S
M
T
W
T
F
S
26
62°
46°
27
77°
43°
28
74°
55°
29
61°
44°
30
55°
40°
1
54°
37°
2
54°
35°
3
61°
42°
4
64°
43°
5
63°
49°
6
66°
45°
7
63°
43°
8
62°
44°
9
61°
43°
10
63°
44°
11
62°
47°
12
72°
51°
13
70°
44°
14
65°
43°
15
64°
43°
16
65°
44°
17
66°
44°
18
68°
53°
19
76°
54°
20
74°
48°
21
69°
46°
22
68°
46°
23
70°
47°
24
78°
57°
25
79°
56°
26
75°
53°
27
70°
48°
28
72°
51°
29
78°
57°
30
80°
57°
31
81°
58°
1
81°
59°
2
82°
60°
3
83°
61°
4
83°
58°
5
77°
54°
6
80°
59°
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 54° to 83°, with overnight lows between 35° and 61°. The average high for May is 70° 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.