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
As Castaic transitions from December to January, the average high-temperatures adjust to a still refreshing 61.2°F (16.2°C), nearly the same as the previous 59.5°F (15.3°C). January's average low-temperature reading settles at a chilly 43.9°F (6.6°C).Humidity
The average relative humidity in January in Castaic is 51%.Rainfall
In January, in Castaic, the rain falls for 5.3 days. Throughout January, 1.22" (31mm) of precipitation is accumulated. In Castaic, during the entire year, the rain falls for 42.2 days and collects up to 6.77" (172mm) of precipitation.Daylight
The average length of the day in January is 10h and 10min.On the first day of the month, sunrise is at 7:01 am and sunset at 4:54 pm. On the last day of January, sunrise is at 6:53 am and sunset at 5:22 pm PST.
Sunshine
In Castaic, the average sunshine in January is 6.8h.UV index
In Castaic, the average daily maximum UV index in January is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 4 in January transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What are the temperatures in Castaic in January?
What is the average humidity in January in Castaic?
How many days does it rain in January in Castaic?
How many hours of daylight does Castaic have in January?
What time are sunrise and sunset in January in Castaic?
How long on average sun shines in January in Castaic?
What is the UV index intensity in January in Castaic?
Average temperature in January
Castaic, CA
- Average high temperature in January: 61.2°F
The warmest month (with the highest average high temperature) is August (88.2°F).
The month with the lowest average high temperature is December (59.5°F).
- Average low temperature in January: 43.9°F
The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is December (42.3°F).
Average pressure in January
Castaic, CA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Castaic, CA
- Average wind speed in January: 7.3mph
The windiest months (with the highest average wind speed) are January and December (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in January
Castaic, CA
- Average humidity in January: 51%
The month with the highest relative humidity is March (56%).
The months with the lowest relative humidity are August and October (43%).
Average rainfall in January
Castaic, CA
- Average rainfall in January: 1.22"
The wettest month (with the highest rainfall) is December (1.42").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in January
Castaic, CA
- Average rainfall days in January: 5.3 days
The month with the highest number of rainy days is March (6.9 days).
The month with the least rainy days is June (0.7 days).
Average daylight in January /
Average sunshine in January
Castaic, 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: 9h and 54min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in January
Castaic, CA
- Average sunshine days in January: 25.2 days
The month with the most sunshine days is August (28.7 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in January
Castaic, CA
- Average UV index in January: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in January
Castaic, CA
- Average cloud cover in January: 21
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in January
Castaic, 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).
Castaic, California, USA
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