S
M
T
W
T
F
S
26
84°
71°
27
85°
74°
28
87°
73°
29
77°
64°
30
64°
58°
1
58°
52°
2
74°
52°
3
79°
57°
4
82°
66°
5
87°
72°
6
80°
55°
7
61°
57°
8
77°
63°
9
85°
65°
10
88°
63°
11
78°
55°
12
84°
61°
13
89°
66°
14
87°
63°
15
86°
66°
16
87°
67°
17
83°
62°
18
78°
65°
19
80°
66°
20
83°
66°
21
83°
61°
22
80°
59°
23
79°
60°
24
81°
62°
25
80°
61°
26
79°
60°
27
80°
61°
28
81°
61°
29
80°
67°
30
81°
67°
31
82°
68°
1
83°
68°
2
84°
67°
3
85°
69°
4
87°
69°
5
84°
68°
6
81°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Jacksonville
Jacksonville's May 2026 forecast shows daily high temperatures ranging from 61° to 89°, with overnight lows between 55° and 72°. The average high for May is 82° with an average low of 64°. 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 Jacksonville. See also: June | July | August.
