December weather forecastCastroville, TX
December
Weather in December
The first month of the winter, December, is also an enjoyable month in Castroville, Texas, with an average temperature varying between 61.7°F (16.5°C) and 45°F (7.2°C).Temperature
With the commencement of December, Castroville records a moderate temperature decline, with the average high easing from November's pleasant 68.9°F (20.5°C) to an enjoyable 61.7°F (16.5°C). Castroville usually reports an average low-temperature of 45°F (7.2°C) during the month of December.Humidity
In Castroville, the average relative humidity in December is 68%.Rainfall
In Castroville, in December, during 9.3 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, there are 138.8 rainfall days, and 19.76" (502mm) of precipitation is accumulated.Snowfall
In Castroville, Texas, snow does not fall in March through December.Daylight
December has the shortest days of the year, with an average of 10h and 18min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 5:36 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:47 pm CST.
Sunshine
The months with the least sunshine in Castroville are November and December, with an average of 5.3h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 3 in December suggests the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Castroville, TX
- Average high temperature in December: 61.7°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (61.3°F).
- Average low temperature in December: 45°F
The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in December
Castroville, TX
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.89"Hg).
Average wind speed in December
Castroville, TX
- Average wind speed in December: 7.5mph
The windiest months (with the highest average wind speed) are April and May (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in December
Castroville, TX
- Average humidity in December: 68%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (58%).
Average rainfall in December
Castroville, TX
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in December
Castroville, TX
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Castroville, TX
- Average snowfall in December: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Castroville, TX
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Castroville, TX
- Average daylight in December: 10h and 18min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are November and December (Average sunshine: 5h and 18min).
Average sunshine days in December
Castroville, TX
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in December
Castroville, TX
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Castroville, TX
- Average cloud cover in December: 40
The months with the most cloud cover are March and May (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Castroville, TX
- Average visibility in December: 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).
