S
M
T
W
T
F
S
26
77°
57°
27
87°
71°
28
81°
65°
29
73°
55°
30
67°
53°
1
74°
48°
2
74°
44°
3
82°
41°
4
80°
60°
5
77°
52°
6
61°
50°
7
73°
48°
8
83°
56°
9
85°
64°
10
80°
50°
11
78°
51°
12
81°
57°
13
85°
63°
14
82°
64°
15
85°
66°
16
87°
67°
17
84°
65°
18
81°
59°
19
82°
63°
20
82°
62°
21
84°
57°
22
76°
56°
23
77°
57°
24
77°
59°
25
75°
57°
26
76°
57°
27
78°
58°
28
79°
58°
29
80°
62°
30
81°
65°
31
79°
66°
1
81°
66°
2
82°
62°
3
80°
67°
4
82°
67°
5
82°
68°
6
80°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Petit Jean
Petit Jean's May 2026 forecast shows daily high temperatures ranging from 61° to 87°, with overnight lows between 48° and 68°. The average high for May is 80° with an average low of 60°. 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 Petit Jean. See also: June | July | August.