S
M
T
W
T
F
S
26
77°
54°
27
75°
52°
28
81°
55°
29
83°
56°
30
87°
57°
1
88°
58°
2
80°
51°
3
74°
46°
4
73°
46°
5
74°
49°
6
73°
46°
7
72°
47°
8
74°
48°
9
76°
49°
10
75°
48°
11
75°
48°
12
76°
49°
13
77°
50°
14
82°
57°
15
78°
50°
16
76°
51°
17
77°
50°
18
79°
51°
19
87°
54°
20
89°
56°
21
91°
60°
22
90°
58°
23
82°
53°
24
82°
53°
25
83°
57°
26
84°
58°
27
83°
57°
28
82°
55°
29
81°
54°
30
84°
58°
31
91°
63°
1
88°
59°
2
89°
62°
3
93°
62°
4
97°
61°
5
95°
62°
6
94°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. George
St. George's May 2026 forecast shows daily high temperatures ranging from 72° to 97°, with overnight lows between 46° and 63°. The average high for May is 82° 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 St. George. See also: June | July | August.