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 snowfall 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
London observes a minor difference in average high-temperatures between December's 56.3°F (13.5°C) and January's 59.2°F (15.1°C). During January nights, London records an average temperature of 42.4°F (5.8°C).Humidity
With an average relative humidity of 67%, January is the most humid month.Rainfall
In January, the rain falls for 7.3 days. Throughout January, 1.97" (50mm) of precipitation is accumulated. Throughout the year, there are 62.1 rainfall days, and 13.31" (338mm) of precipitation is accumulated.Snowfall
In London, snow does not fall in January, March through December.Daylight
In January, the average length of the day in London is 10h and 1min.On the first day of January, sunrise is at 7:09 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 5:22 pm PST.
Sunshine
In London, the average sunshine in January is 6.6h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In January, an average UV index of 3 transforms into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
When it does not snow?
Does it snow in January?
How many hours of daylight does London have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does London have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
London, CA
- Average high temperature in January: 59.2°F
The warmest month (with the highest average high temperature) is July (100.4°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in January: 42.4°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is December (41.7°F).
Average pressure in January
London, CA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
London, CA
- Average wind speed in January: 4.1mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.1mph).
Average humidity in January
London, CA
- Average humidity in January: 67%
The month with the highest relative humidity is January (67%).
The months with the lowest relative humidity are July and August (30%).
Average rainfall in January
London, CA
- Average rainfall in January: 1.97"
The wettest month (with the highest rainfall) is March (2.6").
The driest months (with the least rainfall) are June and August (0.08").
Average rainfall days in January
London, CA
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is March (11 days).
The month with the least rainy days is August (0.9 days).
Average snowfall days in January
London, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
London, 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 4min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in January
London, CA
- Average sunshine days in January: 22.8 days
The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (19.5 days).
Average UV index in January
London, CA
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in January
London, CA
- Average cloud cover in January: 27
The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in January
London, 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).
London, California, USA
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