S
M
T
W
T
F
S
26
80°
60°
27
85°
61°
28
75°
54°
29
66°
49°
30
66°
44°
1
66°
46°
2
66°
43°
3
80°
38°
4
77°
63°
5
76°
48°
6
57°
43°
7
66°
44°
8
77°
55°
9
85°
63°
10
77°
51°
11
71°
50°
12
80°
59°
13
83°
62°
14
82°
59°
15
83°
62°
16
84°
63°
17
78°
55°
18
74°
60°
19
78°
60°
20
76°
58°
21
79°
52°
22
72°
51°
23
72°
54°
24
71°
56°
25
72°
53°
26
73°
53°
27
74°
54°
28
75°
56°
29
76°
60°
30
77°
63°
31
76°
62°
1
76°
58°
2
77°
59°
3
78°
64°
4
78°
64°
5
77°
63°
6
78°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Siloam Springs
Siloam Springs's May 2026 forecast shows daily high temperatures ranging from 57° to 85°, with overnight lows between 43° and 65°. The average high for May is 76° with an average low of 57°. 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 Springs. See also: June | July | August.
