December weather forecast
Zephyr, TX

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Weather in December

The first month of the winter, December, is also a moderate month in Zephyr, Texas, with an average temperature fluctuating between 58.1°F (14.5°C) and 40.5°F (4.7°C).

Temperature

January and December bring Zephyr's lowest average temperatures, reaching a high of 58.1°F (14.5°C).

Humidity

In December, the average relative humidity is 62%.

Rainfall

In Zephyr, in December, during 6.7 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In Zephyr, during the entire year, the rain falls for 115.7 days and collects up to 19.96" (507mm) of precipitation.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 1 snowfall days, it receives 0.47" (12mm) of snow. Throughout the year, there are 3.2 snowfall days, and 1.46" (37mm) of snow is accumulated.

Daylight

With an average of 10h and 6min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:17 am and sunset at 5:31 pm. On the last day of December, sunrise is at 7:34 am and sunset at 5:42 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 5.9h of sunshine.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: An average UV index of 3 in December transforms into this advice:
Adopt protective measures - Suggestions to resist sunburn are offered. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

The months of January and December see the lowest levels of Zephyr's temperatures, averaging a high of 58.1°F (14.5°C).

What are December temperatures?

The average high-temperature, in December, in Zephyr, is 58.1°F (14.5°C), while the average low-temperature is 40.5°F (4.7°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 93.2°F (34°C).

What is the average humidity in December?

In Zephyr, the average relative humidity in December is 62%.

How much does it rain in December?

In Zephyr, in December, during 6.7 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When does it start snowing in Zephyr?

December is the first month it typically snows. Throughout December, in the average 1 snowfall days, it receives 0.47" (12mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year in Zephyr, with an average of 10h and 6min of daylight.

How many hours of daylight does Zephyr have in December?

The average day length in December is 10h and 7min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:17 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 5:42 pm CST.

What is the month with the least sunshine?

With an average of 5.9h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December in Zephyr?

The average sunshine duration in December is 5.9h.

What is the month with the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 3.

How high is the UV index in December?

In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Zephyr, TX

Average temperature in December - Zephyr, TX
  • Average high temperature in December: 58.1°F

The warmest month (with the highest average high temperature) is August (95.7°F).
The months with the lowest average high temperature are January and December (58.1°F).

  • Average low temperature in December: 40.5°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (39°F).

Average pressure in December
Zephyr, TX

Average pressure in December - Zephyr, TX
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in December
Zephyr, TX

Average wind speed in December - Zephyr, TX
  • Average wind speed in December: 9.7mph

The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is September (8.3mph).

Average humidity in December
Zephyr, TX

Average humidity in December - Zephyr, TX
  • Average humidity in December: 62%

The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is August (51%).

Average rainfall in December
Zephyr, TX

Average rainfall in December - Zephyr, TX
  • Average rainfall in December: 1.18"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.94").

Average rainfall days in December
Zephyr, TX

Average rainfall days in December - Zephyr, TX
  • Average rainfall days in December: 6.7 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (5.4 days).

Average snowfall in December
Zephyr, TX

Average snowfall in December - Zephyr, TX
  • Average snowfall in December: 0.47"

The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Zephyr, TX

Average snowfall days in December - Zephyr, TX
  • Average snowfall days in December: 1 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Zephyr, TX

Average daylight in December / Average sunshine in December - Zephyr, TX
  • Average daylight in December: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in December
Zephyr, TX

Average sunshine days in December - Zephyr, TX
  • Average sunshine days in December: 22.2 days

The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is May (13.4 days).

Average UV index in December
Zephyr, TX

Average UV index in December - Zephyr, TX
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December
Zephyr, TX

Average cloud cover in December - Zephyr, TX
  • Average cloud cover in December: 31

The months with the most cloud cover are March and May (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 19).

Average visibility in December
Zephyr, TX

Average visibility in December - Zephyr, 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).

Zephyr, Texas, USA

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