S
M
T
W
T
F
S
26
60°
46°
27
70°
45°
28
60°
49°
29
62°
53°
30
70°
50°
1
67°
45°
2
62°
50°
3
64°
43°
4
76°
56°
5
87°
63°
6
74°
53°
7
64°
43°
8
65°
44°
9
67°
51°
10
76°
57°
11
66°
51°
12
64°
46°
13
69°
53°
14
71°
55°
15
72°
54°
16
74°
55°
17
75°
53°
18
77°
58°
19
76°
57°
20
77°
59°
21
77°
58°
22
75°
51°
23
69°
50°
24
69°
51°
25
70°
53°
26
72°
53°
27
70°
52°
28
71°
54°
29
72°
53°
30
71°
58°
31
74°
61°
1
77°
61°
2
73°
58°
3
74°
59°
4
78°
62°
5
79°
62°
6
81°
63°
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 64° to 87°, with overnight lows between 43° and 63°. The average high for May is 73° with an average low of 55°. 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.
