S
M
T
W
T
F
S
26
71°
33°
27
57°
46°
28
56°
45°
29
70°
39°
30
79°
42°
1
74°
45°
2
77°
50°
3
86°
48°
4
77°
48°
5
65°
53°
6
62°
51°
7
69°
45°
8
64°
44°
9
72°
50°
10
68°
45°
11
73°
47°
12
71°
44°
13
77°
46°
14
76°
45°
15
69°
44°
16
68°
45°
17
69°
46°
18
69°
45°
19
67°
46°
20
68°
45°
21
63°
46°
22
63°
42°
23
67°
43°
24
71°
47°
25
70°
46°
26
63°
42°
27
63°
42°
28
68°
50°
29
64°
51°
30
67°
48°
31
72°
50°
1
74°
51°
2
74°
48°
3
66°
45°
4
72°
47°
5
73°
45°
6
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Centralia
Centralia's May 2026 forecast shows daily high temperatures ranging from 63° to 77°, with overnight lows between 42° and 51°. The average high for May is 69° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Centralia. See also: June | July | August.