December weather forecast
Alton, TX

Weather in December

December, the first month of the winter, in Alton, is also an agreeable month, with average temperature varying between 55.9°F (13.3°C) and 71.2°F (21.8°C).

Temperature

In Alton, the average high-temperature in December slightly decreases, from a moderately hot 77.4°F (25.2°C) in November, to a pleasant 71.2°F (21.8°C). The average low-temperature, in Alton, is 55.9°F (13.3°C).

Humidity

Months with the highest humidity in Alton are May and December, with an average relative humidity of 67%.

Rainfall

February and December are months with the least rain in Alton, Texas, when the rain falls for 3.4 days and typically aggregates up to 0.12" (3mm) of rain.

Snowfall

In Alton snow does not fall in March through December.

Daylight

With an average of 10.5h of daylight, December has the shortest days of the year in Alton.

Sunshine

The month with the least sunshine in Alton is December, with an average of 5.6h of sunshine.

UV index

December is the month with the lowest UV index in Alton, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What are the most humid months in Alton?

Months with the highest humidity in Alton, Texas, are May and December, with an average relative humidity of 67%.

What is the average humidity in December in Alton?

In Alton, the average relative humidity in December is 67%.

What is the driest month in Alton?

February and December are months with the least rain in Alton, Texas, when the rain falls for 3.4 days and typically aggregates up to 0.12" (3mm) of rain.

How much does it rain in Alton in December?

In Alton, Texas, in December, during 3.4 rainfall days, 0.12" (3mm) of precipitation is typically accumulated.

When it does not snow in Alton?

March through December are months without snowfall.

Does it snow in Alton in December?

In Alton, Texas, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days in Alton?

The month with the shortest days in Alton, Texas, is December, with an average of 10.5h of daylight.

How many hours of daylight does Alton have in December?

The average length of the day in December is 10.5h.

What is the month with the least sunshine in Alton?

December has the least sunshine of the year, with an average of 5.6h of sunshine.

How many hours of sunshine does Alton have in December?

In December, the average sunshine in Alton is 5.6h.

When is the lowest UV index in Alton?

The month with the lowest UV index is December, with an average maximum UV index of 4.

What is the UV index reading in December in Alton?

In December, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in December
Alton, TX

Average temperature in December - Alton, TX
  • Average high temperature in December: 71.2°F

The warmest month (with the highest average high temperature) is August (99°F).
The month with the lowest average high temperature is January (69.4°F).

  • Average low temperature in December: 55.9°F

The month with the highest average low temperature is August (79.9°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).

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Average pressure in December
Alton, TX

Average pressure in December - Alton, TX
  • Average pressure in December: 30.07"

The month with the highest atmospheric pressure is January (30.12").
Months with the lowest atmospheric pressure are May and June (29.87").

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Average wind speed in December
Alton, TX

Average wind speed in December - Alton, TX
  • Average wind speed in December: 9.5mph

The windiest months (with the highest average wind speed) are May and July (12.9mph).
The calmest month (with the lowest average wind speed) is September (9.3mph).

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Average humidity in December
Alton, TX

Average humidity in December - Alton, TX
  • Average humidity in December: 67%

Months with the highest relative humidity are May and December (67%).
The month with the lowest relative humidity is August (58%).

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Average rainfall in December
Alton, TX

Average rainfall in December - Alton, TX
  • Average rainfall in December: 0.12"

The wettest month (with the highest rainfall) is July (0.71").
The driest months (with the least rainfall) are February and December (0.12").

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Average rainfall days in December
Alton, TX

Average rainfall days in December - Alton, TX
  • Average rainfall days in December: 3.4 days

The month with the highest number of rainy days is September (11.3 days).
The month with the least rainy days is February (2.9 days).

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Average snowfall days in December
Alton, TX

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

Months with the highest number of snowfall days are January and February (0.1 days).
Months with the least snowfall days are 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
Alton, TX

Average daylight in December / Average sunshine in December - Alton, TX
  • Average daylight in December: 10.5h

The month with the longest days is June (Average daylight: 13.8h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in December: 5.6h

The month with the most sunshine is July (Average sunshine: 11.4h).
The month with the least sunshine is December (Average sunshine: 5.6h).

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Average sunshine days in December
Alton, TX

Average sunshine days in December - Alton, TX
  • Average sunshine days in December: 24.3 days

The month with the most sunshine days is March (24.9 days).
The month with the least sunshine days is September (15.6 days).

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Average UV index in December
Alton, TX

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

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

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Average cloud cover in December
Alton, TX

Average cloud cover in December - Alton, TX
  • Average cloud cover in December: 38

The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 17).

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Average visibility in December
Alton, TX

Average visibility in December - Alton, TX
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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