S
M
T
W
T
F
S
26
79°
59°
27
70°
55°
28
67°
52°
29
82°
60°
30
74°
60°
1
66°
56°
2
65°
48°
3
70°
41°
4
77°
46°
5
80°
52°
6
78°
64°
7
77°
56°
8
69°
51°
9
73°
55°
10
81°
57°
11
77°
58°
12
72°
53°
13
78°
50°
14
82°
44°
15
74°
53°
16
82°
62°
17
85°
65°
18
86°
65°
19
87°
61°
20
87°
60°
21
83°
55°
22
80°
54°
23
80°
55°
24
78°
57°
25
80°
57°
26
82°
59°
27
84°
56°
28
82°
59°
29
83°
60°
30
83°
59°
31
80°
56°
1
80°
58°
2
83°
59°
3
84°
60°
4
83°
61°
5
84°
62°
6
85°
62°
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 74° to 87°, with overnight lows between 44° and 65°. The average high for May is 82° with an average low of 58°. 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.