S
M
T
W
T
F
S
26
82°
58°
27
87°
66°
28
77°
57°
29
69°
48°
30
65°
48°
1
59°
44°
2
63°
43°
3
70°
49°
4
74°
53°
5
75°
59°
6
71°
54°
7
62°
44°
8
62°
47°
9
67°
49°
10
73°
56°
11
73°
54°
12
72°
53°
13
68°
58°
14
73°
59°
15
73°
59°
16
75°
60°
17
76°
60°
18
76°
59°
19
75°
61°
20
76°
61°
21
74°
60°
22
74°
59°
23
70°
56°
24
73°
61°
25
76°
62°
26
71°
56°
27
70°
54°
28
72°
59°
29
73°
57°
30
78°
63°
31
79°
63°
1
79°
64°
2
78°
64°
3
80°
63°
4
76°
61°
5
73°
57°
6
73°
57°
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 59° to 80°, with overnight lows between 43° and 64°. The average high for May is 72° with an average low of 56°. 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.
