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 mild 59°F (15°C), slightly varied from December's 57.9°F (14.4°C). The nights of January anticipate an average low-temperature of 44.2°F (6.8°C).Humidity
In Las Lomas, California, the average relative humidity in January is 72%.Rainfall
In Las Lomas, in January, during 8.9 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In Las Lomas, during the entire year, the rain falls for 68.3 days and collects up to 11.38" (289mm) of precipitation.Daylight
The average length of the day in January is 9h and 59min.On the first day of the month, sunrise is at 7:19 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:30 pm PST.
Sunshine
The average sunshine in January is 6.4h.UV index
The average daily maximum UV index in January is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 4 in January transforms into this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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 many days does it rain in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
How high is the UV index in January?
Average temperature in January
Las Lomas, CA
- Average high temperature in January: 59°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (57.9°F).
- Average low temperature in January: 44.2°F
The month with the highest average low temperature is September (54.9°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).
Average pressure in January
Las Lomas, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in January
Las Lomas, CA
- Average wind speed in January: 4.7mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are January, August, September, October and November (4.7mph).
Average humidity in January
Las Lomas, CA
- Average humidity in January: 72%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (65%).
Average rainfall in January
Las Lomas, CA
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is December (2.13").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Las Lomas, CA
- Average rainfall days in January: 8.9 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight in January /
Average sunshine in January
Las Lomas, CA
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 6h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in January
Las Lomas, CA
- Average sunshine days in January: 21 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.6 days).
Average UV index in January
Las Lomas, CA
- Average UV index in January: 4
The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in January
Las Lomas, CA
- Average cloud cover in January: 30
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in January
Las Lomas, 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).
Las Lomas, California, USA
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