S
M
T
W
T
F
S
26
70°
50°
27
64°
45°
28
70°
48°
29
70°
54°
30
61°
45°
1
61°
41°
2
55°
41°
3
59°
36°
4
71°
48°
5
76°
54°
6
72°
57°
7
63°
42°
8
63°
43°
9
66°
50°
10
73°
56°
11
66°
45°
12
58°
41°
13
66°
51°
14
67°
52°
15
68°
49°
16
70°
52°
17
69°
49°
18
76°
53°
19
75°
53°
20
75°
54°
21
74°
53°
22
71°
46°
23
66°
45°
24
67°
47°
25
69°
49°
26
72°
48°
27
68°
47°
28
69°
48°
29
70°
49°
30
71°
53°
31
72°
56°
1
76°
57°
2
72°
56°
3
72°
54°
4
73°
54°
5
77°
57°
6
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Siloam
Siloam's May 2026 forecast shows daily high temperatures ranging from 58° to 79°, with overnight lows between 41° and 58°. The average high for May is 70° with an average low of 51°. 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 Siloam. See also: June | July | August.