January weather forecast and climate
Sacramento, CA

The State Capitol Building in Sacramento, California
The State Capitol Building in Sacramento, California

Weather in January

January is a mild winter month in Sacramento, California, with average temperature varying between 55.9°F (13.3°C) and 41.5°F (5.3°C).

Temperature

In Sacramento, the average high-temperature in January is essentially the same as in December - a moderate 55.9°F (13.3°C). In Sacramento, in January, the average low-temperature is 41.5°F (5.3°C).

Humidity

In Sacramento, the average relative humidity is 74%.

Rainfall

In January, in Sacramento, California, the rain falls for 8.4 days. Throughout January, 1.1" (28mm) of precipitation is accumulated. Throughout the year, in Sacramento, there are 66.6 rainfall days, and 7.6" (193mm) of precipitation is accumulated.

Daylight

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

Sunshine

In Sacramento, the average sunshine is 5.7h.

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 3 in January transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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.
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FAQ

What is the temperature in January in Sacramento?

The average high-temperature, in January, in Sacramento, California, is 55.9°F (13.3°C), while the average low-temperature is 41.5°F (5.3°C).

What is the average humidity in January in Sacramento?

In January, the average relative humidity in Sacramento is 74%.

How many days does it rain in January in Sacramento?

In Sacramento, in January, it is raining for 8.4 days, with typically 1.1" (28mm) of accumulated precipitation.

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

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

How long on average sun shines in January in Sacramento?

In Sacramento, California, the average sunshine in January is 5.7h.

What is the month with the lowest UV index in Sacramento?

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

How high is the UV index in January in Sacramento?

The average daily maximum UV index in January in Sacramento, California, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in January
Sacramento, CA

Average temperature in January - Sacramento, CA
  • Average high temperature in January: 55.9°F

The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (54.5°F).

  • Average low temperature in January: 41.5°F

The month with the highest average low temperature is August (59.5°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure in January
Sacramento, CA

Average pressure in January - Sacramento, CA
  • Average pressure in January: 30.15"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in January
Sacramento, CA

Average wind speed in January - Sacramento, CA
  • Average wind speed in January: 5.4mph

The windiest month (with the highest average wind speed) is February (6.3mph).
The calmest months (with the lowest average wind speed) are September and November (5mph).

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Average humidity in January
Sacramento, CA

Average humidity in January - Sacramento, CA
  • Average humidity in January: 74%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (45%).

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Average rainfall in January
Sacramento, CA

Average rainfall in January - Sacramento, CA
  • Average rainfall in January: 1.1"

The wettest month (with the highest rainfall) is March (1.34").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in January
Sacramento, CA

Average rainfall days in January - Sacramento, CA
  • Average rainfall days in January: 8.4 days

The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (1.2 days).

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

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 the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in January: 5.7h

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
Sacramento, CA

Average sunshine days in January - Sacramento, CA
  • Average sunshine days in January: 21.2 days

The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (17.7 days).

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Average UV index in January
Sacramento, CA

Average UV index in January - Sacramento, 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
Sacramento, CA

Average cloud cover in January - Sacramento, CA
  • Average cloud cover in January: 36

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in January
Sacramento, CA

Average visibility in January - Sacramento, 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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