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
January reports an average high-temperature of a still enjoyable 64.9°F (18.3°C), slightly varied from December's 63.3°F (17.4°C). During January, Lake San Marcos experiences a consistent low-temperature average of 48.7°F (9.3°C).Humidity
The average relative humidity in January is 58%.Rainfall
In Lake San Marcos, in January, it is raining for 5 days, with typically 0.59" (15mm) of accumulated precipitation. Throughout the year, there are 52.1 rainfall days, and 6.1" (155mm) of precipitation is accumulated.Daylight
In Lake San Marcos, the average length of the day in January is 10h and 16min.On the first day of January, sunrise is at 6:52 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 average sunshine in January in Lake San Marcos is 6.9h.UV index
The months with the lowest UV index in Lake San Marcos, California, 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 vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in January interprets into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature in Lake San Marcos?
What is the average humidity in January in Lake San Marcos?
How much does it rain in Lake San Marcos in January?
How many hours of daylight does Lake San Marcos have in January?
When is the sunrise / sunset in January in Lake San Marcos?
How many hours of sunshine does Lake San Marcos have in January?
When is the lowest UV index in Lake San Marcos?
How high is the UV index in January in Lake San Marcos?
Average temperature in January
Lake San Marcos, CA
- Average high temperature in January: 64.9°F
The warmest month (with the highest average high temperature) is August (81.9°F).
The months with the lowest average high temperature are February and December (63.3°F).
- Average low temperature in January: 48.7°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (48°F).
Average pressure in January
Lake San Marcos, 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
Lake San Marcos, CA
- Average wind speed in January: 5mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is October (4.4mph).
Average humidity in January
Lake San Marcos, CA
- Average humidity in January: 58%
The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is November (56%).
Average rainfall in January
Lake San Marcos, CA
- Average rainfall in January: 0.59"
The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in January
Lake San Marcos, CA
- Average rainfall days in January: 5 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.2 days).
Average daylight in January /
Average sunshine in January
Lake San Marcos, 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 month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in January
Lake San Marcos, CA
- Average sunshine days in January: 25 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is February (20 days).
Average UV index in January
Lake San Marcos, 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
Lake San Marcos, CA
- Average cloud cover in January: 20
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
Lake San Marcos, 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).
Lake San Marcos, California, USA
Weather forecast for your location
2. Allow the app to use your location