S
M
T
W
T
F
S
30
97°
79°
31
95°
77°
1
97°
77°
2
97°
75°
3
95°
79°
4
95°
73°
5
97°
75°
6
93°
72°
7
97°
70°
8
100°
73°
9
90°
72°
10
88°
64°
11
88°
64°
12
77°
59°
13
77°
59°
14
95°
61°
15
82°
61°
16
82°
61°
17
82°
70°
18
93°
70°
19
91°
68°
20
68°
63°
21
77°
59°
22
73°
55°
23
73°
55°
24
70°
59°
25
68°
59°
26
75°
61°
27
81°
63°
28
79°
61°
29
75°
63°
30
72°
68°
1
68°
54°
2
70°
45°
3
77°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Centralia
Centralia's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Centralia. See also: October | November | December.