S
M
T
W
T
F
S
26
83°
64°
27
80°
60°
28
81°
55°
29
90°
64°
30
84°
70°
1
70°
60°
2
68°
54°
3
75°
47°
4
80°
50°
5
85°
58°
6
89°
62°
7
80°
69°
8
75°
62°
9
68°
61°
10
85°
65°
11
88°
65°
12
76°
59°
13
80°
58°
14
82°
63°
15
82°
55°
16
90°
63°
17
91°
66°
18
89°
65°
19
91°
65°
20
91°
69°
21
92°
69°
22
91°
71°
23
84°
71°
24
91°
69°
25
88°
71°
26
90°
70°
27
84°
69°
28
83°
67°
29
83°
68°
30
82°
69°
31
77°
62°
1
75°
61°
2
77°
60°
3
78°
61°
4
79°
61°
5
80°
63°
6
85°
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 75° to 90°, with overnight lows between 60° and 70°. The average high for May is 81° with an average low of 65°. 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.
