January weather forecast and climate
Plymouth, CA

Weather in January

January, like December, in Plymouth, California, is a cool winter month, with average temperature varying between 38.8°F (3.8°C) and 54.9°F (12.7°C).

Temperature

In Plymouth, California, the average high-temperature is practically the same as in December - a still fresh 54.9°F (12.7°C). In January, in Plymouth, the average low-temperature is 38.8°F (3.8°C).

Humidity

In Plymouth, the average relative humidity is 69%.

Rainfall

In Plymouth, it is raining for 9.4 days, with typically 3.23" (82mm) of accumulated precipitation. Throughout the year, there are 81.8 rainfall days, and 23.39" (594mm) of precipitation is accumulated.

Snowfall

January, April through October are months without snowfall in Plymouth.

Daylight

In January, the average length of the day is 9.9h.

Sunshine

In January, the average sunshine is 6.2h.

UV index

Months with the lowest UV index in Plymouth are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 3 in January interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in January in Plymouth?

In January, the average high-temperature is 54.9°F (12.7°C), and the average low-temperature is 38.8°F (3.8°C).

What is the average humidity in January in Plymouth?

In Plymouth, California, the average relative humidity in January is 69%.

How many days does it rain in January in Plymouth?

In Plymouth, during January, the rain falls for 9.4 days and regularly aggregates up to 3.23" (82mm) of precipitation.

Does it snow in Plymouth in January?

In January, in Plymouth, it doesn't snow. December is the latest month when it typically snows.

When it does not snow in Plymouth?

January, April through October are months without snowfall.

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

In January, the average length of the day is 9.9h.

How many hours of sunshine does Plymouth have in January?

The average sunshine in January in Plymouth is 6.2h.

When is the lowest UV index in Plymouth?

Months with the lowest UV index in Plymouth, California, are January, February, November and December, with an average maximum UV index of 3.

What is the UV index intensity in January in Plymouth?

In Plymouth, California, the average daily maximum UV index in January is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in January
Plymouth, CA

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

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is December (52.9°F).

  • Average low temperature in January: 38.8°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is December (37.9°F).

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Average pressure in January
Plymouth, CA

Average pressure in January - Plymouth, CA
  • Average pressure in January: 30.16"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in January
Plymouth, CA

Average wind speed in January - Plymouth, CA
  • Average wind speed in January: 4.8mph

The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

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Average humidity in January
Plymouth, CA

Average humidity in January - Plymouth, CA
  • Average humidity in January: 69%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (40%).

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Average rainfall in January
Plymouth, CA

Average rainfall in January - Plymouth, CA
  • Average rainfall in January: 3.23"

The wettest month (with the highest rainfall) is March (4.69").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in January
Plymouth, CA

Average rainfall days in January - Plymouth, CA
  • Average rainfall days in January: 9.4 days

The month with the highest number of rainy days is March (14.6 days).
The month with the least rainy days is August (1.5 days).

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Average snowfall in January
Plymouth, CA

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

The month with the highest snowfall is February (2.01").
Months with the least snowfall are January, April, May, June, July, August, September and October (0").

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Average snowfall days in January
Plymouth, CA

Average snowfall days in January - Plymouth, CA
  • Average snowfall days in January: 0.1 days

The month with the highest number of snowfall days is February (1.3 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Plymouth, CA
  • Average daylight in January: 9.9h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in January: 6.2h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6h).

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Average sunshine days in January
Plymouth, CA

Average sunshine days in January - Plymouth, CA
  • Average sunshine days in January: 20.3 days

The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (15.1 days).

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Average UV index in January
Plymouth, CA

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in January
Plymouth, CA

Average cloud cover in January - Plymouth, CA
  • Average cloud cover in January: 31

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in January
Plymouth, CA

Average visibility in January - Plymouth, 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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