THINGS TO DO · YOUTUBE SHORT
Fullerton Community Park
A local activity Short shared by Owen's Travels.
Watch on YouTube ↗
Weather · December
Fullerton weather in December
Average highs of 68°F, lows of 46°F and 1.9 in of rain, from 30 years of weather records.
December is Fullerton’s coldest month, with average highs of 68°F and lows of 46°F. That is 6° cooler than November, and 8° below the yearly average high.
- Average high
- 68°F
- Average low
- 46°F
- Precipitation
- 1.9 in
- Wet days
- 6
- Sunrise · sunset
- 6:49 AM · 4:44 PM
December across the year
High and low Rain
What to wear in December
- Mild days: dress in layers, with a light jacket or sweater for mornings and evenings.
December is good for
What’s on in Fullerton in December
- Winter MarketSaturday, December 5 · 2-6 p.m. · Downtown Fullerton Plaza
- Electric Company Theatre: The Tipsy ElfThursday, December 10 · 7 p.m. · Muckenthaler Cultural Center, west Fullerton
- Deck the Hall at Cal State FullertonDecember 12 – December 13 · Meng Concert Hall, Clayes Performing Arts Center, Cal State Fullerton
- Holiday Festival at the MuckenthalerSunday, December 13 · Noon-4 p.m. · Muckenthaler Cultural Center, west Fullerton
- Darden Holiday ConcertWednesday, December 16 · 7:30 p.m. · Muckenthaler Cultural Center, west Fullerton
- Nouveau Chamber Ballet: The NutcrackerDecember 19 – December 20 · 2 p.m. · Fullerton College Campus Theatre
See all upcoming events and school days off.
Around Fullerton
See Fullerton
A look around town before you go.
THINGS TO DO · YOUTUBE SHORT
having fun at the hiking trail fullerton california have a great day!
A local activity Short shared by Franz ScottLee.
Watch on YouTube ↗December compared with the months around it
Planning a trip? See the best time to visit Fullerton and today’s forecast.
Questions
How hot does it get in Fullerton in December?
Average highs are 68°F and average lows 46°F, for a daily mean of 57°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Fullerton in December?
December averages 1.9 in of precipitation over about 6 days with at least 0.01 in. It is the 3rd wettest month of the year.
What time is sunset in Fullerton in December?
Around mid-December the sun rises about 6:49 AM and sets about 4:44 PM, for roughly 9.9 hours of daylight.
Is December a good time to visit Fullerton?
The mildest months for visiting are May, June, July. December is mild, with Christmas lights and New Year’s Eve events.
NOAA U.S. Climate Normals 1991–2020, Fullerton Muni Ap station (2.9 mi from downtown). Sunrise and sunset are calculated for December 15 at the city’s coordinates.