S
M
T
W
T
F
S
26
55°
37°
27
68°
34°
28
67°
34°
29
65°
48°
30
62°
47°
1
69°
41°
2
65°
45°
3
63°
43°
4
79°
43°
5
88°
54°
6
74°
57°
7
68°
45°
8
72°
41°
9
74°
50°
10
79°
48°
11
60°
44°
12
68°
36°
13
79°
47°
14
68°
49°
15
68°
47°
16
87°
44°
17
93°
57°
18
94°
61°
19
99°
67°
20
98°
69°
21
69°
56°
22
63°
55°
23
56°
50°
24
59°
52°
25
71°
57°
26
82°
61°
27
80°
64°
28
75°
55°
29
78°
55°
30
67°
49°
31
70°
58°
1
72°
51°
2
71°
52°
3
77°
56°
4
78°
59°
5
78°
59°
6
78°
58°
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 67° to 80°, with overnight lows between 49° and 64°. The average high for May is 75° with an average low of 56°. 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.