S
M
T
W
T
F
S
26
84°
68°
27
92°
74°
28
85°
68°
29
68°
60°
30
63°
57°
1
66°
53°
2
76°
52°
3
81°
54°
4
83°
63°
5
89°
59°
6
68°
52°
7
75°
51°
8
76°
60°
9
88°
67°
10
79°
62°
11
78°
56°
12
83°
58°
13
90°
62°
14
89°
68°
15
89°
71°
16
88°
70°
17
88°
75°
18
91°
78°
19
90°
61°
20
80°
62°
21
79°
67°
22
87°
67°
23
84°
65°
24
87°
67°
25
87°
64°
26
87°
65°
27
84°
67°
28
87°
67°
29
91°
73°
30
93°
74°
31
94°
76°
1
94°
74°
2
95°
74°
3
91°
69°
4
87°
72°
5
86°
76°
6
89°
69°
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 ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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.