S
M
T
W
T
F
S
30
70°
61°
31
66°
57°
1
68°
54°
2
68°
55°
3
72°
57°
4
79°
61°
5
68°
54°
6
72°
50°
7
86°
57°
8
85°
58°
9
69°
44°
10
70°
45°
11
71°
47°
12
74°
47°
13
75°
54°
14
74°
52°
15
76°
54°
16
71°
51°
17
72°
49°
18
71°
47°
19
72°
48°
20
68°
51°
21
67°
54°
22
68°
54°
23
69°
53°
24
69°
53°
25
70°
51°
26
67°
46°
27
64°
45°
28
65°
45°
29
65°
44°
30
64°
52°
1
65°
48°
2
60°
46°
3
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kirn
Kirn's September 2026 forecast shows daily high temperatures ranging from 60° to 86°, with overnight lows between 44° and 58°. The average high for September is 70° with an average low of 50°. 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 Kirn. See also: October | November | December.
