S
M
T
W
T
F
S
26
84°
61°
27
81°
64°
28
67°
60°
29
82°
63°
30
72°
60°
1
65°
54°
2
71°
49°
3
72°
46°
4
79°
48°
5
80°
51°
6
81°
63°
7
78°
61°
8
68°
57°
9
69°
60°
10
80°
62°
11
82°
63°
12
68°
60°
13
82°
57°
14
78°
59°
15
80°
52°
16
84°
57°
17
88°
69°
18
88°
66°
19
89°
66°
20
88°
70°
21
87°
68°
22
86°
69°
23
87°
69°
24
84°
69°
25
83°
70°
26
87°
69°
27
79°
69°
28
84°
70°
29
79°
68°
30
80°
68°
31
77°
64°
1
77°
61°
2
78°
62°
3
79°
61°
4
77°
63°
5
81°
62°
6
84°
65°
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 77° to 87°, with overnight lows between 61° and 70°. The average high for May is 80° with an average low of 65°. 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.