S
M
T
W
T
F
S
26
94°
73°
27
96°
73°
28
91°
72°
29
85°
64°
30
88°
62°
31
80°
66°
1
75°
69°
2
82°
69°
3
87°
61°
4
89°
62°
5
89°
61°
6
76°
70°
7
89°
70°
8
89°
68°
9
91°
71°
10
92°
76°
11
95°
77°
12
91°
74°
13
93°
74°
14
93°
78°
15
94°
77°
16
92°
73°
17
84°
67°
18
87°
62°
19
83°
71°
20
85°
69°
21
88°
63°
22
84°
64°
23
82°
58°
24
82°
60°
25
84°
63°
26
90°
63°
27
86°
60°
28
88°
59°
29
88°
64°
30
92°
68°
31
86°
64°
1
87°
61°
2
85°
61°
3
87°
60°
4
85°
61°
5
86°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Centralia
Centralia's August 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 59° and 68°. The average high for August is 87° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Centralia. See also: September | October | November.