S
M
T
W
T
F
S
26
66°
34°
27
67°
37°
28
73°
36°
29
75°
40°
30
82°
42°
1
81°
48°
2
83°
51°
3
85°
50°
4
81°
54°
5
80°
52°
6
84°
47°
7
86°
47°
8
81°
47°
9
88°
46°
10
80°
50°
11
88°
47°
12
87°
54°
13
71°
52°
14
78°
44°
15
72°
48°
16
64°
45°
17
67°
44°
18
76°
37°
19
80°
41°
20
81°
45°
21
89°
45°
22
89°
51°
23
84°
53°
24
89°
52°
25
83°
45°
26
62°
44°
27
68°
48°
28
82°
50°
29
77°
44°
30
73°
39°
31
74°
44°
1
82°
50°
2
89°
53°
3
90°
52°
4
91°
53°
5
77°
46°
6
79°
47°
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 62° to 91°, with overnight lows between 39° and 53°. The average high for May is 80° with an average low of 48°. 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.
