S
M
T
W
T
F
S
26
71°
29°
27
58°
45°
28
56°
38°
29
70°
35°
30
77°
40°
1
77°
42°
2
75°
44°
3
85°
45°
4
78°
43°
5
64°
47°
6
58°
52°
7
68°
49°
8
63°
44°
9
71°
48°
10
67°
45°
11
72°
44°
12
78°
51°
13
72°
45°
14
68°
44°
15
64°
43°
16
61°
44°
17
64°
44°
18
64°
41°
19
65°
41°
20
65°
42°
21
67°
45°
22
62°
41°
23
66°
42°
24
70°
46°
25
70°
45°
26
62°
41°
27
62°
41°
28
67°
49°
29
63°
50°
30
66°
47°
31
72°
49°
1
73°
50°
2
73°
47°
3
65°
44°
4
71°
45°
5
72°
44°
6
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lacey
Lacey's May 2026 forecast shows daily high temperatures ranging from 61° to 78°, with overnight lows between 41° and 51°. The average high for May is 67° with an average low of 45°. 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 Lacey. See also: June | July | August.