S
M
T
W
T
F
S
26
59°
38°
27
71°
35°
28
56°
39°
29
57°
47°
30
60°
41°
1
64°
34°
2
57°
41°
3
61°
38°
4
72°
36°
5
82°
50°
6
66°
49°
7
64°
44°
8
63°
36°
9
58°
45°
10
66°
44°
11
63°
44°
12
68°
32°
13
67°
50°
14
55°
45°
15
64°
48°
16
77°
57°
17
82°
60°
18
86°
61°
19
90°
64°
20
79°
55°
21
69°
48°
22
66°
50°
23
70°
50°
24
74°
51°
25
74°
55°
26
78°
59°
27
81°
52°
28
70°
50°
29
68°
53°
30
69°
57°
31
74°
53°
1
69°
51°
2
69°
49°
3
68°
49°
4
69°
50°
5
71°
58°
6
77°
59°
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 55° to 90°, with overnight lows between 45° and 64°. The average high for May is 73° with an average low of 54°. 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.