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December Weather in Middletown, United States

Last updated: June 24, 2025

In December, the average temperature in Middletown, United States hovers around 3°C (38°F). Expect a minimum drop to -17°C (2°F) and a pleasant maximum of 19°C (66°F). With an average humidity of 87% and 103 mm (4.0 in) of precipitation spread over 10 days, be prepared for a mix of chilly days and occasional dampness.

December Temperature in Middletown

In December in Middletown, the average temperature is 3°C (38°F), with maximums reaching up to 19°C (66°F) and minimums plummeting as low as -17°C (2°F). Travelers should be prepared for a wide range of temperatures, from chilly days to warmer afternoons.

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

The chart illustrates December temperature patterns in Middletown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Middletown, December typically has an average temperature of 3°C (38°F), with highs reaching up to 19°C (66°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec323544536573777470584337
Data source: Temperature data for Middletown 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 Middletown

In Middletown in December, the precipitation amount is 103 mm (4.0 in) over a span of 10 days.

December Precipitation Trends in Middletown

The chart displays monthly precipitation patterns in Middletown, 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 Middletown, December typically receives around 103 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec81108130109130137117948110098103
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Middletown

In Middletown in December humidity is 87%. With an average temperature of 3°C (38°F), this humidity feels like a chilly blanket wrapped around you, making travel quite uncomfortable as the cold dampness seeps into your clothes and lingers in the air, often leaving you shivering and longing for warmer, drier conditions.

December Average Humidity in Middletown

This chart illustrates the average monthly humidity levels in Middletown, 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 Middletown is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Middletown

In Middletown 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 Middletown, you can check the information here.

Maximum UV Index Levels in Middletown for December

The chart shows the monthly maximum UV Index (UVI) for Middletown 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 Middletown typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Middletown 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 Middletown Compares to Other Months

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

This table compares monthly weather conditions in Middletown, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)81 mm (3.2 inches)88%moderate
February Weather2°C (36°F)108 mm (4.2 inches)88%moderate
March Weather7°C (44°F)130 mm (5.1 inches)87%high
April Weather12°C (53°F)109 mm (4.3 inches)85%very high
May Weather18°C (65°F)130 mm (5.1 inches)81%very high
June Weather23°C (73°F)137 mm (5.4 inches)82%very high
July Weather25°C (77°F)117 mm (4.6 inches)81%very high
August Weather24°C (75°F)94 mm (3.7 inches)73%very high
September Weather21°C (70°F)81 mm (3.2 inches)73%very high
October Weather15°C (59°F)100 mm (3.9 inches)78%high
November Weather6°C (43°F)98 mm (3.9 inches)89%moderate
December Weather3°C (38°F)103 mm (4.0 inches)87%moderate

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