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December Weather in Selinsgrove, United States

Last updated: June 24, 2025

In Selinsgrove, United States, the average temperature in December hovers around 2°C (36°F), with a chilly minimum of -15°C (6°F) and a pleasantly mild maximum of 17°C (63°F). You can expect around 84 mm (3.3 in) of precipitation over approximately 11 days, contributing to a notably high average humidity of 85%. Prepare for a month that blends brisk days with cozy indoor moments!

December Temperature in Selinsgrove

In December in Selinsgrove, the average temperature is 2°C (36°F). Maximums can reach 17°C (63°F) and minimums can be as low as -15°C (6°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack accordingly for both chilly and milder conditions.

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

The chart illustrates December temperature patterns in Selinsgrove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Selinsgrove, December typically has an average temperature of 2°C (36°F), with highs reaching up to 17°C (63°F) and lows dropping to around -15°C (6°F).
JanFebMarAprMayJunJulAugSepOctNovDec313441516271767468574336
Data source: Temperature data for Selinsgrove 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 Selinsgrove

In Selinsgrove, in December, the precipitation amount is 84 mm (3.3 in) during a period of 11 days.

December Precipitation Trends in Selinsgrove

The chart displays monthly precipitation patterns in Selinsgrove, 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 Selinsgrove, December typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec699789103119871291191171119184
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Selinsgrove

In Selinsgrove 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 Selinsgrove

This chart illustrates the average monthly humidity levels in Selinsgrove, 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 Selinsgrove is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Selinsgrove

In Selinsgrove 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 Selinsgrove, you can visit Hourly UV Index in Selinsgrove.

Maximum UV Index Levels in Selinsgrove for December

The chart shows the monthly maximum UV Index (UVI) for Selinsgrove 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 Selinsgrove typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Selinsgrove 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 Selinsgrove Compares to Other Months

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

This table compares monthly weather conditions in Selinsgrove, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (31°F)69 mm (2.7 inches)87%moderate
February Weather1°C (34°F)97 mm (3.8 inches)85%moderate
March Weather5°C (41°F)89 mm (3.5 inches)85%high
April Weather11°C (51°F)103 mm (4.1 inches)83%very high
May Weather17°C (62°F)119 mm (4.7 inches)75%very high
June Weather22°C (71°F)87 mm (3.4 inches)73%very high
July Weather25°C (77°F)129 mm (5.1 inches)65%very high
August Weather23°C (74°F)119 mm (4.7 inches)62%very high
September Weather20°C (68°F)117 mm (4.6 inches)66%very high
October Weather14°C (58°F)111 mm (4.4 inches)79%high
November Weather6°C (43°F)91 mm (3.6 inches)87%moderate
December Weather2°C (36°F)84 mm (3.3 inches)85%low

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