S
M
T
W
T
F
S
26
55°
42°
27
57°
43°
28
54°
44°
29
56°
44°
30
57°
45°
1
58°
45°
2
57°
44°
3
58°
45°
4
57°
47°
5
59°
47°
6
57°
45°
7
57°
44°
8
60°
43°
9
58°
44°
10
58°
50°
11
60°
45°
12
58°
43°
13
59°
51°
14
65°
52°
15
61°
50°
16
61°
50°
17
62°
52°
18
64°
54°
19
69°
50°
20
67°
47°
21
60°
46°
22
62°
50°
23
63°
51°
24
66°
55°
25
70°
56°
26
71°
54°
27
63°
53°
28
64°
56°
29
64°
55°
30
65°
53°
31
65°
56°
1
72°
55°
2
70°
57°
3
73°
57°
4
72°
58°
5
73°
55°
6
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Niantic
Niantic's May 2026 forecast shows daily high temperatures ranging from 54° to 73°, with overnight lows between 42° and 58°. The average high for May is 63° 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 Niantic. See also: June | July | August.
