S
M
T
W
T
F
S
31
105°
77°
1
108°
75°
2
109°
74°
3
107°
70°
4
103°
67°
5
98°
64°
6
97°
68°
7
99°
69°
8
104°
73°
9
106°
71°
10
108°
67°
11
101°
66°
12
103°
67°
13
103°
67°
14
104°
68°
15
103°
69°
16
106°
72°
17
108°
73°
18
105°
71°
19
103°
70°
20
106°
74°
21
109°
73°
22
112°
73°
23
112°
74°
24
111°
82°
25
112°
83°
26
112°
81°
27
105°
79°
28
108°
80°
29
108°
80°
30
107°
75°
1
105°
73°
2
104°
76°
3
107°
81°
4
110°
83°
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 97° to 112°, with overnight lows between 64° and 83°. The average high for June is 106° with an average low of 73°. 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.