S
M
T
W
T
F
S
26
81°
49°
27
82°
62°
28
70°
57°
29
66°
49°
30
65°
42°
1
63°
43°
2
61°
42°
3
71°
37°
4
81°
58°
5
69°
46°
6
63°
45°
7
66°
39°
8
74°
46°
9
79°
55°
10
73°
58°
11
75°
46°
12
80°
49°
13
76°
53°
14
73°
44°
15
82°
54°
16
83°
73°
17
88°
68°
18
81°
66°
19
84°
72°
20
66°
61°
21
67°
59°
22
66°
63°
23
72°
63°
24
78°
59°
25
81°
63°
26
78°
65°
27
82°
65°
28
84°
65°
29
79°
60°
30
81°
58°
31
78°
57°
1
78°
60°
2
79°
58°
3
82°
64°
4
80°
64°
5
83°
66°
6
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Johns
St. Johns's May 2026 forecast shows daily high temperatures ranging from 78° to 84°, with overnight lows between 57° and 66°. The average high for May is 81° with an average low of 62°. 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 St. Johns. See also: June | July | August.
