S
M
T
W
T
F
S
26
79°
64°
27
81°
58°
28
84°
56°
29
89°
60°
30
91°
63°
1
90°
67°
2
93°
69°
3
96°
73°
4
78°
71°
5
80°
65°
6
84°
60°
7
96°
64°
8
103°
66°
9
104°
73°
10
106°
72°
11
108°
74°
12
106°
77°
13
99°
78°
14
99°
72°
15
98°
73°
16
98°
74°
17
93°
73°
18
86°
68°
19
90°
67°
20
92°
64°
21
103°
64°
22
96°
66°
23
98°
70°
24
99°
71°
25
97°
70°
26
95°
67°
27
94°
65°
28
93°
63°
29
92°
67°
30
97°
71°
31
100°
70°
1
101°
75°
2
104°
76°
3
105°
75°
4
103°
73°
5
100°
69°
6
95°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Surprise
Surprise's May 2026 forecast shows daily high temperatures ranging from 92° to 105°, with overnight lows between 63° and 76°. The average high for May is 98° with an average low of 70°. 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 Surprise. See also: June | July | August.
