S
M
T
W
T
F
S
31
77°
54°
1
76°
56°
2
76°
56°
3
77°
55°
4
76°
56°
5
74°
58°
6
76°
59°
7
77°
56°
8
76°
57°
9
82°
58°
10
83°
59°
11
81°
59°
12
81°
58°
13
82°
60°
14
81°
57°
15
83°
61°
16
83°
60°
17
82°
61°
18
83°
61°
19
83°
60°
20
82°
61°
21
83°
61°
22
84°
60°
23
84°
61°
24
83°
61°
25
84°
60°
26
83°
61°
27
84°
60°
28
82°
57°
29
80°
58°
30
82°
59°
1
83°
60°
2
84°
62°
3
85°
62°
4
84°
61°
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 74° to 85°, with overnight lows between 55° and 62°. The average high for June is 81° 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 Fallbrook. See also: July | August | September.
