S
M
T
W
T
F
S
30
78°
60°
31
76°
61°
1
75°
62°
2
74°
59°
3
72°
58°
4
73°
59°
5
69°
53°
6
64°
47°
7
71°
53°
8
73°
52°
9
71°
54°
10
67°
53°
11
66°
46°
12
67°
45°
13
69°
47°
14
72°
52°
15
73°
52°
16
72°
51°
17
68°
51°
18
72°
52°
19
71°
52°
20
65°
51°
21
69°
51°
22
70°
52°
23
71°
50°
24
70°
48°
25
60°
44°
26
61°
41°
27
63°
44°
28
67°
47°
29
68°
48°
30
69°
48°
1
69°
47°
2
68°
48°
3
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Berne
Berne's September 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 41° and 62°. The average high for September is 69° with an average low of 51°. 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 Berne. See also: October | November | December.
