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
71°
50°
3
77°
44°
4
80°
46°
5
83°
63°
6
86°
71°
7
82°
64°
8
73°
58°
9
82°
60°
10
85°
64°
11
84°
56°
12
81°
50°
13
87°
58°
14
85°
57°
15
88°
60°
16
88°
59°
17
87°
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 85° with an average low of 61°. 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.