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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 1°C (34°F). Expect chilly days, with temperatures ranging from a brisk -18°C (-1°F) at night to a mild 16°C (61°F) during the day. Precipitation is quite common, with approximately 103 mm (4.1 in) of rain spread over 10 days. Additionally, the average humidity remains high at 80%, contributing to a crisp and damp atmosphere.

December Temperature in Middletown

In December in Middletown, the average temperature is 1°C (34°F). Maximum temperatures can reach 16°C (61°F), while minimums can plummet to as low as -18°C (-1°F). Travelers should be prepared for a wide range of temperatures when visiting.

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 1°C (34°F), with highs reaching up to 16°C (61°F) and lows dropping to around -18°C (-1°F).
JanFebMarAprMayJunJulAugSepOctNovDec293237485968747266554134
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 (4.1 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 (4.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec731019211912510212112610014690104
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 80%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill that seeps through your layers, making outdoor activities uncomfortable and potentially discouraging for travelers.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
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 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 Middletown, you can visit Hourly UV Index in Middletown.

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 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
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 Weather-2°C (30°F)73 mm (2.9 inches)84%moderate
February Weather0°C (32°F)101 mm (4.0 inches)82%moderate
March Weather3°C (38°F)92 mm (3.6 inches)81%high
April Weather9°C (49°F)119 mm (4.7 inches)78%very high
May Weather15°C (60°F)125 mm (4.9 inches)69%very high
June Weather20°C (68°F)102 mm (4.0 inches)69%very high
July Weather23°C (74°F)121 mm (4.8 inches)62%very high
August Weather22°C (72°F)126 mm (4.9 inches)65%very high
September Weather19°C (66°F)100 mm (3.9 inches)68%very high
October Weather13°C (56°F)145 mm (5.7 inches)74%high
November Weather5°C (41°F)90 mm (3.5 inches)82%moderate
December Weather1°C (34°F)103 mm (4.1 inches)80%low

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