S
M
T
W
T
F
S
31
86°
59°
1
83°
60°
2
81°
56°
3
85°
57°
4
88°
61°
5
87°
60°
6
80°
59°
7
79°
60°
8
80°
58°
9
82°
59°
10
91°
64°
11
91°
63°
12
94°
67°
13
88°
68°
14
87°
67°
15
90°
65°
16
86°
65°
17
83°
61°
18
76°
60°
19
76°
58°
20
79°
56°
21
80°
57°
22
87°
59°
23
85°
60°
24
88°
64°
25
85°
58°
26
82°
58°
27
77°
59°
28
71°
59°
29
74°
59°
30
79°
60°
1
81°
59°
2
87°
60°
3
88°
61°
4
90°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Fontana
Fontana's June 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 59° and 63°. The average high for June is 85° with an average low of 61°. 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 Fontana. See also: July | August | September.
