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December Weather in Lachute, Canada

Last updated: June 18, 2025

In Lachute, Canada, the average temperature in December hovers around -7°C (20°F). Expect chilly extremes, with minimum temperatures dipping to -28°C (-18°F) and a maximum of 13°C (55°F). During this month, 97 mm (3.8 in) of precipitation is typical, spread across 12 days, creating a backdrop of 89% humidity that adds to the wintery atmosphere.

December Temperature in Lachute

In December in Lachute, the average temperature is -7°C (20°F), with maximums reaching 13°C (55°F) and minimums dipping as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for extreme cold during this time.

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

The chart illustrates December temperature patterns in Lachute, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lachute, December typically has an average temperature of -7°C (20°F), with highs reaching up to 13°C (55°F) and lows dropping to around -28°C (-18°F).
JanFebMarAprMayJunJulAugSepOctNovDec141726405564696759473120
Data source: Temperature data for Lachute 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 Lachute

In Lachute in December, the precipitation amount is 97 mm (3.8 in) spread over 12 days.

December Precipitation Trends in Lachute

The chart displays monthly precipitation patterns in Lachute, 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 Lachute, December typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8894961211151161291179813711597
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lachute

In Lachute in December humidity is 89%. With an average temperature of -7°C (20°F), this humidity feels like a biting chill that seeps into your bones, making travel quite uncomfortable as you navigate the frosty air that clings to every breath.

December Average Humidity in Lachute

This chart illustrates the average monthly humidity levels in Lachute, 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 Lachute is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lachute

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

Maximum UV Index Levels in Lachute for December

The chart shows the monthly maximum UV Index (UVI) for Lachute 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 Lachute typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Lachute 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 Lachute Compares to Other Months

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

This table compares monthly weather conditions in Lachute, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)88 mm (3.5 inches)93%low
February Weather-8°C (17°F)93 mm (3.7 inches)92%moderate
March Weather-3°C (26°F)95 mm (3.8 inches)86%moderate
April Weather4°C (40°F)121 mm (4.8 inches)85%high
May Weather13°C (55°F)115 mm (4.5 inches)80%very high
June Weather18°C (64°F)116 mm (4.6 inches)74%very high
July Weather21°C (69°F)129 mm (5.1 inches)76%very high
August Weather19°C (67°F)117 mm (4.6 inches)75%very high
September Weather15°C (59°F)98 mm (3.8 inches)78%high
October Weather8°C (47°F)137 mm (5.4 inches)86%moderate
November Weather0°C (32°F)115 mm (4.5 inches)88%moderate
December Weather-7°C (20°F)97 mm (3.8 inches)89%low

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