S
M
T
W
T
F
S
26
85°
72°
27
92°
74°
28
89°
76°
29
79°
60°
30
64°
59°
1
59°
52°
2
77°
47°
3
81°
53°
4
82°
59°
5
89°
71°
6
76°
55°
7
67°
56°
8
75°
55°
9
90°
64°
10
88°
64°
11
78°
62°
12
84°
57°
13
90°
60°
14
90°
65°
15
83°
65°
16
88°
69°
17
88°
73°
18
90°
77°
19
92°
69°
20
79°
66°
21
79°
67°
22
85°
67°
23
82°
62°
24
89°
64°
25
90°
64°
26
89°
69°
27
83°
68°
28
87°
67°
29
90°
71°
30
88°
69°
31
82°
67°
1
79°
66°
2
79°
64°
3
82°
61°
4
81°
62°
5
86°
68°
6
87°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Flat
Flat's May 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 61° and 71°. The average high for May is 84° with an average low of 67°. 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 Flat. See also: June | July | August.
