December weather forecast
Harlingen, TX

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Weather in December

December, the first month of the winter in Harlingen, is still a pleasant month, with an average temperature fluctuating between 70.7°F and 58.1°F.

Temperature

Harlingen observes a small decrease in the average high-temperature with the arrival of December, falling from November's moderately hot 76.5°F to an agreeable 70.7°F. In December, Harlingen experiences an average nighttime temperature of 58.1°F.

Humidity

The average relative humidity in December in Harlingen is 72%.

Rainfall

In December, in Harlingen, the rain falls for 5.5 days. Throughout December, 0.24" of precipitation is accumulated. Throughout the year, there are 79.8 rainfall days, and 5.24" of precipitation is accumulated.

Snowfall

In Harlingen, snow does not fall in January, March through December.

Daylight

With an average of 10h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:01 am and sunset at 5:38 pm. On the last day of December, sunrise is at 7:17 am and sunset at 5:49 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 5.1h of sunshine.

UV index

With an average maximum UV index of 4, December is the month with the lowest UV index in Harlingen. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum UV index of 4 in December translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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FAQ

What are December temperatures in Harlingen?

In December, in Harlingen, the average high-temperature is 70.7°F, and the average low-temperature is 58.1°F. In October, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 91.4°F.

What is the average humidity in December in Harlingen?

In Harlingen, Texas, the average relative humidity in December is 72%.

How much does it rain in Harlingen in December?

In Harlingen, in December, during 5.5 rainfall days, 0.24" of precipitation is typically accumulated.

When it does not snow in Harlingen?

January, March through December are months without snowfall.

What is the month with the shortest days in Harlingen?

With an average of 10h and 30min of daylight, December has the shortest days of the year.

How many hours of daylight does Harlingen have in December?

The average day length in December is 10h and 32min.

What time are sunrise and sunset in December in Harlingen?

On the first day of December, sunrise is at 7:01 am and sunset at 5:38 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:49 pm CST.

What is the month with the least sunshine in Harlingen?

With an average of 5.1h of sunshine, December has the least sunshine of the year in Harlingen, Texas.

How long on average sun shines in December in Harlingen?

The average sunshine duration in December is 5.1h.

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

With an average maximum UV index of 4, December is the month with the lowest UV index in Harlingen, Texas.

What is the UV index intensity in December in Harlingen?

In Harlingen, Texas, the average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
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
Harlingen, TX

Average temperature in December - Harlingen, TX
  • Average high temperature in December: 70.7°F

The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (68.7°F).

  • Average low temperature in December: 58.1°F

The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (55.4°F).

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Average pressure in December
Harlingen, TX

Average pressure in December - Harlingen, TX
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in December
Harlingen, TX

Average wind speed in December - Harlingen, TX
  • Average wind speed in December: 10.5mph

The windiest months (with the highest average wind speed) are March and April (12.1mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).

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Average humidity in December
Harlingen, TX

Average humidity in December - Harlingen, TX
  • Average humidity in December: 72%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in December
Harlingen, TX

Average rainfall in December - Harlingen, TX
  • Average rainfall in December: 0.24"

The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is February (0.16").

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Average rainfall days in December
Harlingen, TX

Average rainfall days in December - Harlingen, TX
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is September (11.5 days).
The month with the least rainy days is February (4.7 days).

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Average snowfall days in December
Harlingen, TX

Average snowfall days in December - Harlingen, TX
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in December / Average sunshine in December - Harlingen, TX
  • Average daylight in December: 10h and 3min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in December
Harlingen, TX

Average sunshine days in December - Harlingen, TX
  • Average sunshine days in December: 22.9 days

The month with the most sunshine days is March (23.3 days).
The month with the least sunshine days is September (15.6 days).

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Average UV index in December
Harlingen, TX

Average UV index in December - Harlingen, TX
  • Average UV index in December: 4

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in December
Harlingen, TX

Average cloud cover in December - Harlingen, TX
  • Average cloud cover in December: 45

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 18).

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Average visibility in December
Harlingen, TX

Average visibility in December - Harlingen, 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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Harlingen, Texas, USA

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