S
M
T
W
T
F
S
26
64°
44°
27
59°
44°
28
60°
40°
29
64°
42°
30
60°
39°
1
61°
46°
2
60°
45°
3
71°
47°
4
61°
41°
5
60°
41°
6
60°
42°
7
64°
45°
8
68°
42°
9
63°
43°
10
62°
42°
11
62°
43°
12
64°
54°
13
75°
56°
14
76°
57°
15
76°
53°
16
69°
48°
17
68°
54°
18
74°
56°
19
77°
58°
20
76°
54°
21
73°
49°
22
68°
52°
23
69°
49°
24
69°
49°
25
71°
52°
26
78°
59°
27
80°
59°
28
79°
60°
29
81°
58°
30
80°
57°
31
78°
53°
1
76°
52°
2
72°
51°
3
72°
51°
4
71°
53°
5
74°
55°
6
75°
62°
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 59° to 81°, with overnight lows between 39° and 62°. 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 Gaston. See also: June | July | August.