S
M
T
W
T
F
S
26
79°
54°
27
83°
57°
28
61°
50°
29
61°
45°
30
65°
37°
1
62°
41°
2
60°
38°
3
76°
38°
4
80°
54°
5
64°
42°
6
60°
40°
7
66°
35°
8
73°
48°
9
79°
54°
10
67°
44°
11
74°
41°
12
78°
51°
13
73°
47°
14
74°
44°
15
79°
60°
16
80°
68°
17
82°
65°
18
75°
63°
19
76°
56°
20
62°
56°
21
69°
61°
22
70°
57°
23
75°
61°
24
76°
63°
25
77°
61°
26
77°
63°
27
78°
64°
28
80°
63°
29
78°
62°
30
79°
62°
31
82°
60°
1
83°
56°
2
82°
61°
3
77°
59°
4
76°
56°
5
81°
62°
6
83°
63°
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 83°, with overnight lows between 56° and 64°. The average high for May is 77° with an average low of 60°. 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.