S
M
T
W
T
F
S
30
81°
62°
31
82°
61°
1
83°
59°
2
80°
59°
3
80°
60°
4
81°
61°
5
80°
64°
6
80°
63°
7
86°
58°
8
84°
62°
9
84°
67°
10
86°
67°
11
85°
65°
12
87°
55°
13
81°
61°
14
78°
61°
15
84°
64°
16
77°
63°
17
84°
54°
18
78°
55°
19
76°
63°
20
79°
52°
21
82°
51°
22
73°
50°
23
75°
60°
24
79°
61°
25
Hist. Avg.
76°
54°
26
Hist. Avg.
76°
54°
27
Hist. Avg.
75°
53°
28
Hist. Avg.
75°
53°
29
Hist. Avg.
74°
52°
30
Hist. Avg.
74°
52°
1
Hist. Avg.
74°
52°
2
Hist. Avg.
73°
51°
3
Hist. Avg.
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Leavenworth
Leavenworth's September 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 50° and 67°. The average high for September is 81° with an average low of 60°. 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 Leavenworth. See also: October | November | December.
