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December Weather in Westmoreland, United States

Last updated: June 24, 2025

In December, the average temperature in Westmoreland, United States hovers around 2°C (36°F). Temperature extremes can vary widely, with a minimum of -18°C (-1°F) and a maximum reaching up to 24°C (75°F). Expect some rain, with an average precipitation amount of 27 mm (1.1 in) over approximately 3 days. Humidity is relatively high, averaging 84%, creating a chilly yet damp atmosphere.

December Temperature in Westmoreland

In December in Westmoreland, the average temperature is 2°C (36°F). The maximum can reach 24°C (75°F) and the minimum can be as low as -18°C (-1°F). Be prepared for a wide range of temperatures during your travels, from chilly mornings to pleasantly warm afternoons.

December Weather in Westmoreland: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Westmoreland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westmoreland, December typically has an average temperature of 2°C (36°F), with highs reaching up to 24°C (75°F) and lows dropping to around -18°C (-1°F).
JanFebMarAprMayJunJulAugSepOctNovDec303145536577807672554336
Data source: Temperature data for Westmoreland 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 Westmoreland

In Westmoreland in December, the total precipitation amount is 27 mm (1.1 in) over the course of 3 days.

December Precipitation Trends in Westmoreland

The chart displays monthly precipitation patterns in Westmoreland, 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 Westmoreland, December typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec323095732069891107711123427
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Westmoreland

In Westmoreland in December, humidity is 84%. With an average temperature of 2°C (36°F), this humidity feels like a cold, damp blanket wrapping around you, making outdoor activities less inviting and requiring extra layers to stay comfortable while traveling.

December Average Humidity in Westmoreland

This chart illustrates the average monthly humidity levels in Westmoreland, 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 Westmoreland is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%78%70%73%82%82%81%78%71%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Westmoreland

In Westmoreland in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Westmoreland, you can check the information here.

Maximum UV Index Levels in Westmoreland for December

The chart shows the monthly maximum UV Index (UVI) for Westmoreland 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 Westmoreland typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Westmoreland 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 Westmoreland Compares to Other Months

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

This table compares monthly weather conditions in Westmoreland, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)31 mm (1.2 inches)76%moderate
February Weather-1°C (31°F)30 mm (1.2 inches)77%moderate
March Weather7°C (45°F)95 mm (3.7 inches)70%high
April Weather12°C (54°F)72 mm (2.9 inches)73%very high
May Weather18°C (65°F)206 mm (8.1 inches)82%very high
June Weather25°C (77°F)97 mm (3.8 inches)82%extreme
July Weather27°C (80°F)91 mm (3.6 inches)81%extreme
August Weather25°C (77°F)107 mm (4.2 inches)78%very high
September Weather22°C (72°F)71 mm (2.8 inches)71%very high
October Weather13°C (56°F)112 mm (4.4 inches)71%high
November Weather6°C (43°F)34 mm (1.4 inches)81%moderate
December Weather2°C (36°F)27 mm (1.1 inches)84%moderate

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