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
The average high-temperature in January, at a still comfortable 65.3°F (18.5°C), reveals a modest deviation from December's 63.9°F (17.7°C). Rancho Peñasquitos, during the month of January, experiences an average low-temperature of 49.8°F (9.9°C).Humidity
The average relative humidity in January is 57%.Rainfall
In Rancho Peñasquitos, in January, during 4 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, there are 41.9 rainfall days, and 3.35" (85mm) of precipitation is accumulated.Daylight
In Rancho Peñasquitos, the average length of the day in January is 10h and 16min.On the first day of January, sunrise is at 6:51 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 5:19 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 6.8h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In January, a daily maximum UV index of 4 leads to the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in January?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does Rancho Peñasquitos have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Rancho Peñasquitos have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Rancho Peñasquitos, CA
- Average high temperature in January: 65.3°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (63.9°F).
- Average low temperature in January: 49.8°F
The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure in January
Rancho Peñasquitos, CA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in January
Rancho Peñasquitos, CA
- Average wind speed in January: 5.1mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is October (4.5mph).
Average humidity in January
Rancho Peñasquitos, CA
- Average humidity in January: 57%
The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is November (56%).
Average rainfall in January
Rancho Peñasquitos, CA
- Average rainfall in January: 0.35"
The wettest month (with the highest rainfall) is December (0.63").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Rancho Peñasquitos, CA
- Average rainfall days in January: 4 days
The month with the highest number of rainy days is March (6.5 days).
The month with the least rainy days is June (1.3 days).
Average daylight in January /
Average sunshine in January
Rancho Peñasquitos, 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 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 6h and 48min).
Average sunshine days in January
Rancho Peñasquitos, CA
- Average sunshine days in January: 25.7 days
The month with the most sunshine days is October (26.1 days).
The month with the least sunshine days is February (21.8 days).
Average UV index in January
Rancho Peñasquitos, 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, March, November and December (UV index 4).
Average cloud cover in January
Rancho Peñasquitos, CA
- Average cloud cover in January: 21
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in January
Rancho Peñasquitos, 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 Peñasquitos, California, USA
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