S
M
T
W
T
F
S
26
47°
36°
27
49°
34°
28
63°
29°
29
66°
35°
30
73°
42°
1
75°
43°
2
72°
44°
3
66°
48°
4
49°
37°
5
53°
38°
6
71°
36°
7
78°
45°
8
77°
47°
9
78°
48°
10
84°
52°
11
83°
60°
12
88°
54°
13
68°
52°
14
73°
46°
15
78°
49°
16
69°
45°
17
62°
46°
18
65°
40°
19
71°
44°
20
76°
41°
21
72°
45°
22
74°
48°
23
76°
49°
24
72°
47°
25
71°
50°
26
56°
45°
27
52°
38°
28
55°
35°
29
58°
39°
30
70°
40°
31
75°
42°
1
75°
48°
2
79°
48°
3
81°
51°
4
84°
52°
5
82°
59°
6
74°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Crestline
Crestline'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 Crestline. See also: June | July | August.