S
M
T
W
T
F
S
26
79°
52°
27
77°
55°
28
61°
50°
29
61°
43°
30
64°
37°
1
61°
37°
2
61°
43°
3
73°
39°
4
81°
54°
5
61°
46°
6
59°
41°
7
68°
39°
8
64°
52°
9
81°
50°
10
68°
46°
11
77°
45°
12
81°
54°
13
73°
50°
14
75°
48°
15
84°
54°
16
81°
64°
17
86°
68°
18
77°
64°
19
66°
49°
20
66°
47°
21
69°
54°
22
62°
56°
23
76°
57°
24
78°
57°
25
78°
59°
26
80°
63°
27
79°
62°
28
81°
63°
29
80°
61°
30
80°
60°
31
82°
62°
1
78°
58°
2
82°
62°
3
74°
59°
4
74°
58°
5
80°
64°
6
80°
64°
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 62° to 82°, with overnight lows between 47° and 64°. The average high for May is 76° with an average low of 59°. 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.