January weather forecast
Mendocino, CA

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Weather in January

January, like December, in Mendocino, California, is a cool winter month, with an average temperature fluctuating between 46.9°F (8.3°C) and 54.9°F (12.7°C).

Temperature

On the advent of January, Mendocino's average high-temperature exhibits a minor adjustment to a still fresh 54.9°F (12.7°C) from December's 54.3°F (12.4°C). In Mendocino, January's low temperatures hover around a chilly 46.9°F (8.3°C), reflecting a minor decrease from the daytime highs.

Humidity

The average relative humidity in January in Mendocino is 77%.

Rainfall

In Mendocino, California, in January, during 9.8 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Mendocino, during the entire year, the rain falls for 68.4 days and collects up to 9.53" (242mm) of precipitation.

Snowfall

January, March through December are months without snowfall in Mendocino.

Ocean temperature

In Mendocino, the average seawater temperature in January is 52.7°F (11.5°C).
Note: Staying in 52.7°F (11.5°C) waters for just a few moments at 55.4°F (13°C) can be harrowing, and below 50°F (10°C) poses breathing and cold shock risks, depending on individual tolerance.

Daylight

In Mendocino, the average length of the day in January is 9h and 47min.
On the first day of January, sunrise is at 7:34 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:34 pm PST.

Sunshine

In January, the average sunshine in Mendocino, California, is 5.6h.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Mendocino. 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 UV index of 3 during January leads to these instructions:
Act with care - The need to guard against sun damage is communicated. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the temperature in January in Mendocino?

The average high-temperature and low-temperature in Mendocino, California, during January are 54.9°F (12.7°C) and 46.9°F (8.3°C) respectively.

What is the average humidity in January in Mendocino?

The average relative humidity in January is 77%.

How much does it rain in Mendocino in January?

In Mendocino, California, in January, it is raining for 9.8 days, with typically 1.65" (42mm) of accumulated precipitation.

When it does not snow in Mendocino?

January, March through December are months without snowfall in Mendocino, California.

Does it snow in Mendocino in January?

In Mendocino, in January, it doesn't snow. In February, it regularly snows.

What is the ocean temperature in January in Mendocino?

In Mendocino, California, in January, the average water temperature is 52.7°F (11.5°C). Swimming in 52.7°F (11.5°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

In Mendocino, the average day length in January is 9h and 47min.

When is the sunrise / sunset in January in Mendocino?

On the first day of January in Mendocino, California, sunrise is at 7:34 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:34 pm PST.

How many hours of sunshine does Mendocino have in January?

In January, the average sunshine duration in Mendocino, California, is 5.6h.

What are the months with the lowest UV index in Mendocino?

The months with the lowest UV index in Mendocino are January, February, November and December, with an average maximum UV index of 3.

What is the UV index reading in January in Mendocino?

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

Average temperature in January
Mendocino, CA

Average temperature in January - Mendocino, CA
  • Average high temperature in January: 54.9°F

The warmest month (with the highest average high temperature) is September (67.5°F).
The months with the lowest average high temperature are February and December (54.3°F).

  • Average low temperature in January: 46.9°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).

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Average pressure in January
Mendocino, CA

Average pressure in January - Mendocino, 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 August (29.93"Hg).

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Average wind speed in January
Mendocino, CA

Average wind speed in January - Mendocino, CA
  • Average wind speed in January: 8mph

The windiest month (with the highest average wind speed) is June (10.9mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

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Average humidity in January
Mendocino, CA

Average humidity in January - Mendocino, CA
  • Average humidity in January: 77%

The months with the highest relative humidity are March, May and August (80%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in January
Mendocino, CA

Average rainfall in January - Mendocino, CA
  • Average rainfall in January: 1.65"

The wettest month (with the highest rainfall) is December (1.77").
The driest months (with the least rainfall) are June, July and August (0.08").

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Average rainfall days in January
Mendocino, CA

Average rainfall days in January - Mendocino, CA
  • Average rainfall days in January: 9.8 days

The month with the highest number of rainy days is March (11.4 days).
The months with the least rainy days are June and August (1.8 days).

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Average snowfall in January
Mendocino, CA

Average snowfall in January - Mendocino, CA
  • Average snowfall in January: 0"

The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in January
Mendocino, CA

Average snowfall days in January - Mendocino, CA
  • Average snowfall days in January: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature in January
Mendocino, CA

Average sea temperature in January - Mendocino, CA
  • Average sea temperature in January: 52.6°F

The best month for swimming (with the highest average sea temperature) is October (55.6°F).
The coldest month (with the lowest average sea temperature) is April (52.1°F).

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

Average daylight in January / Average sunshine in January - Mendocino, CA
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 5h and 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in January
Mendocino, CA

Average sunshine days in January - Mendocino, CA
  • Average sunshine days in January: 20 days

The month with the most sunshine days is July (28.2 days).
The month with the least sunshine days is March (18.4 days).

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Average UV index in January
Mendocino, CA

Average UV index in January - Mendocino, CA
  • Average UV index in January: 3

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

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Average cloud cover in January
Mendocino, CA

Average cloud cover in January - Mendocino, CA
  • Average cloud cover in January: 39

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 10).

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Average visibility in January
Mendocino, CA

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

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