Sacramento
California, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Sacramento, CA

The State Capitol Building in Sacramento, California, under the perfect blue sky
The State Capitol Building in Sacramento, California, under the perfect blue sky
January, the same as December, is a cool winter month in Sacramento, California, with average temperature fluctuating between 53.8°F (12.1°C) and 38.8°F (3.8°C).

Temperature

With an average high-temperature of 53.8°F (12.1°C) and an average low-temperature of 38.8°F (3.8°C), January is the coldest month.

Humidity

January is the most humid month in Sacramento, with an average relative humidity of 83.3%.

Rainfall

The month with the most rainfall is January when the rain falls for 10.3 days and typically aggregates up to 3.6" (92.5mm) of precipitation.

Daylight

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

Sunshine

In January, the average sunshine in Sacramento, California, is 4.7h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Sacramento. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. 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.

What is the coldest month in Sacramento?

The coldest month in Sacramento, California, is January, with an average high-temperature of 53.8°F (12.1°C) and an average low-temperature of 38.8°F (3.8°C).

What is the temperature in January in Sacramento?

The average high-temperature, in January, in Sacramento, California, is 53.8°F (12.1°C), while the average low-temperature is 38.8°F (3.8°C).

What is the most humid month in Sacramento?

With an average relative humidity of 83.3%, January is the most humid month in Sacramento, California.

What is the average humidity in January in Sacramento?

In January, the average relative humidity in Sacramento is 83.3%.

How much does it rain in Sacramento in January?

In January, in Sacramento, California, the rain falls for 10.3 days. Throughout January, 3.6" (92.5mm) of precipitation is accumulated.

What is the rainiest month in Sacramento?

The month with the most rainfall in Sacramento is January when the rain falls for 10.3 days and typically aggregates up to 3.6" (92.5mm) of precipitation.

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

The average length of the day in January is 9.8h.

How long on average sun shines in January in Sacramento?

In January, the average sunshine in Sacramento, California, is 4.7h.

When is the lowest UV index in Sacramento?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Sacramento.

How high is the UV index in January in Sacramento?

The average daily maximum UV index in January in Sacramento is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays.
Average temperature in January - Sacramento, CA
  • Average high temperature in January: 53.8°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (53.8°F).

  • Average low temperature in January: 38.8°F

The month with the highest average low temperature is July (58.4°F).
The coldest month (with the lowest average low temperature) is December (38.4°F).

Average humidity in January - Sacramento, CA
  • Average humidity in January: 83.3%

The month with the highest relative humidity is January (83.3%).
The month with the lowest relative humidity is July (53.2%).

Average rainfall in January - Sacramento, CA
  • Average rainfall in January: 3.6"

The wettest month (with the highest rainfall) is January (3.6").
The driest month (with the lowest rainfall) is July (0").

Average rainfall days in January - Sacramento, CA
  • Average rainfall days in January: 10.3 days

The month with the highest number of rainy days is January (10.3 days).
The month with the lowest number of rainy days is July (0 days).

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

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

  • Average sunshine in January: 4.7h

The month with most sunshine is July (Average sunshine: 14.2h).
The month with least sunshine is December (Average sunshine: 4.6h).

Average UV index in January - Sacramento, CA
  • Average UV index in January: 2

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 2).