S
M
T
W
T
F
S
26
54°
40°
27
66°
40°
28
64°
41°
29
62°
45°
30
58°
46°
1
64°
42°
2
59°
46°
3
58°
42°
4
68°
54°
5
76°
59°
6
63°
51°
7
58°
46°
8
64°
46°
9
62°
47°
10
67°
50°
11
65°
51°
12
68°
50°
13
66°
49°
14
66°
50°
15
70°
52°
16
69°
51°
17
74°
55°
18
76°
56°
19
76°
55°
20
75°
56°
21
74°
54°
22
73°
49°
23
70°
48°
24
67°
50°
25
69°
49°
26
69°
52°
27
70°
50°
28
70°
51°
29
71°
50°
30
70°
51°
31
71°
59°
1
75°
58°
2
73°
53°
3
72°
57°
4
77°
60°
5
75°
57°
6
74°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Locust Valley
Locust Valley's May 2026 forecast shows daily high temperatures ranging from 58° to 77°, with overnight lows between 46° and 60°. The average high for May is 70° with an average low of 53°. 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 Locust Valley. See also: June | July | August.
