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March Weather in Montreal, United States

Last updated: June 24, 2025

In Montreal, United States, the average temperature in March hovers around -2°C (28°F), with minimums plunging to -25°C (-12°F) and maximums reaching 19°C (66°F). Expect 52 mm (2.0 in) of precipitation spread over about 7 days, accompanied by an average humidity of 89%. Stay warm and prepare for a damp, chilly month!

March Temperature in Montreal

In March in Montreal, the average temperature is -2°C (28°F), with maximums reaching 19°C (66°F) and minimums dropping as low as -25°C (-12°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly and milder conditions.

March Weather in Montreal: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Montreal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montreal, March typically has an average temperature of -2°C (28°F), with highs reaching up to 19°C (66°F) and lows dropping to around -25°C (-12°F).
JanFebMarAprMayJunJulAugSepOctNovDec161528385465706660463122
Data source: Temperature data for Montreal 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.

March Precipitation in Montreal

In Montreal in March, the precipitation amount is 52 mm (2.0 in) over a duration of 7 days.

March Precipitation Trends in Montreal

The chart displays monthly precipitation patterns in Montreal, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Montreal, March typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec395252878711187110941126174
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Montreal

In Montreal in March, humidity is 89%. With an average temperature of -2°C (28°F), this humidity feels like a heavy blanket, making it difficult to stay warm while traveling outdoors.

March Average Humidity in Montreal

This chart illustrates the average monthly humidity levels in Montreal, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Montreal is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%89%85%76%71%70%71%73%82%88%91%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Montreal

In Montreal in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Montreal.

Maximum UV Index Levels in Montreal for March

The chart shows the monthly maximum UV Index (UVI) for Montreal in March, 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 March, the maximum UV index in Montreal typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458810987532
Data source: Montreal March 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 March Weather in Montreal Compares to Other Months

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

This table compares monthly weather conditions in Montreal, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)39 mm (1.5 inches)93%low
February Weather-9°C (16°F)52 mm (2.1 inches)93%moderate
March Weather-2°C (28°F)52 mm (2.0 inches)89%moderate
April Weather3°C (38°F)87 mm (3.4 inches)85%very high
May Weather12°C (54°F)87 mm (3.4 inches)76%very high
June Weather18°C (65°F)111 mm (4.4 inches)71%very high
July Weather21°C (70°F)87 mm (3.4 inches)70%very high
August Weather19°C (67°F)110 mm (4.3 inches)71%very high
September Weather15°C (60°F)94 mm (3.7 inches)73%high
October Weather8°C (46°F)112 mm (4.4 inches)81%moderate
November Weather-1°C (31°F)61 mm (2.4 inches)87%moderate
December Weather-6°C (22°F)74 mm (2.9 inches)91%low

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