S
M
T
W
T
F
S
26
66°
32°
27
58°
38°
28
56°
45°
29
66°
37°
30
73°
39°
1
78°
51°
2
81°
52°
3
84°
49°
4
84°
50°
5
75°
52°
6
75°
49°
7
71°
46°
8
72°
49°
9
73°
48°
10
74°
48°
11
73°
49°
12
73°
48°
13
70°
49°
14
67°
43°
15
69°
45°
16
66°
46°
17
63°
46°
18
63°
47°
19
66°
45°
20
66°
48°
21
62°
48°
22
63°
44°
23
68°
45°
24
72°
49°
25
73°
50°
26
74°
51°
27
69°
49°
28
70°
47°
29
70°
49°
30
73°
52°
31
68°
50°
1
64°
51°
2
67°
49°
3
68°
50°
4
65°
49°
5
66°
48°
6
71°
51°
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 62° to 84°, with overnight lows between 43° and 52°. The average high for May is 70° 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.