S
M
T
W
T
F
S
26
77°
54°
27
76°
55°
28
79°
56°
29
79°
56°
30
78°
57°
1
80°
57°
2
79°
58°
3
76°
55°
4
72°
51°
5
75°
57°
6
80°
58°
7
81°
59°
8
81°
59°
9
79°
58°
10
74°
58°
11
78°
57°
12
80°
59°
13
80°
60°
14
82°
60°
15
83°
61°
16
83°
61°
17
82°
60°
18
79°
61°
19
77°
60°
20
77°
59°
21
82°
61°
22
78°
55°
23
79°
56°
24
80°
59°
25
79°
58°
26
78°
57°
27
80°
61°
28
84°
63°
29
84°
63°
30
81°
59°
31
81°
58°
1
82°
58°
2
81°
59°
3
82°
62°
4
88°
63°
5
87°
64°
6
87°
60°
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 72° to 88°, with overnight lows between 51° and 64°. The average high for May is 80° with an average low of 59°. 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.
