S
M
T
W
T
F
S
26
63°
40°
27
67°
43°
28
58°
44°
29
61°
45°
30
66°
47°
1
74°
48°
2
71°
51°
3
65°
52°
4
60°
49°
5
62°
41°
6
55°
42°
7
59°
44°
8
66°
42°
9
66°
42°
10
55°
38°
11
53°
33°
12
61°
35°
13
53°
43°
14
52°
41°
15
56°
39°
16
57°
47°
17
59°
42°
18
60°
50°
19
65°
53°
20
67°
50°
21
70°
54°
22
73°
53°
23
74°
53°
24
73°
52°
25
71°
51°
26
70°
50°
27
62°
44°
28
61°
45°
29
61°
44°
30
63°
48°
31
63°
49°
1
67°
50°
2
70°
51°
3
70°
52°
4
71°
51°
5
70°
51°
6
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Thurston
Thurston's May 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 39° and 54°. The average high for May is 66° with an average low of 49°. 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 Thurston. See also: June | July | August.