S
M
T
W
T
F
S
26
39°
36°
27
40°
34°
28
37°
34°
29
43°
33°
30
34°
31°
1
32°
27°
2
32°
26°
3
35°
26°
4
34°
28°
5
36°
29°
6
35°
28°
7
38°
29°
8
37°
28°
9
35°
29°
10
35°
28°
11
37°
28°
12
37°
31°
13
36°
30°
14
39°
32°
15
37°
35°
16
38°
34°
17
37°
35°
18
37°
35°
19
38°
34°
20
38°
35°
21
39°
36°
22
38°
36°
23
38°
35°
24
38°
36°
25
39°
36°
26
40°
37°
27
39°
36°
28
40°
37°
29
40°
37°
30
41°
38°
31
40°
38°
1
40°
37°
2
41°
38°
3
41°
38°
4
42°
39°
5
41°
38°
6
41°
39°
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 32° to 42°, with overnight lows between 26° and 39°. The average high for May is 38° with an average low of 33°. 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.