S
M
T
W
T
F
S
31
88°
57°
1
88°
58°
2
87°
58°
3
84°
57°
4
81°
58°
5
79°
57°
6
80°
55°
7
79°
52°
8
79°
51°
9
81°
54°
10
85°
55°
11
81°
55°
12
82°
57°
13
88°
58°
14
89°
58°
15
86°
57°
16
84°
55°
17
83°
54°
18
84°
54°
19
89°
56°
20
91°
57°
21
91°
57°
22
92°
56°
23
93°
54°
24
91°
52°
25
88°
52°
26
87°
55°
27
87°
57°
28
94°
57°
29
88°
53°
30
88°
54°
1
89°
54°
2
92°
55°
3
91°
56°
4
92°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Fallbrook
Fallbrook's June 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 51° and 60°. The average high for June is 87° with an average low of 56°. 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 Fallbrook. See also: July | August | September.
