S
M
T
W
T
F
S
26
88°
59°
27
81°
65°
28
78°
64°
29
82°
63°
30
87°
69°
1
79°
64°
2
69°
55°
3
78°
50°
4
77°
49°
5
79°
52°
6
82°
70°
7
83°
74°
8
82°
69°
9
76°
66°
10
81°
67°
11
86°
65°
12
76°
66°
13
83°
64°
14
87°
64°
15
80°
56°
16
83°
58°
17
85°
70°
18
83°
68°
19
85°
69°
20
85°
71°
21
85°
67°
22
85°
74°
23
84°
72°
24
86°
74°
25
85°
75°
26
87°
74°
27
83°
75°
28
81°
75°
29
79°
74°
30
81°
73°
31
81°
68°
1
84°
69°
2
83°
72°
3
85°
71°
4
83°
70°
5
84°
71°
6
82°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port St. Joe
Port St. Joe's May 2026 forecast shows daily high temperatures ranging from 79° to 87°, with overnight lows between 68° and 75°. The average high for May is 83° with an average low of 72°. 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 Port St. Joe. See also: June | July | August.
