January weather forecast and climate
Arcadia, CA

Weather in January

January, the same as December, is another comfortable winter month in Arcadia, California, with average temperature ranging between min 47.1°F (8.4°C) and max 64.8°F (18.2°C).

Temperature

In Arcadia, the average high-temperature in January is essentially the same as in December - a still enjoyable 64.8°F (18.2°C). In Arcadia, California, the average low-temperature is 47.1°F (8.4°C).

Humidity

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

Rainfall

In January, the rain falls for 5.3 days. Throughout January, 1.18" (30mm) of precipitation is accumulated. Throughout the year, there are 48.7 rainfall days, and 7.48" (190mm) of precipitation is accumulated.

Daylight

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

Sunshine

January, February and December, with an average of 6.9h of sunshine, are months with the least sunshine.

UV index

In Arcadia, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: In January, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. 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 Arcadia?

In January, in Arcadia, California, the average high-temperature is 64.8°F (18.2°C), and the average low-temperature is 47.1°F (8.4°C).

What is the average humidity in January in Arcadia?

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

How much does it rain in Arcadia in January?

In Arcadia, in January, during 5.3 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

How many hours of daylight does Arcadia have in January?

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

What is the month with the least sunshine in Arcadia?

Months with the least sunshine in Arcadia, California, are January, February and December, with an average of 6.9h of sunshine.

How long on average sun shines in January in Arcadia?

In Arcadia, the average sunshine in January is 6.9h.

How high is the UV index in January in Arcadia?

The average daily maximum UV index in January in Arcadia is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in January
Arcadia, CA

Average temperature in January - Arcadia, CA
  • Average high temperature in January: 64.8°F

The warmest month (with the highest average high temperature) is August (88.2°F).
The month with the lowest average high temperature is December (62.1°F).

  • Average low temperature in January: 47.1°F

The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (46.2°F).

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Average pressure in January
Arcadia, CA

Average pressure in January - Arcadia, CA
  • Average pressure in January: 30.11"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in January
Arcadia, CA

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

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity in January
Arcadia, CA

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

Months with the highest relative humidity are March, May and June (56%).
The month with the lowest relative humidity is November (46%).

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Average rainfall in January
Arcadia, CA

Average rainfall in January - Arcadia, CA
  • Average rainfall in January: 1.18"

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in January
Arcadia, CA

Average rainfall days in January - Arcadia, CA
  • Average rainfall days in January: 5.3 days

The month with the highest number of rainy days is March (6.5 days).
The month with the least rainy days is June (1.3 days).

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

Average daylight in January / Average sunshine in January - Arcadia, 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: 6.9h

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are January, February and December (Average sunshine: 6.9).

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Average sunshine days in January
Arcadia, CA

Average sunshine days in January - Arcadia, CA
  • Average sunshine days in January: 25.1 days

The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is February (22 days).

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Average UV index in January
Arcadia, CA

Average UV index in January - Arcadia, CA
  • Average UV index in January: 4

Months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in January
Arcadia, CA

Average cloud cover in January - Arcadia, CA
  • Average cloud cover in January: 20

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
Arcadia, CA

Average visibility in January - Arcadia, 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).

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