S
M
T
W
T
F
S
26
69°
37°
27
59°
38°
28
61°
44°
29
69°
38°
30
79°
42°
1
73°
46°
2
67°
49°
3
89°
50°
4
73°
51°
5
67°
51°
6
71°
52°
7
72°
52°
8
69°
46°
9
77°
51°
10
69°
48°
11
77°
51°
12
77°
55°
13
70°
51°
14
65°
50°
15
63°
48°
16
65°
46°
17
68°
47°
18
68°
48°
19
65°
49°
20
65°
48°
21
69°
50°
22
68°
48°
23
65°
44°
24
63°
45°
25
63°
46°
26
61°
46°
27
62°
48°
28
63°
45°
29
66°
50°
30
66°
47°
31
63°
46°
1
64°
48°
2
67°
48°
3
67°
49°
4
68°
47°
5
70°
52°
6
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Silverton
Silverton's May 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 44° and 55°. The average high for May is 67° with an average low of 48°. 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 Silverton. See also: June | July | August.