S
M
T
W
T
F
S
26
71°
37°
27
58°
39°
28
59°
45°
29
73°
40°
30
81°
49°
1
74°
50°
2
73°
48°
3
90°
53°
4
75°
52°
5
67°
52°
6
70°
52°
7
71°
50°
8
67°
46°
9
79°
46°
10
69°
53°
11
81°
50°
12
80°
54°
13
63°
50°
14
63°
41°
15
57°
42°
16
60°
42°
17
66°
42°
18
70°
45°
19
71°
46°
20
72°
47°
21
83°
52°
22
77°
48°
23
76°
48°
24
73°
48°
25
70°
47°
26
72°
47°
27
70°
48°
28
65°
46°
29
65°
44°
30
67°
45°
31
73°
48°
1
73°
50°
2
68°
50°
3
66°
44°
4
65°
44°
5
65°
45°
6
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gaston
Gaston's May 2026 forecast shows daily high temperatures ranging from 57° to 83°, with overnight lows between 41° and 52°. The average high for May is 69° with an average low of 46°. 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 Gaston. See also: June | July | August.