S
M
T
W
T
F
S
26
66°
36°
27
68°
45°
28
57°
45°
29
63°
46°
30
68°
46°
1
75°
50°
2
72°
50°
3
63°
52°
4
57°
41°
5
61°
36°
6
54°
43°
7
59°
41°
8
64°
36°
9
68°
41°
10
55°
34°
11
54°
30°
12
59°
34°
13
54°
41°
14
54°
39°
15
54°
43°
16
59°
37°
17
63°
45°
18
59°
48°
19
64°
51°
20
67°
50°
21
74°
53°
22
80°
58°
23
76°
54°
24
73°
50°
25
71°
50°
26
75°
52°
27
78°
55°
28
71°
51°
29
69°
50°
30
70°
51°
31
64°
47°
1
62°
45°
2
63°
45°
3
66°
50°
4
67°
51°
5
68°
52°
6
70°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grimston
Grimston's May 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 45° and 58°. The average high for May is 69° with an average low of 51°. 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 Grimston. See also: June | July | August.
