January weather forecast
Atascadero, CA

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The Sunken Gardens Park overlooking the Atascadero City Hall in California
The Sunken Gardens Park overlooking the Atascadero City Hall in California

Weather in January

January in Atascadero, California, is an enjoyable winter month, with an average temperature ranging between max 61°F (16.1°C) and min 44.2°F (6.8°C).

Temperature

The advent of January reveals an average high-temperature of a comfortable 61°F (16.1°C), showing minimal difference from the prior month. Nighttime temperature experiences an average drop to a frosty 44.2°F (6.8°C) in January.

Humidity

The average relative humidity in January is 64%.

Rainfall

In Atascadero, during January, the rain falls for 6.7 days and regularly aggregates up to 1.69" (43mm) of precipitation. In Atascadero, during the entire year, the rain falls for 54.8 days and collects up to 8.66" (220mm) of precipitation.

Daylight

In January, the average length of the day in Atascadero is 10h and 5min.
On the first day of the month, sunrise is at 7:11 am and sunset at 5:00 pm. On the last day of January, in Atascadero, California, sunrise is at 7:03 am and sunset at 5:29 pm PST.

Sunshine

The average sunshine in January in Atascadero is 6.5h.

UV index

The average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 4 during January translates into the following directions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the usual temperature for Atascadero in January?

The high-temperature during January is 61°F (16.1°C) and the low-temperature is 44.2°F (6.8°C).

What is the average humidity in January in Atascadero?

In Atascadero, the average relative humidity in January is 64%.

How much does it rain in Atascadero in January?

In January, the rain falls for 6.7 days. Throughout January, 1.69" (43mm) of precipitation is accumulated.

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

In January, the average day length is 10h and 5min.

When are sunrise and sunset in January in Atascadero?

In January, on the first day of the month, sunrise is at 7:11 am and sunset at 5:00 pm. On the last day of the month, in Atascadero, California, sunrise is at 7:03 am and sunset at 5:29 pm PST.

How long on average sun shines in January in Atascadero?

In Atascadero, the average sunshine duration in January is 6.5h.

What is the UV index reading in January in Atascadero?

In Atascadero, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Atascadero, CA

Average temperature in January - Atascadero, CA
  • Average high temperature in January: 61°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is December (58.5°F).

  • Average low temperature in January: 44.2°F

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is December (42.8°F).

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Average pressure in January
Atascadero, CA

Average pressure in January - Atascadero, CA
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

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Average wind speed in January
Atascadero, CA

Average wind speed in January - Atascadero, CA
  • Average wind speed in January: 5.6mph

The windiest months (with the highest average wind speed) are March and April (5.9mph).
The calmest months (with the lowest average wind speed) are August and September (4.5mph).

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Average humidity in January
Atascadero, CA

Average humidity in January - Atascadero, CA
  • Average humidity in January: 64%

The months with the highest relative humidity are February and March (68%).
The month with the lowest relative humidity is September (50%).

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Average rainfall in January
Atascadero, CA

Average rainfall in January - Atascadero, CA
  • Average rainfall in January: 1.69"

The wettest month (with the highest rainfall) is March (1.73").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in January
Atascadero, CA

Average rainfall days in January - Atascadero, CA
  • Average rainfall days in January: 6.7 days

The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is June (0.8 days).

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

Average daylight in January / Average sunshine in January - Atascadero, CA
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in January: 6h and 3min

The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 18min).

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Average sunshine days in January
Atascadero, CA

Average sunshine days in January - Atascadero, CA
  • Average sunshine days in January: 23.6 days

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is February (19.7 days).

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Average UV index in January
Atascadero, CA

Average UV index in January - Atascadero, 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 February, November and December (UV index 3).

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Average cloud cover in January
Atascadero, CA

Average cloud cover in January - Atascadero, CA
  • Average cloud cover in January: 27

The month with the most cloud cover is March (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in January
Atascadero, CA

Average visibility in January - Atascadero, 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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Atascadero, California, USA

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