S
M
T
W
T
F
S
26
85°
67°
27
75°
61°
28
85°
66°
29
91°
70°
30
86°
62°
1
82°
68°
2
84°
66°
3
76°
62°
4
78°
64°
5
83°
66°
6
83°
68°
7
85°
66°
8
84°
66°
9
86°
65°
10
81°
64°
11
84°
67°
12
84°
69°
13
86°
69°
14
87°
68°
15
86°
68°
16
83°
64°
17
82°
64°
18
82°
65°
19
84°
66°
20
86°
67°
21
86°
68°
22
87°
68°
23
88°
70°
24
86°
71°
25
84°
69°
26
88°
72°
27
89°
72°
28
85°
71°
29
84°
72°
30
84°
72°
31
83°
73°
1
84°
73°
2
85°
72°
3
83°
73°
4
85°
73°
5
86°
74°
6
85°
74°
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 91°, with overnight lows between 61° and 74°. The average high for May is 84° with an average low of 68°. 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.
