S
M
T
W
T
F
S
26
73°
55°
27
74°
49°
28
74°
53°
29
73°
51°
30
72°
60°
1
70°
56°
2
72°
60°
3
76°
59°
4
68°
60°
5
71°
56°
6
70°
52°
7
63°
49°
8
66°
43°
9
67°
45°
10
67°
46°
11
68°
58°
12
66°
56°
13
64°
57°
14
66°
56°
15
66°
57°
16
N/A
17
70°
58°
18
67°
59°
19
64°
53°
20
67°
50°
21
67°
53°
22
65°
52°
23
70°
56°
24
68°
58°
25
65°
56°
26
65°
53°
27
66°
52°
28
65°
53°
29
64°
55°
30
64°
54°
31
65°
54°
1
65°
54°
2
66°
52°
3
65°
48°
4
63°
48°
5
63°
53°
6
64°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Galston
Galston's May 2026 forecast shows daily high temperatures ranging from 63° to 70°, with overnight lows between 48° and 59°. The average high for May is 66° with an average low of 54°. 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 Galston. See also: June | July | August.