S
M
T
W
T
F
S
26
65°
47°
27
79°
39°
28
71°
51°
29
66°
53°
30
55°
39°
1
63°
32°
2
55°
33°
3
59°
32°
4
73°
48°
5
76°
59°
6
62°
52°
7
62°
42°
8
67°
35°
9
68°
51°
10
67°
50°
11
65°
42°
12
73°
36°
13
69°
47°
14
51°
40°
15
66°
34°
16
75°
43°
17
83°
57°
18
89°
58°
19
89°
68°
20
83°
59°
21
61°
53°
22
61°
55°
23
77°
59°
24
77°
63°
25
74°
63°
26
74°
64°
27
73°
67°
28
77°
54°
29
77°
52°
30
73°
53°
31
71°
52°
1
75°
51°
2
76°
54°
3
74°
56°
4
74°
58°
5
78°
54°
6
74°
56°
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 71° to 78°, with overnight lows between 51° and 67°. The average high for May is 75° with an average low of 57°. 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.