S
M
T
W
T
F
S
30
91°
57°
31
93°
56°
1
93°
56°
2
91°
55°
3
90°
56°
4
89°
56°
5
89°
57°
6
90°
56°
7
91°
54°
8
90°
56°
9
89°
58°
10
88°
60°
11
90°
58°
12
92°
60°
13
93°
61°
14
94°
62°
15
95°
60°
16
94°
60°
17
93°
59°
18
93°
59°
19
92°
58°
20
91°
59°
21
92°
60°
22
93°
59°
23
92°
59°
24
90°
58°
25
83°
54°
26
81°
55°
27
82°
56°
28
83°
57°
29
84°
56°
30
83°
57°
1
82°
55°
2
81°
55°
3
88°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chowchilla
Chowchilla's September 2026 forecast shows daily high temperatures ranging from 81° to 95°, with overnight lows between 54° and 62°. The average high for September is 89° 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 Chowchilla. See also: October | November | December.