January weather forecast and climate
Rancho Bernardo, CA

Weather in January

January, like December, in Rancho Bernardo, California, is another comfortable winter month, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 48.4°F (9.1°C).

Temperature

In Rancho Bernardo, California, the average high-temperature in January is essentially the same as in December - a still enjoyable 66.4°F (19.1°C). In January, the average low-temperature is 48.4°F (9.1°C).

Humidity

The average relative humidity in January is 56%.

Rainfall

In Rancho Bernardo, during 5.4 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 54.7 rainfall days, and 8.15" (207mm) of precipitation is accumulated.

Daylight

In Rancho Bernardo, the average length of the day is 10.3h.

Sunshine

Months with the least sunshine in Rancho Bernardo are January and December, with an average of 6.7h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Rancho Bernardo. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 in January interpret into the following advice:
Take precautions - Protection against sunburn is recommended. 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 Rancho Bernardo?

In Rancho Bernardo, California, in January, the average high-temperature is 66.4°F (19.1°C), and the average low-temperature is 48.4°F (9.1°C).

What is the average humidity in January in Rancho Bernardo?

The average relative humidity in January in Rancho Bernardo is 56%.

How many days does it rain in January in Rancho Bernardo?

In Rancho Bernardo, in January, it is raining for 5.4 days, with typically 0.98" (25mm) of accumulated precipitation.

What is the average length of the day in January in Rancho Bernardo?

The average length of the day in January in Rancho Bernardo is 10.3h.

What is the month with the least sunshine in Rancho Bernardo?

Months with the least sunshine are January and December, with an average of 6.7h of sunshine.

How long on average sun shines in January in Rancho Bernardo?

The average sunshine in January in Rancho Bernardo is 6.7h.

What is the month with the lowest UV index in Rancho Bernardo?

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index.

How high is the UV index in January in Rancho Bernardo?

In January, the average daily maximum UV index in Rancho Bernardo, California, is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in January
Rancho Bernardo, CA

Average temperature in January - Rancho Bernardo, CA
  • Average high temperature in January: 66.4°F

The warmest month (with the highest average high temperature) is August (84.2°F).
The month with the lowest average high temperature is December (63.9°F).

  • Average low temperature in January: 48.4°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (47.1°F).

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Average pressure in January
Rancho Bernardo, CA

Average pressure in January - Rancho Bernardo, CA
  • Average pressure in January: 30.09"

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.87").

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Average wind speed in January
Rancho Bernardo, CA

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

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.3mph).

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Average humidity in January
Rancho Bernardo, CA

Average humidity in January - Rancho Bernardo, CA
  • Average humidity in January: 56%

The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is November (54%).

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Average rainfall in January
Rancho Bernardo, CA

Average rainfall in January - Rancho Bernardo, CA
  • Average rainfall in January: 0.98"

The wettest month (with the highest rainfall) is February (1.61").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in January
Rancho Bernardo, CA

Average rainfall days in January - Rancho Bernardo, CA
  • Average rainfall days in January: 5.4 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.6 days).

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Average daylight in January /
Average sunshine in January
Rancho Bernardo, CA

Average daylight in January / Average sunshine in January - Rancho Bernardo, CA
  • Average daylight in January: 10.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in January: 6.7h

The month with the most sunshine is July (Average sunshine: 12h).
Months with the least sunshine are January and December (Average sunshine: 6.7).

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Average sunshine days in January
Rancho Bernardo, CA

Average sunshine days in January - Rancho Bernardo, CA
  • Average sunshine days in January: 24.7 days

The month with the most sunshine days is June (27 days).
The month with the least sunshine days is February (21.2 days).

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Average UV index in January
Rancho Bernardo, CA

Average UV index in January - Rancho Bernardo, CA
  • Average UV index in January: 4

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in January
Rancho Bernardo, CA

Average cloud cover in January - Rancho Bernardo, CA
  • Average cloud cover in January: 22

The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in January
Rancho Bernardo, CA

Average visibility in January - Rancho Bernardo, 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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