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 shift to January signals an average high-temperature of a still mild 57°F (13.9°C), subtly varied from December's 56.1°F (13.4°C). During January, the nighttime temperature averages of 44.1°F (6.7°C).Humidity
In January, the average relative humidity is 72%.Rainfall
In San Lorenzo, during January, the rain falls for 7.8 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 56.9 rainfall days, and 4.06" (103mm) of precipitation is accumulated.Daylight
The average length of the day in January in San Lorenzo is 9h and 55min.On the first day of January, sunrise is at 7:23 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:30 pm PST.
Sunshine
The average sunshine in January is 6.3h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In January, an average UV index of 3 transforms into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does San Lorenzo have in January?
When is the sunrise / sunset in January?
How many hours of sunshine does San Lorenzo have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
San Lorenzo, CA
- Average high temperature in January: 57°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (56.1°F).
- Average low temperature in January: 44.1°F
The month with the highest average low temperature is September (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (44.1°F).
Average pressure in January
San Lorenzo, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in January
San Lorenzo, CA
- Average wind speed in January: 5mph
The windiest month (with the highest average wind speed) is May (6.7mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in January
San Lorenzo, CA
- Average humidity in January: 72%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (62%).
Average rainfall in January
San Lorenzo, CA
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in January
San Lorenzo, CA
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.7 days).
Average daylight in January /
Average sunshine in January
San Lorenzo, CA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 6h and 2min
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 54min).
Average sunshine days in January
San Lorenzo, CA
- Average sunshine days in January: 22 days
The month with the most sunshine days is July (27.9 days).
The month with the least sunshine days is March (18.6 days).
Average UV index in January
San Lorenzo, CA
- Average UV index in January: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
San Lorenzo, CA
- Average cloud cover in January: 31
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in January
San Lorenzo, 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).
San Lorenzo, California, USA
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