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December Weather in Westernport, United States

Last updated: June 24, 2025

In December, the average temperature in Westernport, United States hovers around 2°C (36°F), creating a chilly atmosphere. Expect temperatures to drop as low as -16°C (3°F) at times, while reaching a comfortable 20°C (69°F) on warmer days. With 96 mm (3.8 in) of precipitation spread over 11 days, it's wise to keep an umbrella handy. The average humidity stands at a brisk 85%, adding to the season's refreshing feel.

December Temperature in Westernport

In December in Westernport, the average temperature is 2°C (36°F). Maximum temperatures can reach 20°C (69°F), while minimums can drop as low as -16°C (3°F). Be prepared for a wide range of temperatures when traveling to Westernport during this time.

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

The chart illustrates December temperature patterns in Westernport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westernport, December typically has an average temperature of 2°C (36°F), with highs reaching up to 20°C (69°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec313641516169747266564136
Data source: Temperature data for Westernport 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 Westernport

In Westernport in December, the precipitation amount is 96 mm (3.8 in) spread over 11 days, resulting in a significant accumulation of rainfall.

December Precipitation Trends in Westernport

The chart displays monthly precipitation patterns in Westernport, 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 Westernport, December typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec711078711513211485981241076496
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Westernport

In Westernport in December, humidity is 85%. With an average temperature of 2°C (36°F), this humidity feels like an icy blanket clinging to your skin, making travel challenging as the cold dampness seeps into your bones and fogs your breath.

December Average Humidity in Westernport

This chart illustrates the average monthly humidity levels in Westernport, 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 Westernport is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Westernport

In Westernport 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 Westernport, you can check the information here.

Maximum UV Index Levels in Westernport for December

The chart shows the monthly maximum UV Index (UVI) for Westernport 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 Westernport typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710101010108753
Data source: Westernport 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 Westernport Compares to Other Months

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

This table compares monthly weather conditions in Westernport, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)71 mm (2.8 inches)86%moderate
February Weather2°C (36°F)107 mm (4.2 inches)86%moderate
March Weather5°C (41°F)87 mm (3.4 inches)86%high
April Weather10°C (51°F)115 mm (4.5 inches)84%very high
May Weather16°C (61°F)132 mm (5.2 inches)78%very high
June Weather20°C (69°F)114 mm (4.5 inches)79%very high
July Weather23°C (74°F)85 mm (3.3 inches)70%very high
August Weather22°C (72°F)98 mm (3.9 inches)59%very high
September Weather19°C (66°F)124 mm (4.9 inches)68%very high
October Weather13°C (56°F)106 mm (4.2 inches)80%high
November Weather5°C (42°F)64 mm (2.5 inches)86%moderate
December Weather2°C (36°F)96 mm (3.8 inches)85%moderate

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