January weather forecast and climate
San Bernardino, CA

Scenic settlement spot on the foot of the iconic San Bernardino Mountains in California, with a view of the snow peaks of the San Gorgiono mountains
Scenic settlement spot on the foot of the iconic San Bernardino Mountains in California, with a view of the snow peaks of the San Gorgiono mountains

Weather in January

January is an enjoyable winter month in San Bernardino, California, with average temperature ranging between max 62.2°F (16.8°C) and min 44.6°F (7°C).

Temperature

In January, the average high-temperature is almost the same as in December - an enjoyable 62.2°F (16.8°C). In San Bernardino, the average low-temperature is 44.6°F (7°C).

Humidity

The average relative humidity in January is 48%.

Rainfall

In San Bernardino, it is raining for 5.8 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in San Bernardino, there are 46.6 rainfall days, and 6.18" (157mm) of precipitation is accumulated.

Snowfall

In San Bernardino snow does not fall, March through December.

Daylight

In January, the average length of the day in San Bernardino is 10.2h.

Sunshine

The average sunshine in San Bernardino is 7h.

UV index

The average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. 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 San Bernardino?

In San Bernardino, in January, the average high-temperature is 62.2°F (16.8°C), and the average low-temperature is 44.6°F (7°C).

What is the average humidity in January in San Bernardino?

In San Bernardino, California, the average relative humidity in January is 48%.

How much does it rain in San Bernardino in January?

In San Bernardino, California, during January, the rain falls for 5.8 days and regularly aggregates up to 0.91" (23mm) of precipitation.

Does it snow in San Bernardino in January?

In San Bernardino, California, in January, it doesn't snow. In February, it regularly snows.

When it does not snow in San Bernardino?

January, March through December are months without snowfall in San Bernardino.

What is the average length of the day in January in San Bernardino?

The average length of the day in January in San Bernardino is 10.2h.

How long on average sun shines in January in San Bernardino?

In San Bernardino, the average sunshine in January is 7h.

What is the UV index reading in January in San Bernardino?

In January, the average daily maximum UV index in San Bernardino is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in January
San Bernardino, CA

Average temperature in January - San Bernardino, CA
  • Average high temperature in January: 62.2°F

The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).

  • Average low temperature in January: 44.6°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).

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Average pressure in January
San Bernardino, CA

Average pressure in January - San Bernardino, CA
  • Average pressure in January: 30.1"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in January
San Bernardino, CA

Average wind speed in January - San Bernardino, CA
  • Average wind speed in January: 5.3mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in January
San Bernardino, CA

Average humidity in January - San Bernardino, CA
  • Average humidity in January: 48%

The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in January
San Bernardino, CA

Average rainfall in January - San Bernardino, CA
  • Average rainfall in January: 0.91"

The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in January
San Bernardino, CA

Average rainfall days in January - San Bernardino, CA
  • Average rainfall days in January: 5.8 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days in January
San Bernardino, CA

Average snowfall days in January - San Bernardino, 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
San Bernardino, CA

Average daylight in January / Average sunshine in January - San Bernardino, CA
  • Average daylight in January: 10.2h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in January: 7h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days in January
San Bernardino, CA

Average sunshine days in January - San Bernardino, CA
  • Average sunshine days in January: 24.2 days

Months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).

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Average UV index in January
San Bernardino, CA

Average UV index in January - San Bernardino, CA
  • Average UV index in January: 4

Months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in January
San Bernardino, CA

Average cloud cover in January - San Bernardino, CA
  • Average cloud cover in January: 19

Months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in January
San Bernardino, CA

Average visibility in January - San Bernardino, 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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