S
M
T
W
T
F
S
31
76°
43°
1
77°
47°
2
76°
47°
3
80°
53°
4
86°
63°
5
84°
63°
6
84°
63°
7
84°
66°
8
85°
65°
9
81°
63°
10
80°
63°
11
81°
61°
12
78°
60°
13
79°
61°
14
78°
57°
15
73°
54°
16
72°
54°
17
73°
55°
18
75°
60°
19
80°
62°
20
83°
65°
21
78°
64°
22
82°
65°
23
76°
64°
24
77°
59°
25
76°
60°
26
83°
65°
27
80°
61°
28
76°
62°
29
77°
59°
30
78°
58°
1
78°
64°
2
84°
66°
3
83°
66°
4
78°
60°
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 72° to 86°, with overnight lows between 47° and 66°. The average high for June is 79° with an average low of 60°. 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.