S
M
T
W
T
F
S
30
92°
60°
31
91°
61°
1
92°
63°
2
92°
63°
3
90°
62°
4
91°
62°
5
88°
61°
6
83°
61°
7
83°
60°
8
84°
57°
9
84°
55°
10
83°
54°
11
82°
54°
12
82°
55°
13
83°
53°
14
81°
53°
15
81°
52°
16
83°
54°
17
82°
53°
18
81°
52°
19
80°
53°
20
80°
55°
21
82°
57°
22
83°
58°
23
82°
58°
24
88°
57°
25
88°
57°
26
Hist. Avg.
88°
58°
27
Hist. Avg.
87°
58°
28
Hist. Avg.
87°
57°
29
Hist. Avg.
87°
57°
30
Hist. Avg.
86°
56°
1
Hist. Avg.
86°
56°
2
Hist. Avg.
86°
56°
3
Hist. Avg.
85°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cajon
Cajon's September 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 52° and 63°. The average high for September is 85° with an average low of 57°. 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 Cajon. See also: October | November | December.
