S
M
T
W
T
F
S
31
78°
47°
1
67°
44°
2
69°
54°
3
69°
49°
4
67°
51°
5
67°
46°
6
68°
45°
7
67°
47°
8
71°
46°
9
68°
49°
10
68°
51°
11
66°
47°
12
70°
48°
13
72°
52°
14
77°
55°
15
79°
56°
16
73°
49°
17
72°
49°
18
69°
55°
19
78°
55°
20
74°
53°
21
78°
54°
22
71°
50°
23
69°
49°
24
70°
48°
25
72°
56°
26
80°
55°
27
83°
60°
28
82°
58°
29
82°
51°
30
74°
61°
1
81°
58°
2
73°
50°
3
72°
52°
4
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. Johns
St. Johns's June 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 44° and 61°. The average high for June is 73° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in St. Johns. See also: July | August | September.