January weather forecastCorona, CA

Colorful beach homes along the Pacific Ocean facing the calm turquoise-blue ocean water in Corona del Mar, CaliforniaColorful beach homes along the Pacific Ocean facing the calm turquoise-blue ocean water in Corona del Mar, California

January

Weather in January

January, like December, in Corona, California, is another refreshing winter month, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 48°F (8.9°C).

Temperature

Transitioning into January, Corona records an average high-temperature of a still enjoyable 66.2°F (19°C), almost identical to December's 63.5°F (17.5°C). Throughout January, a steady low-temperature average of 48°F (8.9°C) is noted.

Humidity

In January, the average relative humidity is 51%.

Rainfall

In Corona, in January, during 5.3 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 53.9 rainfall days, and 8.86" (225mm) of precipitation is accumulated.

Daylight

In January, the average length of the day is 10h and 12min.
On the first day of January, sunrise is at 6:55 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 5:19 pm PST.

Sunshine

The average sunshine in January is 6.9h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 4 during January translates into these guidelines:
Prioritize safety - Recommendations to avert sunburn are shared. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During January, Corona experiences an average high-temperature of 66.2°F (19°C) and a low-temperature of 48°F (8.9°C).

The average relative humidity in January is 51%.

In Corona, in January, it is raining for 5.3 days, with typically 1.38" (35mm) of accumulated precipitation.

The average day length in January is 10h and 12min.

On the first day of January, sunrise is at 6:55 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 5:19 pm PST.

In January, the average sunshine duration is 6.9h.

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index.

In Corona, the average daily maximum UV index in January is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Corona, CA

  • Average high temperature in January: 66.2°F

The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is December (63.5°F).

  • Average low temperature in January: 48°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).

Average pressure in January
Corona, CA

  • Average pressure in January: 30.1"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in January
Corona, CA

  • Average wind speed in January: 5mph

The windiest months (with the highest average wind speed) are April and May (5.4mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

Average humidity in January
Corona, CA

  • Average humidity in January: 51%

The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is November (48%).

Average rainfall in January
Corona, CA

  • Average rainfall in January: 1.38"

The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in January
Corona, CA

  • Average rainfall days in January: 5.3 days

The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.3 days).

Average daylight in January /
Average sunshine in January
Corona, CA

  • Average daylight in January: 10h and 12min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in January: 6h and 54min

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in January
Corona, CA

  • Average sunshine days in January: 24.6 days

The month with the most sunshine days is June (27.1 days).
The month with the least sunshine days is February (20.8 days).

Average UV index in January
Corona, CA

  • Average UV index in January: 4

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).

Average cloud cover in January
Corona, CA

  • Average cloud cover in January: 21

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in January
Corona, CA

  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).