S
M
T
W
T
F
S
26
60°
37°
27
61°
39°
28
67°
43°
29
65°
40°
30
65°
44°
1
73°
48°
2
71°
52°
3
68°
52°
4
67°
48°
5
59°
46°
6
63°
47°
7
63°
47°
8
62°
46°
9
61°
45°
10
62°
46°
11
63°
49°
12
63°
46°
13
56°
43°
14
56°
41°
15
61°
47°
16
62°
48°
17
63°
46°
18
62°
48°
19
66°
51°
20
67°
51°
21
68°
52°
22
68°
51°
23
67°
51°
24
66°
52°
25
65°
52°
26
64°
51°
27
66°
52°
28
63°
51°
29
67°
52°
30
67°
53°
31
66°
53°
1
68°
52°
2
68°
54°
3
69°
54°
4
69°
53°
5
68°
53°
6
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Spa
Spa's May 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 40° and 54°. The average high for May is 65° with an average low of 49°. 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 Spa. See also: June | July | August.
