S
M
T
W
T
F
S
26
65°
44°
27
70°
36°
28
74°
30°
29
75°
34°
30
73°
51°
1
71°
47°
2
71°
43°
3
74°
48°
4
71°
48°
5
63°
41°
6
65°
37°
7
77°
42°
8
83°
49°
9
88°
50°
10
83°
51°
11
82°
48°
12
82°
46°
13
83°
50°
14
77°
43°
15
74°
47°
16
73°
48°
17
74°
48°
18
75°
47°
19
76°
48°
20
76°
47°
21
74°
49°
22
80°
50°
23
83°
51°
24
78°
47°
25
75°
45°
26
75°
45°
27
77°
47°
28
79°
52°
29
85°
52°
30
87°
53°
31
82°
52°
1
79°
52°
2
81°
53°
3
84°
54°
4
86°
54°
5
88°
55°
6
85°
55°
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 63° to 88°, with overnight lows between 37° and 55°. The average high for May is 78° 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.
