S
M
T
W
T
F
S
30
93°
71°
31
88°
65°
1
87°
61°
2
85°
60°
3
81°
64°
4
84°
63°
5
91°
62°
6
75°
62°
7
92°
68°
8
85°
71°
9
107°
72°
10
101°
77°
11
93°
74°
12
88°
70°
13
88°
64°
14
87°
65°
15
83°
65°
16
83°
63°
17
85°
65°
18
88°
66°
19
90°
67°
20
90°
66°
21
89°
65°
22
88°
64°
23
87°
64°
24
88°
62°
25
87°
63°
26
88°
60°
27
88°
63°
28
84°
59°
29
87°
62°
30
83°
62°
1
81°
61°
2
80°
61°
3
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chatsworth
Chatsworth's September 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 59° and 67°. The average high for September is 86° with an average low of 63°. 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.
