S
M
T
W
T
F
S
31
76°
58°
1
74°
59°
2
77°
59°
3
70°
57°
4
70°
55°
5
71°
58°
6
75°
61°
7
78°
62°
8
75°
57°
9
71°
53°
10
70°
53°
11
71°
54°
12
71°
54°
13
73°
59°
14
74°
58°
15
72°
57°
16
73°
56°
17
72°
55°
18
72°
55°
19
73°
56°
20
73°
55°
21
75°
64°
22
79°
65°
23
80°
65°
24
77°
64°
25
77°
65°
26
78°
64°
27
81°
66°
28
84°
67°
29
86°
65°
30
86°
58°
1
81°
57°
2
77°
56°
3
78°
59°
4
79°
65°
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 70° to 86°, with overnight lows between 53° and 67°. The average high for June is 76° with an average low of 59°. 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.