S
M
T
W
T
F
S
26
79°
44°
27
69°
58°
28
61°
51°
29
61°
42°
30
64°
38°
1
60°
38°
2
59°
40°
3
74°
44°
4
78°
55°
5
58°
46°
6
59°
40°
7
67°
39°
8
66°
50°
9
79°
50°
10
69°
46°
11
73°
44°
12
83°
51°
13
73°
49°
14
73°
44°
15
81°
51°
16
78°
63°
17
85°
63°
18
75°
63°
19
75°
55°
20
68°
51°
21
73°
49°
22
68°
59°
23
78°
62°
24
81°
60°
25
82°
54°
26
84°
61°
27
86°
59°
28
84°
58°
29
79°
59°
30
84°
56°
31
78°
56°
1
79°
56°
2
85°
58°
3
80°
59°
4
78°
62°
5
84°
62°
6
85°
65°
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 78° to 86°, with overnight lows between 56° and 65°. The average high for May is 82° 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.
