S
M
T
W
T
F
S
26
63°
43°
27
72°
40°
28
74°
50°
29
56°
46°
30
52°
34°
1
44°
34°
2
44°
34°
3
61°
31°
4
72°
48°
5
70°
49°
6
56°
40°
7
59°
34°
8
58°
38°
9
68°
48°
10
61°
39°
11
61°
34°
12
66°
32°
13
68°
43°
14
57°
43°
15
65°
36°
16
67°
61°
17
82°
62°
18
88°
65°
19
86°
65°
20
69°
44°
21
63°
45°
22
65°
52°
23
69°
57°
24
71°
58°
25
69°
54°
26
71°
53°
27
73°
55°
28
74°
54°
29
71°
51°
30
76°
57°
31
75°
56°
1
73°
56°
2
74°
57°
3
75°
56°
4
69°
55°
5
69°
55°
6
72°
57°
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 63° to 88°, with overnight lows between 44° and 65°. The average high for May is 73° with an average low of 56°. 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.