S
M
T
W
T
F
S
26
65°
48°
27
79°
41°
28
77°
54°
29
69°
49°
30
58°
38°
1
58°
33°
2
56°
30°
3
63°
28°
4
71°
58°
5
75°
58°
6
60°
43°
7
59°
34°
8
65°
48°
9
64°
41°
10
65°
47°
11
64°
42°
12
65°
44°
13
66°
49°
14
66°
46°
15
67°
44°
16
71°
48°
17
73°
47°
18
75°
52°
19
72°
52°
20
77°
50°
21
73°
49°
22
68°
44°
23
65°
44°
24
67°
46°
25
68°
47°
26
67°
46°
27
68°
46°
28
68°
47°
29
69°
46°
30
70°
47°
31
75°
56°
1
71°
52°
2
72°
48°
3
72°
55°
4
74°
56°
5
76°
57°
6
80°
58°
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 59° to 80°, with overnight lows between 34° and 58°. The average high for May is 69° 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.
