S
M
T
W
T
F
S
26
55°
40°
27
56°
43°
28
46°
36°
29
63°
33°
30
60°
38°
1
61°
35°
2
70°
33°
3
75°
44°
4
80°
45°
5
53°
45°
6
61°
39°
7
75°
40°
8
78°
46°
9
78°
45°
10
74°
42°
11
83°
43°
12
81°
54°
13
82°
41°
14
85°
60°
15
94°
49°
16
87°
55°
17
91°
57°
18
54°
45°
19
63°
42°
20
62°
46°
21
67°
47°
22
69°
53°
23
77°
54°
24
85°
62°
25
88°
62°
26
83°
61°
27
77°
63°
28
74°
59°
29
79°
58°
30
76°
52°
31
73°
53°
1
76°
53°
2
79°
55°
3
78°
56°
4
81°
58°
5
80°
57°
6
83°
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 73° to 88°, with overnight lows between 52° and 63°. The average high for May is 79° 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.