S
M
T
W
T
F
S
26
71°
45°
27
56°
45°
28
60°
47°
29
71°
43°
30
81°
51°
1
74°
54°
2
72°
50°
3
91°
57°
4
74°
54°
5
63°
54°
6
67°
54°
7
71°
51°
8
69°
51°
9
78°
51°
10
69°
54°
11
81°
51°
12
82°
59°
13
64°
52°
14
62°
50°
15
56°
47°
16
56°
44°
17
64°
42°
18
70°
48°
19
66°
49°
20
73°
49°
21
83°
52°
22
78°
51°
23
78°
51°
24
74°
53°
25
65°
48°
26
69°
51°
27
71°
50°
28
68°
50°
29
68°
50°
30
70°
52°
31
76°
54°
1
71°
51°
2
77°
56°
3
76°
54°
4
74°
52°
5
69°
49°
6
75°
54°
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 65° to 83°, with overnight lows between 48° and 56°. The average high for May is 73° with an average low of 51°. 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.
