S
M
T
W
T
F
S
26
71°
53°
27
71°
49°
28
72°
51°
29
67°
44°
30
65°
51°
1
66°
50°
2
69°
48°
3
68°
48°
4
71°
49°
5
75°
54°
6
76°
56°
7
77°
56°
8
77°
57°
9
76°
56°
10
76°
53°
11
68°
53°
12
69°
54°
13
74°
56°
14
73°
50°
15
70°
50°
16
73°
55°
17
78°
58°
18
73°
52°
19
73°
50°
20
73°
51°
21
72°
53°
22
73°
52°
23
71°
57°
24
74°
61°
25
78°
62°
26
81°
61°
27
83°
62°
28
80°
63°
29
85°
63°
30
84°
55°
31
78°
55°
1
77°
57°
2
81°
61°
3
85°
62°
4
83°
60°
5
86°
55°
6
78°
56°
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 65° to 86°, with overnight lows between 44° and 63°. The average high for May is 75° with an average low of 55°. 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.