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 onset of January notes an average high-temperature of a still refreshing 63.1°F (17.3°C), subtly shifted from December's 61.9°F (16.6°C). Rolling Hills's average nighttime temperature in January modestly descends to a fresh 54.3°F (12.4°C).Humidity
The average relative humidity in January in Rolling Hills is 62%.Rainfall
The month with the most rainfall in Rolling Hills is January, when the rain falls for 5.2 days and typically aggregates up to 1.73" (44mm) of precipitation.Daylight
In Rolling Hills, the average length of the day in January is 10h and 13min.On the first day of January, sunrise is at 6:58 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 5:22 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 6.7h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Rolling Hills. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 4 in January transforms into the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
What is the rainiest month?
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?
What is the month with the least sunshine?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Rolling Hills, CA
- Average high temperature in January: 63.1°F
The warmest months (with the highest average high temperature) are August and September (73.2°F).
The month with the lowest average high temperature is February (61.5°F).
- Average low temperature in January: 54.3°F
The month with the highest average low temperature is September (64.2°F).
The coldest month (with the lowest average low temperature) is February (53.2°F).
Average pressure in January
Rolling Hills, CA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in January
Rolling Hills, CA
- Average wind speed in January: 6.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in January
Rolling Hills, CA
- Average humidity in January: 62%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is November (61%).
Average rainfall in January
Rolling Hills, CA
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is January (1.73").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in January
Rolling Hills, CA
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is August (3.1 days).
Average daylight in January /
Average sunshine in January
Rolling Hills, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 6h and 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 6h and 42min).
Average sunshine days in January
Rolling Hills, CA
- Average sunshine days in January: 23.9 days
The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is June (20 days).
Average UV index in January
Rolling Hills, CA
- Average UV index in January: 4
The month with the highest UV index is August (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
Rolling Hills, CA
- Average cloud cover in January: 22
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 11).
Average visibility in January
Rolling Hills, 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).
Rolling Hills, California, USA
Weather forecast for your location
2. Allow the app to use your location