S
M
T
W
T
F
S
29
64°
45°
30
66°
45°
31
63°
41°
1
68°
39°
2
81°
46°
3
68°
46°
4
63°
46°
5
75°
50°
6
73°
48°
7
70°
45°
8
72°
52°
9
72°
45°
10
72°
48°
11
73°
43°
12
68°
48°
13
66°
46°
14
70°
45°
15
72°
43°
16
64°
46°
17
61°
43°
18
63°
43°
19
63°
39°
20
70°
45°
21
73°
45°
22
81°
52°
23
81°
54°
24
73°
46°
25
61°
43°
26
57°
45°
27
59°
39°
28
57°
39°
29
61°
45°
30
57°
43°
31
64°
41°
1
70°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Fallbrook
Fallbrook's January 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Fallbrook. See also: February | March | April.
