S
M
T
W
T
F
S
30
82°
60°
31
81°
58°
1
82°
57°
2
81°
57°
3
80°
55°
4
80°
56°
5
81°
60°
6
80°
61°
7
82°
58°
8
81°
57°
9
80°
59°
10
81°
62°
11
83°
62°
12
85°
61°
13
84°
57°
14
79°
61°
15
84°
61°
16
84°
59°
17
83°
60°
18
84°
56°
19
79°
58°
20
81°
51°
21
83°
50°
22
75°
48°
23
Hist. Avg.
76°
52°
24
Hist. Avg.
76°
51°
25
Hist. Avg.
75°
51°
26
Hist. Avg.
75°
51°
27
Hist. Avg.
75°
50°
28
Hist. Avg.
74°
50°
29
Hist. Avg.
74°
50°
30
Hist. Avg.
74°
49°
1
Hist. Avg.
73°
49°
2
Hist. Avg.
73°
48°
3
Hist. Avg.
73°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Centralia
Centralia's September 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 48° and 62°. The average high for September is 81° 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 Centralia. See also: October | November | December.