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 arrival of January brings an average high-temperature of a still moderate 57.4°F (14.1°C), nearly identical to December's 55.4°F (13°C). Westley's nighttime temperature in January drops to an average of 41°F (5°C).Humidity
The most humid month is January, with an average relative humidity of 72%.Rainfall
In Westley, during January, the rain falls for 6.9 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, there are 49.1 rainfall days, and 2.8" (71mm) of precipitation is accumulated.Daylight
In Westley, the average length of the day in January is 9h and 55min.On the first day of the month, sunrise is at 7:19 am and sunset at 4:57 pm. On the last day of January, in Westley, sunrise is at 7:09 am and sunset at 5:27 pm PST.
Sunshine
The average sunshine in January is 6.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 3 in January interprets into the following advice:
Make use of precautions - It is urged to ward off sun damage. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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?
How many hours of daylight does Westley have in January?
When are sunrise and sunset in January?
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
Westley, CA
- Average high temperature in January: 57.4°F
The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in January: 41°F
The months with the highest average low temperature are July and August (60.8°F).
The coldest months (with the lowest average low temperature) are January and December (41°F).
Average pressure in January
Westley, 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 (29.91"Hg).
Average wind speed in January
Westley, CA
- Average wind speed in January: 5.1mph
The windiest month (with the highest average wind speed) is June (6.7mph).
The calmest months (with the lowest average wind speed) are January and November (5.1mph).
Average humidity in January
Westley, CA
- Average humidity in January: 72%
The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (39%).
Average rainfall in January
Westley, CA
- Average rainfall in January: 0.39"
The wettest months (with the highest rainfall) are March and December (0.47").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in January
Westley, CA
- Average rainfall days in January: 6.9 days
The month with the highest number of rainy days is March (8.5 days).
The month with the least rainy days is June (1 days).
Average daylight in January /
Average sunshine in January
Westley, 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 1min
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 0min).
Average sunshine days in January
Westley, CA
- Average sunshine days in January: 23 days
The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is March (20.9 days).
Average UV index in January
Westley, CA
- Average UV index in January: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Westley, CA
- Average cloud cover in January: 32
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in January
Westley, 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).
Westley, California, USA
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