January weather forecast and climate
Whittier, CA

Weather in January

January, like December, in Whittier, California, is another enjoyable winter month, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 67.1°F (19.5°C).

Temperature

In January, the average high-temperature is essentially the same as in December - a still comfortable 67.1°F (19.5°C). In January, in Whittier, the average low-temperature is 50.5°F (10.3°C).

Humidity

In Whittier, the average relative humidity is 51%.

Rainfall

In Whittier, during January, the rain falls for 4.3 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Whittier, during the entire year, the rain falls for 38.2 days and collects up to 5.28" (134mm) of precipitation.

Daylight

The average length of the day in January is 10.2h.

Sunshine

In Whittier, the average sunshine is 6.8h.

UV index

The average daily maximum UV index in Whittier is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. 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.
[Resources]

FAQ

What is the temperature in January in Whittier?

In January, in Whittier, California, the average high-temperature is 67.1°F (19.5°C), and the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in January in Whittier?

In Whittier, the average relative humidity in January is 51%.

How many days does it rain in January in Whittier?

In Whittier, California, in January, it is raining for 4.3 days, with typically 0.94" (24mm) of accumulated precipitation.

How many hours of daylight does Whittier have in January?

In January, the average length of the day in Whittier is 10.2h.

How long on average sun shines in January in Whittier?

In January, the average sunshine in Whittier, California, is 6.8h.

How high is the UV index in January in Whittier?

The average daily maximum UV index in January in Whittier is 5. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.

Average temperature in January
Whittier, CA

Average temperature in January - Whittier, CA
  • Average high temperature in January: 67.1°F

The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is December (64.9°F).

  • Average low temperature in January: 50.5°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (49.8°F).

[Resources]

Average pressure in January
Whittier, CA

Average pressure in January - Whittier, CA
  • Average pressure in January: 30.1"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

[Resources]

Average wind speed in January
Whittier, CA

Average wind speed in January - Whittier, CA
  • Average wind speed in January: 5.4mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).

[Resources]

Average humidity in January
Whittier, CA

Average humidity in January - Whittier, CA
  • Average humidity in January: 51%

The month with the highest relative humidity is June (62%).
The month with the lowest relative humidity is November (47%).

[Resources]

Average rainfall in January
Whittier, CA

Average rainfall in January - Whittier, CA
  • Average rainfall in January: 0.94"

The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.04").

[Resources]

Average rainfall days in January
Whittier, CA

Average rainfall days in January - Whittier, CA
  • Average rainfall days in January: 4.3 days

The month with the highest number of rainy days is March (5.1 days).
The month with the least rainy days is June (1 days).

[Resources]

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

Average daylight in January / Average sunshine in January - Whittier, CA
  • Average daylight in January: 10.2h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in January: 6.8h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is February (Average sunshine: 6.7h).

[Resources]

Average sunshine days in January
Whittier, CA

Average sunshine days in January - Whittier, CA
  • Average sunshine days in January: 26.3 days

The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (22.6 days).

[Resources]

Average UV index in January
Whittier, CA

Average UV index in January - Whittier, CA
  • Average UV index in January: 5

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are February, November and December (UV index 4).

[Resources]

Average cloud cover in January
Whittier, CA

Average cloud cover in January - Whittier, CA
  • Average cloud cover in January: 21

Months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 6).

[Resources]

Average visibility in January
Whittier, CA

Average visibility in January - Whittier, CA
  • Average visibility in January: 6mi

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

[Resources]