S
M
T
W
T
F
S
26
65°
53°
27
67°
51°
28
74°
43°
29
73°
54°
30
70°
54°
1
66°
53°
2
58°
50°
3
68°
43°
4
74°
46°
5
77°
53°
6
83°
56°
7
73°
54°
8
71°
51°
9
75°
55°
10
81°
62°
11
83°
56°
12
70°
48°
13
78°
59°
14
76°
49°
15
76°
56°
16
82°
65°
17
87°
67°
18
84°
65°
19
83°
66°
20
85°
67°
21
82°
65°
22
81°
65°
23
80°
64°
24
81°
62°
25
78°
63°
26
81°
72°
27
84°
68°
28
85°
67°
29
85°
68°
30
84°
68°
31
85°
67°
1
81°
67°
2
82°
68°
3
80°
67°
4
80°
66°
5
81°
68°
6
83°
69°
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 76° to 87°, with overnight lows between 49° and 72°. The average high for May is 82° 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.
