Thursday
Sunny
High:
75°F
Sunny, with a high near 75.
Fullerton, CA Weather - Extended Forecast
Thursday Night
Mostly clear
Overnight low:
55°F
Mostly clear, with a low around 55.
Friday
Sunny
High:
78°F
Sunny, with a high near 78.
Friday Night
Mostly clear
Overnight low:
58°F
Mostly clear, with a low around 58.
Saturday
Sunny
High:
80°F
Saturday Night
Mostly clear
Overnight low:
58°F
Sunday
Mostly sunny
High:
77°F
Sunday Night
Clouds increasing
Overnight low:
57°F
Monday
Clouds clearing
High:
70°F