December weather forecast
Sumner, TX

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Weather in December

The first month of the winter, December, is still a cool month in Sumner, Texas, with an average temperature varying between 53.4°F (11.9°C) and 38.8°F (3.8°C).

Temperature

In December, the meteorological conditions change slightly, with the average high-temperature moving from an enjoyable 62.2°F (16.8°C) in November to a cool 53.4°F (11.9°C). An average low-temperature of 38.8°F (3.8°C) marks the nights in Sumner throughout December.

Humidity

The average relative humidity in December in Sumner, Texas, is 75%.

Rainfall

In December, in Sumner, the rain falls for 10.6 days. Throughout December, 3.03" (77mm) of precipitation is accumulated. In Sumner, during the entire year, the rain falls for 148.7 days and collects up to 36.57" (929mm) of precipitation.

Snowfall

April through October and December are months without snowfall.

Daylight

The month with the shortest days in Sumner is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 7:09 am and sunset at 5:14 pm. On the last day of December, in Sumner, sunrise is at 7:27 am and sunset at 5:24 pm CST.

Sunshine

With an average of 5.3h of sunshine, December has the least sunshine of the year in Sumner, Texas.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Sumner. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 3 during December, leads to the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What is the average December temperature in Sumner?

In Sumner, in December, the average high-temperature is 53.4°F (11.9°C), and the average low-temperature is 38.8°F (3.8°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 95°F (35°C).

What is the average humidity in December in Sumner?

The average relative humidity in December is 75%.

How many days does it rain in December in Sumner?

In Sumner, Texas, in December, during 10.6 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When it does not snow in Sumner?

In Sumner, Texas, snow does not fall in April through October and December.

Does it snow in Sumner in December?

In December, in Sumner, it doesn't snow. November is the latest month when it typically snows.

What is the month with the shortest days in Sumner?

The month with the shortest days is December, with an average of 10h and 0min of daylight.

How many hours of daylight does Sumner have in December?

In December, the average day length in Sumner is 9h and 58min.

What time are sunrise and sunset in December in Sumner?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:24 pm CST.

What is the month with the least sunshine in Sumner?

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

How long on average sun shines in December in Sumner?

In December, the average sunshine duration in Sumner, Texas, is 5.3h.

When is the lowest UV index in Sumner?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Sumner.

How high is the UV index in December in Sumner?

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

Average temperature in December
Sumner, TX

Average temperature in December - Sumner, TX
  • Average high temperature in December: 53.4°F

The warmest month (with the highest average high temperature) is August (93.4°F).
The month with the lowest average high temperature is January (52.2°F).

  • Average low temperature in December: 38.8°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).

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Average pressure in December
Sumner, TX

Average pressure in December - Sumner, TX
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Sumner, TX

Average wind speed in December - Sumner, TX
  • Average wind speed in December: 8.3mph

The windiest months (with the highest average wind speed) are February and March (9.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in December
Sumner, TX

Average humidity in December - Sumner, TX
  • Average humidity in December: 75%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in December
Sumner, TX

Average rainfall in December - Sumner, TX
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is January (1.93").

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Average rainfall days in December
Sumner, TX

Average rainfall days in December - Sumner, TX
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is March (14.8 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in December
Sumner, TX

Average snowfall in December - Sumner, TX
  • Average snowfall in December: 0"

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 December (0").

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Average snowfall days in December
Sumner, TX

Average snowfall days in December - Sumner, TX
  • Average snowfall days in December: 0.4 days

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Sumner, TX
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in December
Sumner, TX

Average sunshine days in December - Sumner, TX
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is April (13.8 days).

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Average UV index in December
Sumner, TX

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Sumner, TX

Average cloud cover in December - Sumner, TX
  • Average cloud cover in December: 41

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in December
Sumner, TX

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

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