Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Fullerton Weather in January
January in Fullerton sees daytime temperatures around 21°C (70°F) and lows of 8°C (46°F) at night. The excellent weather makes it a good time to visit.
Rainfall in Fullerton in January
Historically, the month has about 5 days of rain, averaging 46 mm (1.8 in) in total. Although rain is not especially frequent, individual showers can still be quite heavy.
Temperature in Fullerton in January
The temperature in Fullerton in January is excellent. Daytime highs reach 21°C (70°F), with nights dropping to 8°C (46°F). The month of January belongs to the winter season. The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Fullerton in January
Expect sunny days throughout the month, with an estimated 198 hours of sunshine. This makes it a pleasant time to visit Fullerton.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April, May, June, October, November and December typically offer the best circumstances for Fullerton.
Fullerton Temperature in January
Min Temperature
8°C (46°F)
Max Temperature
21°C (70°F)
Chance of Rain
17%
Precipitation
46 mm (1.8 in)
Rainy days
5 days
Sunshine
198 hours *
Percentage Sunshine
*
* Data from: Corona, the United States of America (33 KM, 20 Miles).
Fullerton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Fullerton - and find the best time to visit.
Best Places in the United States of America in January
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in January →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Fullerton in January
Pleasant temperatures in January mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Fullerton in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling10/10 -
Walking10/10 -
Camping5/10 -
Outdoor sports10/10
Fullerton 3-Day Forecast
More climate data for Fullerton
See the full Fullerton climate overview or explore weather in the United States of America.
Popular in January
Where to go in January - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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