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
76°
51°
20
67°
46°
21
71°
53°
22
66°
59°
23
72°
58°
24
76°
59°
25
76°
60°
26
78°
61°
27
79°
63°
28
80°
64°
29
79°
62°
30
79°
63°
31
81°
62°
1
80°
59°
2
83°
62°
3
75°
59°
4
75°
56°
5
77°
63°
6
82°
64°
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 66° to 83°, with overnight lows between 46° and 64°. The average high for May is 76° 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.
