S
M
T
W
T
F
S
26
39°
32°
27
43°
30°
28
48°
32°
29
48°
32°
30
48°
30°
1
48°
28°
2
54°
30°
3
55°
34°
4
52°
34°
5
46°
25°
6
36°
14°
7
52°
23°
8
54°
29°
9
53°
29°
10
64°
33°
11
67°
37°
12
73°
42°
13
69°
40°
14
68°
40°
15
67°
42°
16
65°
41°
17
64°
40°
18
58°
28°
19
58°
27°
20
60°
29°
21
62°
33°
22
62°
34°
23
63°
34°
24
57°
29°
25
56°
27°
26
60°
33°
27
63°
34°
28
56°
34°
29
57°
33°
30
56°
31°
31
57°
32°
1
57°
29°
2
58°
30°
3
59°
32°
4
58°
31°
5
58°
33°
6
63°
35°
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 36° to 73°, with overnight lows between 14° and 42°. The average high for May is 59° with an average low of 32°. 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.