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December Weather in Wallkill, United States

Last updated: June 24, 2025

In December, the average temperature in Wallkill, United States hovers around 1°C (34°F), with a minimum dipping as low as -19°C (-2°F) and a maximum reaching 17°C (62°F). Expect 101 mm (4.0 in) of precipitation spread over 11 days, contributing to a notably high average humidity of 80%. Prepare for chilly days and occasional wet weather!

December Temperature in Wallkill

In December in Wallkill, the average temperature is 1°C (34°F). Maximums can reach 17°C (62°F), and minimums can be as low as -19°C (-2°F). Be prepared for a wide range of temperatures, making layered clothing essential for your travels.

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

The chart illustrates December temperature patterns in Wallkill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wallkill, December typically has an average temperature of 1°C (34°F), with highs reaching up to 17°C (62°F) and lows dropping to around -19°C (-2°F).
JanFebMarAprMayJunJulAugSepOctNovDec303338496069757366564234
Data source: Temperature data for Wallkill 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 Wallkill

In Wallkill in December, the precipitation amount is 101 mm (4.0 in) spread over 11 days.

December Precipitation Trends in Wallkill

The chart displays monthly precipitation patterns in Wallkill, 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 Wallkill, December typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7096891191229412312210814289101
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Wallkill

In Wallkill 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 Wallkill

This chart illustrates the average monthly humidity levels in Wallkill, 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 Wallkill 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 Wallkill

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

Maximum UV Index Levels in Wallkill for December

The chart shows the monthly maximum UV Index (UVI) for Wallkill 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 Wallkill typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Wallkill 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 Wallkill Compares to Other Months

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

This table compares monthly weather conditions in Wallkill, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)70 mm (2.8 inches)84%moderate
February Weather0°C (33°F)96 mm (3.8 inches)82%moderate
March Weather4°C (39°F)89 mm (3.5 inches)81%high
April Weather10°C (50°F)118 mm (4.7 inches)78%very high
May Weather15°C (60°F)121 mm (4.8 inches)69%very high
June Weather20°C (69°F)94 mm (3.7 inches)69%very high
July Weather24°C (75°F)123 mm (4.9 inches)62%very high
August Weather23°C (73°F)122 mm (4.8 inches)65%very high
September Weather19°C (66°F)108 mm (4.3 inches)68%very high
October Weather13°C (56°F)142 mm (5.6 inches)74%high
November Weather5°C (42°F)89 mm (3.5 inches)82%moderate
December Weather1°C (34°F)101 mm (4.0 inches)80%low

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