Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Transitioning into January, Rancho Bernardo experiences an average high-temperature of a still comfortable 66.4°F (19.1°C), marking a minor shift from the preceding month. In Rancho Bernardo, in January, the average low-temperature is a chilly 48.4°F (9.1°C).Humidity
The average relative humidity in January in Rancho Bernardo is 56%.Rainfall
In Rancho Bernardo, in January, it is raining for 5.4 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, in Rancho Bernardo, there are 54.7 rainfall days, and 8.15" (207mm) of precipitation is accumulated.Daylight
The average length of the day in January is 10h and 16min.On the first day of the month, sunrise is at 6:51 am and sunset at 4:52 pm. On the last day of January, sunrise is at 6:44 am and sunset at 5:19 pm PST.
Sunshine
January and December, with an average of 6.7h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 4 in January transforms into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Rancho Bernardo in January?
What is the average humidity in January in Rancho Bernardo?
How many days does it rain in January?
How many hours of daylight does Rancho Bernardo have in January?
When is the sunrise / sunset in January?
What are the months with the least sunshine?
How many hours of sunshine does Rancho Bernardo have in January?
What are the months with the lowest UV index?
How high is the UV index in January?
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).
Average pressure in January
Rancho Bernardo, CA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.87"Hg).
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).
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%).
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").
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).
Average daylight in January /
Average sunshine in January
Rancho Bernardo, CA
- Average daylight in January: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 6h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 6h and 42min).
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).
Average UV index in January
Rancho Bernardo, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
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).
Average visibility in January
Rancho Bernardo, 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).
Rancho Bernardo, California, USA
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