January weather forecast
Watsonville, CA

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Weather in January

January, the same as December, in Watsonville, California, is another mild winter month, with an average temperature varying between 59°F (15°C) and 44.2°F (6.8°C).

Temperature

The transition from December to January sees average high-temperatures adjusting to a still moderate 59°F (15°C), from a not significantly different 57.9°F (14.4°C). During January, Watsonville observes a consistent average nighttime temperature of 44.2°F (6.8°C).

Humidity

In January, the average relative humidity is 72%.

Rainfall

In Watsonville, during January, the rain falls for 8.9 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, in Watsonville, there are 68.3 rainfall days, and 11.38" (289mm) of precipitation is accumulated.

Daylight

In Watsonville, the average length of the day in January is 9h and 58min.
On the first day of January, sunrise is at 7:19 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:30 pm PST.

Sunshine

The average sunshine in January is 6.4h.

UV index

The average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 4 during January translates into the following guidance:
Exercise prevention - Protecting skin and eyes from harm is required. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Frequently asked questions

What are the temperatures in Watsonville in January?

During January, Watsonville experiences an average high-temperature of 59°F (15°C) and a low-temperature of 44.2°F (6.8°C).

What is the average humidity in January in Watsonville?

The average relative humidity in January is 72%.

How many days does it rain in January in Watsonville?

In Watsonville, California, during January, the rain falls for 8.9 days and regularly aggregates up to 2.05" (52mm) of precipitation.

How many hours of daylight does Watsonville have in January?

In January, the average day length in Watsonville is 9h and 58min.

When are sunrise and sunset in January in Watsonville?

In January, on the first day of the month, sunrise is at 7:19 am and sunset at 5:01 pm. On the last day of the month, in Watsonville, California, sunrise is at 7:10 am and sunset at 5:30 pm PST.

How many hours of sunshine does Watsonville have in January?

In January, the average sunshine duration is 6.4h.

How high is the UV index in January in Watsonville?

The average daily maximum UV index in January in Watsonville, California, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Watsonville, CA

Average temperature in January - Watsonville, CA
  • Average high temperature in January: 59°F

The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (57.9°F).

  • Average low temperature in January: 44.2°F

The month with the highest average low temperature is September (54.9°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).

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Average pressure in January
Watsonville, CA

Average pressure in January - Watsonville, CA
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).

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Average wind speed in January
Watsonville, CA

Average wind speed in January - Watsonville, CA
  • Average wind speed in January: 4.7mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are January, August, September, October and November (4.7mph).

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Average humidity in January
Watsonville, CA

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

The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (65%).

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Average rainfall in January
Watsonville, CA

Average rainfall in January - Watsonville, CA
  • Average rainfall in January: 2.05"

The wettest month (with the highest rainfall) is December (2.13").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in January
Watsonville, CA

Average rainfall days in January - Watsonville, CA
  • Average rainfall days in January: 8.9 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).

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

Average daylight in January / Average sunshine in January - Watsonville, CA
  • Average daylight in January: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in January: 6h and 2min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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Average sunshine days in January
Watsonville, CA

Average sunshine days in January - Watsonville, CA
  • Average sunshine days in January: 21 days

The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.6 days).

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Average UV index in January
Watsonville, CA

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

The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).

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Average cloud cover in January
Watsonville, CA

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

The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in January
Watsonville, CA

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

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