S
M
T
W
T
F
S
29
86°
57°
30
72°
55°
31
68°
61°
1
72°
52°
2
68°
49°
3
80°
50°
4
87°
49°
5
81°
51°
6
75°
52°
7
76°
56°
8
74°
56°
9
70°
54°
10
68°
53°
11
71°
54°
12
74°
52°
13
76°
52°
14
77°
53°
15
72°
49°
16
73°
52°
17
73°
53°
18
72°
52°
19
69°
51°
20
68°
49°
21
68°
48°
22
67°
46°
23
67°
47°
24
68°
47°
25
73°
49°
26
75°
50°
27
75°
53°
28
76°
53°
29
73°
52°
30
74°
53°
1
76°
54°
2
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Fallbrook
Fallbrook's April 2026 forecast shows daily high temperatures ranging from 67° to 87°, with overnight lows between 46° and 56°. The average high for April is 73° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Fallbrook. See also: May | June | July.
