S
M
T
W
T
F
S
30
72°
54°
31
66°
50°
1
68°
46°
2
70°
46°
3
73°
48°
4
81°
50°
5
68°
52°
6
75°
58°
7
77°
57°
8
73°
52°
9
57°
43°
10
58°
43°
11
59°
49°
12
55°
46°
13
56°
46°
14
56°
45°
15
59°
49°
16
59°
49°
17
61°
48°
18
61°
45°
19
53°
38°
20
54°
39°
21
56°
40°
22
59°
42°
23
59°
42°
24
58°
42°
25
59°
45°
26
58°
44°
27
57°
43°
28
58°
45°
29
57°
44°
30
57°
41°
1
55°
38°
2
54°
38°
3
57°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cernier
Cernier's September 2026 forecast shows daily high temperatures ranging from 53° to 77°, with overnight lows between 38° and 58°. The average high for September is 59° 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 Cernier. See also: October | November | December.
