nomadseason

December Weather in South Hills, United States

Last updated: June 24, 2025

In South Hills, United States, the average temperature in December hovers around -6°C (21°F), with extremes ranging from a chilly -25°C (-13°F) to a rare high of 16°C (61°F). Expect 33 mm (1.3 in) of precipitation over approximately 8 days throughout the month, coupled with a high average humidity of 90%. Prepare for a wintery blend of cold and moisture!

December Temperature in South Hills

In December in South Hills, the average temperature is -6°C (21°F). The maximum can reach 16°C (61°F) and the minimum can dip as low as -25°C (-13°F). Travelers should prepare for a wide range of temperatures and dress accordingly to enjoy their visit.

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

The chart illustrates December temperature patterns in South Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Hills, December typically has an average temperature of -6°C (21°F), with highs reaching up to 16°C (61°F) and lows dropping to around -25°C (-13°F).
JanFebMarAprMayJunJulAugSepOctNovDec191629364858666555393021
Data source: Temperature data for South Hills generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in South Hills

In South Hills in December, the precipitation amount is 33 mm (1.3 in) during a span of 8 days.

December Precipitation Trends in South Hills

The chart displays monthly precipitation patterns in South Hills, 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 Hills, December typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec2351386788107313444413333
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in South Hills

In South Hills in December humidity is 90%. With an average temperature of -6°C (21°F), this humidity feels like a heavy, icy mist that clings to your skin, making every breath feel sharp and cold, which can be quite challenging for traveling.

December Average Humidity in South Hills

This chart illustrates the average monthly humidity levels in South Hills, 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 Hills is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%83%78%76%78%77%71%68%72%84%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in South Hills

In South Hills in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in South Hills, you can visit Hourly UV Index in South Hills.

Maximum UV Index Levels in South Hills for December

The chart shows the monthly maximum UV Index (UVI) for South Hills 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 Hills typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689111098532
Data source: South Hills 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 Hills Compares to Other Months

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

This table compares monthly weather conditions in South Hills, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)23 mm (0.9 inches)87%moderate
February Weather-9°C (16°F)51 mm (2.0 inches)88%moderate
March Weather-2°C (29°F)38 mm (1.5 inches)83%high
April Weather2°C (36°F)67 mm (2.7 inches)78%very high
May Weather9°C (48°F)88 mm (3.5 inches)76%very high
June Weather14°C (58°F)107 mm (4.2 inches)78%extreme
July Weather19°C (67°F)31 mm (1.2 inches)77%very high
August Weather18°C (65°F)34 mm (1.3 inches)71%very high
September Weather13°C (55°F)44 mm (1.7 inches)68%very high
October Weather4°C (40°F)41 mm (1.6 inches)72%moderate
November Weather-1°C (30°F)33 mm (1.3 inches)84%moderate
December Weather-6°C (21°F)33 mm (1.3 inches)90%low

Compare South Hills's Climate with Cities Worldwide