S
M
T
W
T
F
S
30
82°
52°
31
83°
52°
1
84°
50°
2
83°
49°
3
81°
48°
4
80°
47°
5
79°
48°
6
80°
50°
7
81°
52°
8
83°
48°
9
82°
48°
10
81°
49°
11
80°
51°
12
81°
53°
13
83°
53°
14
86°
52°
15
86°
52°
16
85°
54°
17
86°
53°
18
86°
53°
19
84°
51°
20
85°
52°
21
85°
51°
22
84°
50°
23
81°
50°
24
82°
51°
25
85°
52°
26
81°
51°
27
79°
51°
28
79°
52°
29
Hist. Avg.
86°
50°
30
Hist. Avg.
86°
50°
1
Hist. Avg.
86°
50°
2
Hist. Avg.
86°
49°
3
Hist. Avg.
86°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Buellton
Buellton's September 2026 forecast shows daily high temperatures ranging from 79° to 86°, with overnight lows between 47° and 54°. The average high for September is 83° 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 Buellton. See also: October | November | December.
