S
M
T
W
T
F
S
26
65°
46°
27
74°
48°
28
66°
52°
29
62°
45°
30
56°
41°
1
51°
39°
2
48°
33°
3
60°
34°
4
74°
46°
5
66°
45°
6
55°
43°
7
58°
37°
8
67°
46°
9
73°
54°
10
66°
52°
11
70°
40°
12
74°
40°
13
61°
46°
14
64°
42°
15
65°
41°
16
76°
56°
17
84°
62°
18
86°
66°
19
85°
67°
20
70°
53°
21
65°
49°
22
N/A
23
70°
58°
24
75°
59°
25
77°
61°
26
79°
62°
27
74°
59°
28
78°
56°
29
75°
53°
30
70°
52°
31
71°
52°
1
71°
55°
2
72°
54°
3
71°
58°
4
73°
57°
5
75°
58°
6
73°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Salem
Salem's May 2026 forecast shows daily high temperatures ranging from 70° to 79°, with overnight lows between 52° and 62°. The average high for May is 74° with an average low of 57°. 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.