S
M
T
W
T
F
S
26
80°
61°
27
80°
62°
28
78°
55°
29
77°
54°
30
79°
58°
1
80°
57°
2
81°
60°
3
87°
66°
4
85°
59°
5
79°
57°
6
80°
59°
7
82°
63°
8
86°
65°
9
89°
67°
10
90°
67°
11
92°
68°
12
92°
68°
13
93°
67°
14
89°
66°
15
84°
60°
16
85°
63°
17
88°
64°
18
91°
69°
19
94°
70°
20
93°
70°
21
95°
71°
22
91°
64°
23
94°
67°
24
99°
67°
25
96°
63°
26
92°
67°
27
97°
66°
28
101°
69°
29
102°
69°
30
101°
70°
31
102°
76°
1
104°
76°
2
105°
73°
3
103°
69°
4
98°
67°
5
93°
62°
6
92°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fountain Hills
Fountain Hills's May 2026 forecast shows daily high temperatures ranging from 77° to 105°, with overnight lows between 54° and 76°. The average high for May is 90° with an average low of 65°. 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 Fountain Hills. See also: June | July | August.
