S
M
T
W
T
F
S
30
85°
56°
31
82°
58°
1
80°
60°
2
79°
57°
3
81°
52°
4
79°
58°
5
78°
61°
6
86°
59°
7
87°
60°
8
86°
59°
9
87°
57°
10
81°
59°
11
78°
58°
12
79°
59°
13
86°
56°
14
85°
55°
15
Hist. Avg.
81°
52°
16
Hist. Avg.
81°
52°
17
Hist. Avg.
80°
52°
18
Hist. Avg.
80°
51°
19
Hist. Avg.
80°
51°
20
Hist. Avg.
79°
51°
21
Hist. Avg.
79°
50°
22
Hist. Avg.
79°
50°
23
Hist. Avg.
78°
50°
24
Hist. Avg.
78°
49°
25
Hist. Avg.
77°
49°
26
Hist. Avg.
77°
48°
27
Hist. Avg.
77°
48°
28
Hist. Avg.
76°
48°
29
Hist. Avg.
76°
47°
30
Hist. Avg.
75°
47°
1
Hist. Avg.
75°
47°
2
Hist. Avg.
74°
46°
3
Hist. Avg.
74°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Chatsworth
Chatsworth's September 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 52° and 61°. The average high for September is 82° with an average low of 58°. 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 Chatsworth. See also: October | November | December.
