January weather forecast
Placentia, CA

Weather in January

January, like December, in Placentia, California, is another enjoyable winter month, with an average temperature varying between 66.6°F (19.2°C) and 50.5°F (10.3°C).

Temperature

In Placentia, the average high-temperature in January is essentially the same as in December - a still enjoyable 66.6°F (19.2°C). In January, the average low-temperature is 50.5°F (10.3°C).

Humidity

In January, the average relative humidity in Placentia is 53%.

Rainfall

In Placentia, it is raining for 5.3 days, with typically 1.34" (34mm) of accumulated precipitation. In Placentia, during the entire year, the rain falls for 53.2 days and collects up to 7.72" (196mm) of precipitation.

Daylight

The average length of the day in January is 10h and 12min.
On the first day of January, sunrise is at 6:56 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 5:21 pm PST.

Sunshine

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 moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in January transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in January in Placentia?

The average high-temperature, in January, is 66.6°F (19.2°C), while the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in January in Placentia?

The average relative humidity in January in Placentia, California, is 53%.

How many days does it rain in January in Placentia?

In Placentia, California, in January, it is raining for 5.3 days, with typically 1.34" (34mm) of accumulated precipitation.

How many hours of daylight does Placentia have in January?

In Placentia, the average day length in January is 10h and 12min.

What time are sunrise and sunset in January in Placentia?

In January, on the first day of the month, sunrise is at 6:56 am and sunset at 4:53 pm. On the last day of the month, in Placentia, California, sunrise is at 6:48 am and sunset at 5:21 pm PST.

How many hours of sunshine does Placentia have in January?

In January, the average sunshine duration in Placentia is 6.9h.

What are the months with the lowest UV index in Placentia?

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

What is the UV index reading in January in Placentia?

The average daily maximum UV index in January in Placentia is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Placentia, CA

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).

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Average pressure in January
Placentia, CA

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).

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Average wind speed in January
Placentia, CA

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).

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Average humidity in January
Placentia, CA

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%).

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Average rainfall in January
Placentia, CA

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").

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Average rainfall days in January
Placentia, CA

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).

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

Average daylight in January / Average sunshine in January - Placentia, CA
  • Average daylight in January: 10h and 12min

The month with the longest days is June (Average daylight: 14h and 22min).
The month with the shortest days is December (Average daylight: 9h and 56min).

  • Average sunshine in January: 6h and 54min

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).

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Average sunshine days in January
Placentia, CA

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).

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Average UV index in January
Placentia, CA

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).

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Average cloud cover in January
Placentia, CA

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).

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Average visibility in January
Placentia, CA

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).

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