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December Weather in Middletown, United States

Last updated: June 24, 2025

In December, the average temperature in Middletown, United States is a cool 9°C (48°F). Expect minimums dipping to -1°C (31°F) and highs reaching up to 24°C (75°F). With 91 mm (3.6 in) of precipitation over 7 days, it's wise to prepare for some rain. Plus, the average humidity hovers around a comfortable 84%, making it a rather moist time of year!

December Temperature in Middletown

In December in Middletown, the average temperature is 9°C (48°F). The maximum can reach 24°C (75°F) and the minimum can be as low as -1°C (31°F). This weather makes Middletown a versatile destination for travelers, offering both mild and cool experiences throughout the month.

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 9°C (48°F), with highs reaching up to 24°C (75°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec485152596575797873645448
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 91 mm (3.6 in) over a span of 7 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 91 mm (3.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec1321409036243112364691
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 84%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that envelops you, making it essential to dress in layers and stay active, as the moisture in the air can quickly lead to discomfort while traveling.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%80%80%76%70%66%68%72%84%84%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3579111111109743
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 Weather9°C (49°F)132 mm (5.2 inches)86%moderate
February Weather10°C (51°F)140 mm (5.5 inches)84%moderate
March Weather11°C (53°F)90 mm (3.5 inches)83%high
April Weather15°C (59°F)36 mm (1.4 inches)80%very high
May Weather19°C (66°F)24 mm (0.9 inches)80%extreme
June Weather24°C (75°F)3 mm (0.1 inches)76%extreme
July Weather26°C (79°F)0 mm (0.0 inches)70%extreme
August Weather25°C (78°F)1 mm (0.0 inches)66%very high
September Weather23°C (73°F)2 mm (0.1 inches)68%very high
October Weather18°C (65°F)36 mm (1.4 inches)72%high
November Weather12°C (55°F)46 mm (1.8 inches)84%moderate
December Weather9°C (48°F)91 mm (3.6 inches)84%moderate

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