S
M
T
W
T
F
S
26
90°
57°
27
72°
66°
28
84°
59°
29
93°
61°
30
88°
68°
1
88°
63°
2
72°
57°
3
75°
50°
4
79°
45°
5
84°
50°
6
93°
55°
7
90°
63°
8
81°
66°
9
82°
64°
10
86°
68°
11
91°
68°
12
73°
70°
13
81°
68°
14
90°
59°
15
81°
48°
16
88°
61°
17
90°
72°
18
86°
61°
19
90°
64°
20
91°
63°
21
93°
64°
22
90°
73°
23
91°
70°
24
91°
70°
25
90°
70°
26
93°
72°
27
93°
72°
28
88°
69°
29
87°
71°
30
85°
69°
31
83°
68°
1
81°
66°
2
86°
67°
3
84°
68°
4
83°
67°
5
85°
66°
6
86°
67°
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 81° to 88°, with overnight lows between 66° and 71°. The average high for May is 85° with an average low of 68°. 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.