S
M
T
W
T
F
S
26
54°
43°
27
55°
43°
28
57°
46°
29
59°
48°
30
56°
48°
1
61°
49°
2
61°
48°
3
59°
49°
4
60°
48°
5
55°
44°
6
54°
42°
7
54°
45°
8
55°
43°
9
56°
46°
10
56°
48°
11
57°
47°
12
58°
51°
13
57°
49°
14
57°
46°
15
56°
46°
16
57°
46°
17
56°
45°
18
65°
50°
19
60°
52°
20
59°
46°
21
58°
48°
22
60°
44°
23
59°
48°
24
63°
52°
25
65°
51°
26
65°
54°
27
67°
53°
28
60°
45°
29
59°
51°
30
64°
48°
31
67°
55°
1
68°
54°
2
67°
55°
3
67°
52°
4
59°
54°
5
63°
52°
6
59°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Steveston
Steveston's May 2026 forecast shows daily high temperatures ranging from 54° to 68°, with overnight lows between 42° and 55°. The average high for May is 60° with an average low of 48°. 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 Steveston. See also: June | July | August.