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December Weather in Windsor, United States

Last updated: June 24, 2025

In December, the average temperature in Windsor, United States hovers around 8°C (47°F). Temperatures can swing from a chilly -8°C (18°F) to a mild 24°C (75°F). Visitors can expect 88 mm (3.5 in) of precipitation over the course of about 9 days, with an average humidity level of 84%.

December Temperature in Windsor

In December in Windsor, the average temperature is 8°C (47°F). Maximum temperatures can reach 24°C (75°F) while minimums can drop to as low as -8°C (18°F). It's a great time to explore Windsor, so be prepared for varying weather conditions and pack accordingly!

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

The chart illustrates December temperature patterns in Windsor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Windsor, December typically has an average temperature of 8°C (47°F), with highs reaching up to 24°C (75°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec424751616976807974655246
Data source: Temperature data for Windsor 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 Windsor

In Windsor in December, the precipitation amount is 88 mm (3.5 in) over the course of 9 days.

December Precipitation Trends in Windsor

The chart displays monthly precipitation patterns in Windsor, 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 Windsor, December typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9210587102118114137169130827688
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Windsor

In Windsor in December, humidity is 84%. With an average temperature of 8°C (47°F), this humidity feels like a damp blanket wrapping around you, making travel feel heavy and a bit lethargic, as the air thickens with moisture and each step becomes a little more cumbersome.

December Average Humidity in Windsor

This chart illustrates the average monthly humidity levels in Windsor, 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 Windsor is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Windsor

In Windsor 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 Windsor, you can check the information here.

Maximum UV Index Levels in Windsor for December

The chart shows the monthly maximum UV Index (UVI) for Windsor 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 Windsor typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4689111011109853
Data source: Windsor 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 Windsor Compares to Other Months

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

This table compares monthly weather conditions in Windsor, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)92 mm (3.6 inches)84%moderate
February Weather8°C (47°F)105 mm (4.1 inches)83%high
March Weather11°C (51°F)87 mm (3.4 inches)82%very high
April Weather16°C (61°F)102 mm (4.0 inches)81%very high
May Weather20°C (69°F)118 mm (4.7 inches)80%extreme
June Weather24°C (76°F)114 mm (4.5 inches)82%very high
July Weather27°C (80°F)136 mm (5.4 inches)81%extreme
August Weather26°C (79°F)169 mm (6.7 inches)81%very high
September Weather23°C (74°F)130 mm (5.1 inches)78%very high
October Weather18°C (65°F)82 mm (3.2 inches)80%very high
November Weather11°C (52°F)76 mm (3.0 inches)84%moderate
December Weather8°C (47°F)88 mm (3.5 inches)84%moderate

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