January weather forecast and climate
Posts, CA

Weather in January

January, the same as December, in Posts, California, is a moderate winter month, with temperature in the range of an average high of 58.5°F (14.7°C) and an average low of 47.7°F (8.7°C).

Temperature

In Posts, the average high-temperature in January is relatively the same as in December - a still moderate 58.5°F (14.7°C). The average low-temperature, is 47.7°F (8.7°C).

Humidity

The average relative humidity in Posts, California, is 72%.

Rainfall

In Posts, it is raining for 9.1 days, with typically 2.09" (53mm) of accumulated precipitation. In Posts, California, during the entire year, the rain falls for 70 days and collects up to 11.93" (303mm) of precipitation.

Daylight

In Posts, the average length of the day in January is 10h.

Sunshine

The average sunshine in January is 6.3h.

UV index

In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 in January interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Posts?

The average high-temperature, in January, in Posts, is 58.5°F (14.7°C), while the average low-temperature is 47.7°F (8.7°C).

What is the average humidity in January in Posts?

In January, the average relative humidity in Posts, California, is 72%.

How many days does it rain in January in Posts?

In Posts, California, in January, it is raining for 9.1 days, with typically 2.09" (53mm) of accumulated precipitation.

What is the average length of the day in January in Posts?

The average length of the day in January is 10h.

How long on average sun shines in January in Posts?

In January, the average sunshine is 6.3h.

How high is the UV index in January in Posts?

The average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in January
Posts, CA

Average temperature in January - Posts, CA
  • Average high temperature in January: 58.5°F

The warmest month (with the highest average high temperature) is September (69.6°F).
The month with the lowest average high temperature is December (57°F).

  • Average low temperature in January: 47.7°F

The month with the highest average low temperature is September (55.4°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).

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Average pressure in January
Posts, CA

Average pressure in January - Posts, CA
  • Average pressure in January: 30.13"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.93").

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Average wind speed in January
Posts, CA

Average wind speed in January - Posts, CA
  • Average wind speed in January: 7mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in January
Posts, CA

Average humidity in January - Posts, CA
  • Average humidity in January: 72%

The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is November (70%).

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Average rainfall in January
Posts, CA

Average rainfall in January - Posts, CA
  • Average rainfall in January: 2.09"

The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in January
Posts, CA

Average rainfall days in January - Posts, CA
  • Average rainfall days in January: 9.1 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (1.3 days).

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

Average daylight in January / Average sunshine in January - Posts, CA
  • Average daylight in January: 10h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in January: 6.3h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in January
Posts, CA

Average sunshine days in January - Posts, CA
  • Average sunshine days in January: 20.2 days

The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (17.3 days).

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Average UV index in January
Posts, CA

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

Months with the highest UV index are June, July, August and September (UV index 5).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in January
Posts, CA

Average cloud cover in January - Posts, CA
  • Average cloud cover in January: 30

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 13).

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Average visibility in January
Posts, CA

Average visibility in January - Posts, 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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