lows between 37° and 55°. The average high for September is 62° with an average low of 47°. 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 Leppen. See also: October | November | December.
