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December Weather in Reading, United States

Last updated: June 24, 2025

In December, the average temperature in Reading, United States hovers around 0°C (33°F). However, it can dip as low as -22°C (-7°F) and rise to a maximum of 16°C (61°F). Expect about 58 mm (2.3 in) of precipitation spread over 9 days, with humidity levels averaging a brisk 86%.

December Temperature in Reading

In December in Reading, the average temperature is 0°C (33°F). Maximums can reach 16°C (61°F) and minimums can be as low as -22°C (-7°F). This temperature range suggests that travelers should pack warm clothing and be prepared for both chilly and relatively mild days.

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

The chart illustrates December temperature patterns in Reading, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Reading, December typically has an average temperature of 0°C (33°F), with highs reaching up to 16°C (61°F) and lows dropping to around -22°C (-7°F).
JanFebMarAprMayJunJulAugSepOctNovDec272838476070747266543933
Data source: Temperature data for Reading 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 Reading

In Reading in December, the precipitation amount is 58 mm (2.3 in) spread over 9 days.

December Precipitation Trends in Reading

The chart displays monthly precipitation patterns in Reading, 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 Reading, December typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec72739610214111612794671128358
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Reading

In Reading in December humidity is 86%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that permeates your clothes, making traveling uncomfortable and necessitating warm, layered clothing to stay dry and cozy.

December Average Humidity in Reading

This chart illustrates the average monthly humidity levels in Reading, 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 Reading is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Reading

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

Maximum UV Index Levels in Reading for December

The chart shows the monthly maximum UV Index (UVI) for Reading 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 Reading typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35699101098642
Data source: Reading 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 Reading Compares to Other Months

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

This table compares monthly weather conditions in Reading, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)72 mm (2.9 inches)88%moderate
February Weather-2°C (28°F)73 mm (2.9 inches)87%moderate
March Weather3°C (38°F)96 mm (3.8 inches)87%high
April Weather9°C (48°F)102 mm (4.0 inches)87%very high
May Weather16°C (61°F)141 mm (5.6 inches)81%very high
June Weather21°C (71°F)116 mm (4.6 inches)82%very high
July Weather24°C (75°F)127 mm (5.0 inches)81%very high
August Weather22°C (72°F)94 mm (3.7 inches)78%very high
September Weather19°C (66°F)67 mm (2.6 inches)78%very high
October Weather12°C (54°F)111 mm (4.4 inches)82%high
November Weather4°C (39°F)83 mm (3.3 inches)89%moderate
December Weather0°C (33°F)58 mm (2.3 inches)86%low

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