S
M
T
W
T
F
S
26
65°
49°
27
67°
44°
28
65°
45°
29
62°
43°
30
64°
44°
1
63°
43°
2
64°
44°
3
63°
44°
4
62°
45°
5
62°
42°
6
63°
41°
7
68°
50°
8
72°
49°
9
67°
51°
10
65°
46°
11
66°
44°
12
64°
42°
13
63°
43°
14
65°
44°
15
66°
49°
16
67°
45°
17
68°
52°
18
76°
50°
19
69°
46°
20
68°
49°
21
69°
54°
22
68°
55°
23
70°
57°
24
78°
57°
25
78°
56°
26
79°
58°
27
80°
58°
28
80°
57°
29
82°
57°
30
82°
57°
31
81°
55°
1
78°
53°
2
74°
57°
3
75°
59°
4
75°
59°
5
76°
58°
6
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grottoes
Grottoes's May 2026 forecast shows daily high temperatures ranging from 62° to 82°, with overnight lows between 41° and 59°. The average high for May is 70° with an average low of 50°. 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 Grottoes. See also: June | July | August.
