S
M
T
W
T
F
S
30
82°
42°
31
81°
38°
1
81°
32°
2
71°
32°
3
71°
33°
4
74°
36°
5
78°
39°
6
77°
39°
7
77°
29°
8
68°
32°
9
67°
31°
10
69°
34°
11
72°
31°
12
77°
30°
13
68°
38°
14
75°
42°
15
78°
39°
16
75°
30°
17
68°
29°
18
70°
31°
19
74°
31°
20
74°
34°
21
73°
39°
22
74°
38°
23
70°
37°
24
64°
34°
25
63°
35°
26
69°
36°
27
70°
36°
28
69°
35°
29
69°
36°
30
63°
31°
1
60°
28°
2
59°
25°
3
60°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fontenelle
Fontenelle's September 2026 forecast shows daily high temperatures ranging from 59° to 82°, with overnight lows between 25° and 42°. The average high for September is 71° with an average low of 34°. 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 Fontenelle. See also: October | November | December.
