S
M
T
W
T
F
S
31
93°
71°
1
93°
72°
2
91°
68°
3
89°
69°
4
85°
70°
5
82°
68°
6
79°
70°
7
83°
73°
8
90°
70°
9
88°
70°
10
89°
71°
11
88°
69°
12
89°
68°
13
85°
69°
14
87°
68°
15
88°
69°
16
87°
68°
17
90°
72°
18
91°
71°
19
90°
72°
20
91°
72°
21
91°
71°
22
90°
73°
23
92°
73°
24
92°
74°
25
93°
74°
26
93°
73°
27
94°
74°
28
93°
74°
29
93°
73°
30
94°
74°
1
93°
73°
2
94°
74°
3
94°
74°
4
93°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. Jo
St. Jo's June 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 68° and 74°. The average high for June is 90° with an average low of 71°. 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. Jo. See also: July | August | September.