S
M
T
W
T
F
S
26
64°
43°
27
56°
46°
28
54°
46°
29
62°
44°
30
69°
46°
1
65°
50°
2
69°
49°
3
75°
55°
4
76°
55°
5
64°
51°
6
56°
49°
7
61°
49°
8
59°
48°
9
64°
47°
10
63°
50°
11
66°
49°
12
80°
50°
13
59°
51°
14
59°
47°
15
52°
45°
16
54°
42°
17
61°
45°
18
62°
47°
19
62°
49°
20
64°
48°
21
70°
49°
22
71°
51°
23
61°
49°
24
69°
54°
25
60°
49°
26
63°
49°
27
68°
52°
28
73°
52°
29
60°
47°
30
58°
47°
31
62°
49°
1
68°
51°
2
69°
53°
3
68°
53°
4
69°
54°
5
70°
50°
6
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mountlake Terrace
Mountlake Terrace's May 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 47° and 54°. The average high for May is 66° with an average low of 51°. 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 Mountlake Terrace. See also: June | July | August.
