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December Weather in South Alamo, United States

Last updated: June 24, 2025

In December, the average temperature in South Alamo, United States hovers around 18°C (65°F), providing a pleasant climate. Visitors can expect a comfortable minimum of 1°C (34°F) and a warm maximum of 34°C (93°F). The region receives about 22 mm (0.8 in) of precipitation over 3 days, contributing to an average humidity of 86%, which adds a touch of tropical feel to the air. Enjoy the diverse weather conditions as you explore this captivating locale!

December Temperature in South Alamo

In December in South Alamo, the average temperature is 18°C (65°F). The maximum can reach 34°C (93°F), and the minimum can be as low as 1°C (34°F). This temperature range makes South Alamo an ideal destination for travelers looking to enjoy a variety of outdoor activities.

December Weather in South Alamo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in South Alamo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Alamo, December typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (93°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec626572778285868783776964
Data source: Temperature data for South Alamo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in South Alamo

In South Alamo in December, the total precipitation amount is 22 mm (0.8 in) over the course of 3 days.

December Precipitation Trends in South Alamo

The chart displays monthly precipitation patterns in South Alamo, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In South Alamo, December typically receives around 22 mm (0.8 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec2322323086879728101583022
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in South Alamo

In South Alamo in December humidity is 86%. With an average temperature of 18°C (65°F), this humidity feels like you’re wrapped in a warm, heavy blanket, making outdoor activities feel quite muggy and sticky for traveling.

December Average Humidity in South Alamo

This chart illustrates the average monthly humidity levels in South Alamo, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in South Alamo is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%76%77%80%73%66%65%73%76%80%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in South Alamo

In South Alamo in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in South Alamo, you can refer to this Hourly UV Index in South Alamo.

Maximum UV Index Levels in South Alamo for December

The chart shows the monthly maximum UV Index (UVI) for South Alamo in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in South Alamo typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6910111212121211976
Data source: South Alamo December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in South Alamo Compares to Other Months

Weather in South Alamo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in South Alamo, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in South Alamo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (62°F)22 mm (0.9 inches)83%high
February Weather18°C (65°F)22 mm (0.9 inches)79%very high
March Weather22°C (72°F)32 mm (1.2 inches)76%very high
April Weather25°C (77°F)30 mm (1.2 inches)77%extreme
May Weather28°C (82°F)86 mm (3.4 inches)80%extreme
June Weather29°C (85°F)87 mm (3.4 inches)73%extreme
July Weather30°C (86°F)97 mm (3.8 inches)66%extreme
August Weather31°C (88°F)28 mm (1.1 inches)65%extreme
September Weather29°C (84°F)101 mm (4.0 inches)73%extreme
October Weather25°C (77°F)58 mm (2.3 inches)76%very high
November Weather21°C (69°F)30 mm (1.2 inches)80%high
December Weather18°C (65°F)22 mm (0.8 inches)86%high

Compare South Alamo's Climate with Cities Worldwide