S
M
T
W
T
F
S
26
66°
28°
27
69°
33°
28
69°
36°
29
75°
41°
30
77°
43°
1
79°
39°
2
83°
48°
3
86°
47°
4
86°
48°
5
84°
53°
6
85°
47°
7
82°
52°
8
78°
46°
9
78°
52°
10
78°
46°
11
78°
50°
12
84°
56°
13
76°
49°
14
76°
48°
15
75°
48°
16
72°
49°
17
65°
45°
18
73°
44°
19
74°
47°
20
72°
48°
21
71°
44°
22
67°
43°
23
72°
46°
24
76°
50°
25
77°
50°
26
74°
44°
27
69°
46°
28
74°
49°
29
75°
50°
30
77°
50°
31
79°
51°
1
80°
52°
2
80°
51°
3
70°
46°
4
69°
49°
5
75°
51°
6
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Keller
Keller's May 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 43° and 56°. The average high for May is 75° with an average low of 48°. 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 Keller. See also: June | July | August.
