S
M
T
W
T
F
S
26
84°
67°
27
72°
66°
28
82°
66°
29
92°
68°
30
89°
72°
1
85°
70°
2
72°
62°
3
74°
58°
4
79°
61°
5
82°
64°
6
91°
68°
7
91°
71°
8
80°
69°
9
80°
68°
10
82°
72°
11
91°
72°
12
78°
70°
13
83°
69°
14
89°
68°
15
79°
67°
16
88°
71°
17
87°
74°
18
N/A
19
88°
68°
20
87°
69°
21
88°
71°
22
89°
71°
23
90°
75°
24
89°
74°
25
88°
73°
26
89°
75°
27
90°
74°
28
90°
73°
29
89°
72°
30
88°
73°
31
86°
71°
1
88°
70°
2
89°
73°
3
89°
74°
4
85°
73°
5
86°
74°
6
86°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Saint Johns
Saint Johns's May 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 68° and 75°. The average high for May is 88° with an average low of 72°. 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 Saint Johns. See also: June | July | August.
