December weather forecast
Hays, TX

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Weather in December

December, the first month of the winter in Hays, is still a mild month, with an average temperature fluctuating between 59.9°F (15.5°C) and 45.1°F (7.3°C).

Temperature

With the commencement of December, Hays records a moderate temperature decline, with the average high easing from November's comfortable 67.6°F (19.8°C) to a mild 59.9°F (15.5°C). December brings Hays a consistent average low-temperature of 45.1°F (7.3°C).

Humidity

The average relative humidity in December is 71%.

Rainfall

In Hays, in December, it is raining for 9.7 days, with typically 1.3" (33mm) of accumulated precipitation. In Hays, Texas, during the entire year, the rain falls for 148 days and collects up to 24.92" (633mm) of precipitation.

Snowfall

January, February, November and December are months with snowfall. In Hays, during December, snow falls for 0.1 days and regularly aggregates up to 0.04" (1mm) of snow. Throughout the year, there are 1 snowfall days, and 0.35" (9mm) of snow is accumulated.

Daylight

With an average of 10h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:10 am and sunset at 5:31 pm. On the last day of December, sunrise is at 7:27 am and sunset at 5:42 pm CST.

Sunshine

The month with the least sunshine in Hays is December, with an average of 5.3h of sunshine.

UV index

The month with the lowest UV index in Hays is 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 UV index of 3 during December translates into the following guidance:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

What are December temperatures in Hays?

Hays in December has an average high-temperature of 59.9°F (15.5°C) and an average low-temperature of 45.1°F (7.3°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is evaluated at 98.6°F (37°C).

What is the average humidity in December in Hays?

In Hays, the average relative humidity in December is 71%.

How much does it rain in Hays in December?

In Hays, in December, during 9.7 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

How much does it snow in Hays in December?

In Hays, in December, during 0.1 snowfall days, 0.04" (1mm) of snow is typically accumulated.

What is the month with the shortest days in Hays?

The month with the shortest days in Hays, Texas, is December, with an average of 10h and 12min of daylight.

How many hours of daylight does Hays have in December?

In December, the average day length in Hays is 10h and 14min.

When is the sunrise / sunset in December in Hays?

On the first day of December in Hays, sunrise is at 7:10 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:42 pm CST.

What is the month with the least sunshine in Hays?

December has the least sunshine of the year, with an average of 5.3h of sunshine.

How long on average sun shines in December in Hays?

In December, the average sunshine duration is 5.3h.

What is the month with the lowest UV index in Hays?

With an average maximum UV index of 3, December is the month with the lowest UV index in Hays, Texas.

What is the UV index intensity in December in Hays?

In December, the average daily maximum UV index in Hays is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
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
Hays, TX

Average temperature in December - Hays, TX
  • Average high temperature in December: 59.9°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 (59.4°F).

  • Average low temperature in December: 45.1°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 (42.4°F).

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Average pressure in December
Hays, TX

Average pressure in December - Hays, 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 (29.91"Hg).

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Average wind speed in December
Hays, TX

Average wind speed in December - Hays, TX
  • Average wind speed in December: 8.2mph

The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).

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Average humidity in December
Hays, TX

Average humidity in December - Hays, TX
  • Average humidity in December: 71%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (61%).

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Average rainfall in December
Hays, TX

Average rainfall in December - Hays, TX
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is February (1.02").

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Average rainfall days in December
Hays, TX

Average rainfall days in December - Hays, TX
  • Average rainfall days in December: 9.7 days

The month with the highest number of rainy days is September (16.4 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in December
Hays, TX

Average snowfall in December - Hays, TX
  • Average snowfall in December: 0.04"

The month with the highest snowfall is January (0.16").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in December
Hays, TX

Average snowfall days in December - Hays, 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).

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

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

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

  • Average sunshine in December: 5h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in December
Hays, TX

Average sunshine days in December - Hays, TX
  • Average sunshine days in December: 18.8 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is June (11.3 days).

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Average UV index in December
Hays, TX

Average UV index in December - Hays, 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).

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Average cloud cover in December
Hays, TX

Average cloud cover in December - Hays, TX
  • Average cloud cover in December: 42

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in December
Hays, TX

Average visibility in December - Hays, 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).

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Hays, Texas, USA

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