January weather forecast and climate
Winters, CA

Weather in January

January in Winters, California, is a moderate winter month, with average temperature ranging between min 40.8°F (4.9°C) and max 55.6°F (13.1°C).

Temperature

In January, the average high-temperature is essentially the same as in December - a mild 55.6°F (13.1°C). In January, the average low-temperature is 40.8°F (4.9°C).

Humidity

In Winters, the average relative humidity is 73%.

Rainfall

In Winters, during 9.4 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, in Winters, there are 71.7 rainfall days, and 13.43" (341mm) of precipitation is accumulated.

Snowfall

January is the only month when snow falls. January is the month with the most snowfall in Winters, with 0.1" (2.5mm) of accumulated snow.

Daylight

In Winters, the average length of the day is 9.8h.

Sunshine

In Winters, the average sunshine is 5.6h.

UV index

Months with the lowest UV index in Winters are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. 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 average humidity in January in Winters?

The average relative humidity in January in Winters, California, is 73%.

How many days does it rain in January in Winters?

In Winters, in January, it is raining for 9.4 days, with typically 2.52" (64mm) of accumulated precipitation.

When does it snow the most in Winters?

January is the month with the most snowfall in Winters, California, with 0.1" (2.5mm) of accumulated snow.

When does it start snowing in Winters?

January is the first month it typically snows in Winters, California. Throughout January, Winters receives 0.1" (2.5mm) of snow.

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

In Winters, the average length of the day in January is 9.8h.

How many hours of sunshine does Winters have in January?

In Winters, the average sunshine in January is 5.6h.

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

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

What is the UV index intensity in January in Winters?

In Winters, California, the average daily maximum UV index in January is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in January
Winters, CA

Average temperature in January - Winters, CA
  • Average high temperature in January: 55.6°F

The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is December (54.3°F).

  • Average low temperature in January: 40.8°F

The month with the highest average low temperature is August (58.3°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).

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Average pressure in January
Winters, CA

Average pressure in January - Winters, CA
  • Average pressure in January: 30.14"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.91").

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Average wind speed in January
Winters, CA

Average wind speed in January - Winters, CA
  • Average wind speed in January: 5mph

The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest months (with the lowest average wind speed) are January and November (5mph).

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Average humidity in January
Winters, CA

Average humidity in January - Winters, CA
  • Average humidity in January: 73%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (46%).

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Average rainfall in January
Winters, CA

Average rainfall in January - Winters, CA
  • Average rainfall in January: 2.52"

The wettest month (with the highest rainfall) is February (2.68").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in January
Winters, CA

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

The month with the highest number of rainy days is March (12.7 days).
The month with the least rainy days is July (0.8 days).

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Average snowfall in January
Winters, CA

Average snowfall in January - Winters, CA
  • Average snowfall in January: 0.1"

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

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Average snowfall days in January
Winters, CA

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

The month with the highest number of snowfall days is February (0.1 days).
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 daylight in January /
Average sunshine in January
Winters, CA

Average daylight in January / Average sunshine in January - Winters, CA
  • Average daylight in January: 9.8h

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: 5.6h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.5h).

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Average sunshine days in January
Winters, CA

Average sunshine days in January - Winters, CA
  • Average sunshine days in January: 20.9 days

The month with the most sunshine days is July (30.1 days).
The month with the least sunshine days is March (16.9 days).

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Average UV index in January
Winters, CA

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in January
Winters, CA

Average cloud cover in January - Winters, CA
  • Average cloud cover in January: 38

Months with the most cloud cover are March and December (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in January
Winters, CA

Average visibility in January - Winters, 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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