Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The arrival of January sees a recorded average high-temperature of a still enjoyable 66.6°F (19.2°C), showing little divergence from the previous month's conditions. During January, the nighttime temperature averages to a fresh 50.5°F (10.3°C).Humidity
The average relative humidity in January in Placentia is 53%.Rainfall
In Placentia, during January, the rain falls for 5.3 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, there are 53.2 rainfall days, and 7.72" (196mm) of precipitation is accumulated.Daylight
In Placentia, the average length of the day in January is 10h and 12min.On the first day of the month, sunrise is at 6:56 am and sunset at 4:53 pm. On the last day of January, in Placentia, sunrise is at 6:48 am and sunset at 5:20 pm PST.
Sunshine
In Placentia, the average sunshine in January is 6.9h.UV index
January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Placentia. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In January, the maximum UV index of 4 translates into these guidelines:
Undertake precautions - Guarding against sun damage is counselled. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in January in Placentia?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does Placentia have in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Placentia, CA
- Average high temperature in January: 66.6°F
The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is December (64.2°F).
- Average low temperature in January: 50.5°F
The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure in January
Placentia, 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 (29.88"Hg).
Average wind speed in January
Placentia, CA
- Average wind speed in January: 5.1mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in January
Placentia, CA
- Average humidity in January: 53%
The month with the highest relative humidity is June (63%).
The month with the lowest relative humidity is November (50%).
Average rainfall in January
Placentia, CA
- Average rainfall in January: 1.34"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Placentia, CA
- Average rainfall days in January: 5.3 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.4 days).
Average daylight in January /
Average sunshine in January
Placentia, CA
- Average daylight in January: 10h and 1min
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 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 48min).
Average sunshine days in January
Placentia, CA
- Average sunshine days in January: 24.8 days
The month with the most sunshine days is August (26.7 days).
The month with the least sunshine days is February (20.7 days).
Average UV index in January
Placentia, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in January
Placentia, CA
- Average cloud cover in January: 20
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in January
Placentia, 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).
Placentia, California, USA
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