S
M
T
W
T
F
S
26
64°
52°
27
71°
44°
28
64°
45°
29
72°
53°
30
74°
45°
1
69°
39°
2
63°
40°
3
67°
33°
4
79°
36°
5
81°
47°
6
74°
63°
7
65°
45°
8
72°
37°
9
77°
42°
10
85°
48°
11
62°
43°
12
74°
39°
13
80°
42°
14
66°
43°
15
76°
37°
16
85°
46°
17
92°
60°
18
94°
59°
19
94°
64°
20
94°
60°
21
91°
59°
22
59°
56°
23
57°
53°
24
72°
55°
25
86°
65°
26
84°
66°
27
87°
70°
28
88°
62°
29
83°
54°
30
82°
54°
31
78°
61°
1
80°
61°
2
72°
51°
3
75°
55°
4
77°
61°
5
86°
61°
6
86°
67°
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 72° to 86°, with overnight lows between 51° and 67°. The average high for May is 80° 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.