S
M
T
W
T
F
S
26
84°
61°
27
81°
65°
28
73°
64°
29
81°
64°
30
72°
58°
1
66°
54°
2
70°
48°
3
71°
41°
4
80°
46°
5
78°
57°
6
80°
66°
7
73°
54°
8
70°
52°
9
77°
58°
10
84°
63°
11
79°
63°
12
79°
60°
13
82°
54°
14
76°
51°
15
81°
58°
16
85°
62°
17
89°
68°
18
89°
69°
19
88°
70°
20
84°
67°
21
85°
65°
22
82°
64°
23
85°
64°
24
85°
67°
25
87°
67°
26
86°
68°
27
85°
63°
28
84°
68°
29
85°
68°
30
82°
67°
31
83°
64°
1
82°
65°
2
86°
67°
3
87°
68°
4
88°
69°
5
88°
69°
6
87°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Crestline Heights
Crestline Heights's May 2026 forecast shows daily high temperatures ranging from 76° to 89°, with overnight lows between 51° and 70°. The average high for May is 85° with an average low of 66°. 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 Crestline Heights. See also: June | July | August.