S
M
T
W
T
F
S
26
46°
41°
27
55°
39°
28
61°
45°
29
68°
48°
30
73°
52°
1
75°
57°
2
70°
61°
3
64°
48°
4
50°
45°
5
50°
45°
6
66°
50°
7
73°
54°
8
75°
57°
9
79°
57°
10
81°
61°
11
84°
66°
12
82°
64°
13
71°
56°
14
76°
50°
15
75°
49°
16
70°
45°
17
70°
45°
18
70°
54°
19
73°
49°
20
77°
51°
21
78°
53°
22
74°
50°
23
73°
48°
24
70°
46°
25
66°
45°
26
69°
46°
27
68°
40°
28
62°
37°
29
62°
36°
30
63°
38°
31
70°
42°
1
72°
43°
2
73°
45°
3
73°
45°
4
64°
39°
5
65°
40°
6
68°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grass Flat
Grass Flat's May 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 36° and 54°. The average high for May is 70° 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 Grass Flat. See also: June | July | August.
