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
Castroville records an average high-temperature of a still moderate 59.2°F (15.1°C) in January, maintaining a close correlation with December's 57.6°F (14.2°C). Throughout the month of January, Castroville sees a steady low-temperature average of 44.6°F (7°C).Humidity
The average relative humidity in January is 72%.Rainfall
In Castroville, in January, during 6.3 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Castroville, during the entire year, the rain falls for 53.1 days and collects up to 5.35" (136mm) of precipitation.Daylight
The average length of the day in January is 9h and 59min.On the first day of January, sunrise is at 7:19 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:31 pm PST.
Sunshine
In Castroville, the average sunshine in January is 6.4h.UV index
In January, the average daily maximum UV index in Castroville is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 during January translates into the following guidance:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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 in Castroville?
How much does it rain in January?
How many hours of daylight does Castroville have in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Castroville, CA
- Average high temperature in January: 59.2°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (57.6°F).
- Average low temperature in January: 44.6°F
The month with the highest average low temperature is September (54.5°F).
The coldest month (with the lowest average low temperature) is December (43.7°F).
Average pressure in January
Castroville, 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
Castroville, CA
- Average wind speed in January: 5mph
The windiest month (with the highest average wind speed) is May (6.5mph).
The calmest month (with the lowest average wind speed) is September (4.9mph).
Average humidity in January
Castroville, CA
- Average humidity in January: 72%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (66%).
Average rainfall in January
Castroville, CA
- Average rainfall in January: 0.79"
The wettest month (with the highest rainfall) is December (1.14").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in January
Castroville, CA
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.7 days).
Average daylight in January /
Average sunshine in January
Castroville, 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
Castroville, CA
- Average sunshine days in January: 23.3 days
The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (20 days).
Average UV index in January
Castroville, CA
- Average UV index in January: 4
The months with the highest UV index are 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
Castroville, CA
- Average cloud cover in January: 29
The month with the most cloud cover is March (Cloud cover 33).
The months with the least cloud cover are July and September (Cloud cover 10).
Average visibility in January
Castroville, 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).
Castroville, California, USA
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