S
M
T
W
T
F
S
26
55°
41°
27
56°
38°
28
63°
40°
29
56°
36°
30
58°
44°
1
61°
44°
2
59°
39°
3
63°
44°
4
67°
49°
5
69°
48°
6
68°
50°
7
71°
51°
8
72°
52°
9
72°
49°
10
65°
46°
11
61°
45°
12
62°
46°
13
64°
50°
14
63°
47°
15
67°
47°
16
69°
53°
17
73°
52°
18
69°
42°
19
66°
42°
20
64°
43°
21
65°
42°
22
64°
43°
23
66°
46°
24
64°
51°
25
67°
52°
26
72°
49°
27
69°
47°
28
68°
57°
29
68°
55°
30
81°
48°
31
70°
55°
1
71°
50°
2
73°
55°
3
73°
60°
4
80°
51°
5
78°
50°
6
70°
51°
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 55° to 81°, with overnight lows between 36° and 60°. The average high for May is 67° with an average low of 48°. 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.
