S
M
T
W
T
F
S
26
86°
62°
27
85°
60°
28
83°
62°
29
87°
66°
30
81°
66°
1
69°
56°
2
73°
46°
3
77°
46°
4
80°
49°
5
84°
61°
6
86°
71°
7
82°
50°
8
80°
49°
9
80°
53°
10
85°
59°
11
84°
60°
12
87°
57°
13
88°
57°
14
85°
60°
15
87°
58°
16
83°
59°
17
84°
60°
18
83°
62°
19
85°
62°
20
84°
63°
21
83°
62°
22
86°
57°
23
83°
57°
24
83°
58°
25
84°
60°
26
84°
59°
27
85°
58°
28
84°
60°
29
85°
63°
30
87°
65°
31
86°
66°
1
86°
66°
2
87°
65°
3
86°
66°
4
86°
67°
5
87°
67°
6
88°
66°
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 73° to 88°, with overnight lows between 46° and 71°. The average high for May is 84° with an average low of 60°. 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.