S
M
T
W
T
F
S
26
71°
41°
27
68°
42°
28
67°
43°
29
62°
42°
30
64°
42°
1
62°
43°
2
63°
42°
3
67°
41°
4
73°
43°
5
74°
44°
6
74°
44°
7
72°
43°
8
75°
43°
9
65°
45°
10
67°
44°
11
75°
45°
12
76°
45°
13
77°
46°
14
78°
47°
15
78°
47°
16
77°
48°
17
73°
47°
18
79°
48°
19
80°
48°
20
78°
50°
21
80°
41°
22
79°
42°
23
78°
48°
24
81°
46°
25
83°
46°
26
83°
46°
27
82°
46°
28
84°
42°
29
79°
39°
30
82°
46°
31
81°
48°
1
87°
51°
2
86°
52°
3
86°
52°
4
87°
51°
5
87°
44°
6
77°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Firestone
Firestone's May 2026 forecast shows daily high temperatures ranging from 62° to 87°, with overnight lows between 39° and 52°. The average high for May is 76° with an average low of 45°. 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 Firestone. See also: June | July | August.