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December Weather in Scranton, United States

Last updated: June 24, 2025

In December, the average temperature in Scranton, United States is a brisk 3°C (38°F). Expect fluctuations, with minimums dipping to -17°C (1°F) and highs reaching up to 22°C (73°F). During this period, the region sees an average precipitation of 33 mm (1.3 in) over the span of 3 days, accompanied by a high average humidity of 84%. Be prepared for a mix of cold air and damp conditions!

December Temperature in Scranton

In December in Scranton, the average temperature is 3°C (38°F), with maximums reaching 22°C (73°F) and minimums dropping as low as -17°C (1°F). Travelers should be prepared for a wide range of temperatures during this month.

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

The chart illustrates December temperature patterns in Scranton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Scranton, December typically has an average temperature of 3°C (38°F), with highs reaching up to 22°C (73°F) and lows dropping to around -17°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec323347546677807772574538
Data source: Temperature data for Scranton 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 Scranton

In Scranton in December, the precipitation amount is 33 mm (1.3 in) over the course of 3 days.

December Precipitation Trends in Scranton

The chart displays monthly precipitation patterns in Scranton, 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 Scranton, December typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec45301009220010394127831213833
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Scranton

In Scranton in December, humidity is 84%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as the cold air clings to you and the moisture creates an oppressive heaviness in the atmosphere.

December Average Humidity in Scranton

This chart illustrates the average monthly humidity levels in Scranton, 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 Scranton 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 Scranton

In Scranton 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 Scranton, you can check the information here.

Maximum UV Index Levels in Scranton for December

The chart shows the monthly maximum UV Index (UVI) for Scranton 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 Scranton typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109643
Data source: Scranton 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 Scranton Compares to Other Months

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

This table compares monthly weather conditions in Scranton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)45 mm (1.8 inches)76%moderate
February Weather1°C (33°F)30 mm (1.2 inches)77%high
March Weather8°C (47°F)100 mm (3.9 inches)70%high
April Weather12°C (55°F)92 mm (3.6 inches)73%very high
May Weather19°C (66°F)200 mm (7.9 inches)82%very high
June Weather25°C (78°F)103 mm (4.0 inches)82%extreme
July Weather27°C (80°F)94 mm (3.7 inches)81%extreme
August Weather25°C (77°F)127 mm (5.0 inches)78%very high
September Weather22°C (72°F)83 mm (3.3 inches)71%very high
October Weather14°C (57°F)121 mm (4.8 inches)71%high
November Weather7°C (45°F)38 mm (1.5 inches)81%moderate
December Weather3°C (38°F)33 mm (1.3 inches)84%moderate

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