S
M
T
W
T
F
S
26
67°
52°
27
70°
50°
28
62°
50°
29
72°
55°
30
71°
50°
1
66°
43°
2
64°
41°
3
66°
35°
4
77°
38°
5
78°
46°
6
70°
60°
7
66°
46°
8
70°
40°
9
76°
45°
10
82°
49°
11
65°
52°
12
72°
45°
13
76°
43°
14
63°
43°
15
75°
37°
16
83°
50°
17
89°
58°
18
91°
61°
19
93°
60°
20
90°
67°
21
79°
57°
22
67°
57°
23
75°
62°
24
79°
62°
25
78°
61°
26
73°
62°
27
76°
61°
28
77°
60°
29
77°
60°
30
79°
58°
31
76°
55°
1
82°
59°
2
82°
60°
3
81°
59°
4
78°
59°
5
76°
54°
6
80°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Salem
Salem's May 2026 forecast shows daily high temperatures ranging from 67° to 93°, with overnight lows between 54° and 67°. The average high for May is 79° 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 Salem. See also: June | July | August.