January weather forecast
Sacramento, CA

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

Weather in January

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

Temperature

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

Humidity

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

Rainfall

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

Daylight

The average length of the day in January in Sacramento is 9h and 50min.
On the first day of January, sunrise is at 7:23 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:26 pm PST.

Sunshine

The average sunshine in January in Sacramento, California, is 5.7h.

UV index

The months with the lowest UV index in Sacramento are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 3 in January interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 average humidity in January in Sacramento?

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

How much does it rain in Sacramento in January?

In Sacramento, California, 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?

The average day length in January in Sacramento is 9h and 50min.

When are sunrise and sunset in January in Sacramento?

In January, on the first day of the month, sunrise is at 7:23 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:26 pm PST.

How long on average sun shines in January in Sacramento?

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

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

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

What is the UV index reading in January in Sacramento?

The average daily maximum UV index in January in Sacramento is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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: 9h and 50min

The month with the longest days is June (Average daylight: 14h and 49min).
The month with the shortest days is December (Average daylight: 9h and 31min).

  • Average sunshine in January: 5h and 42min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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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

The months with the highest UV index are June and July (UV index 7).
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
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

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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