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March Weather in Napanee, Canada

Last updated: June 18, 2025

In March, the average temperature in Napanee, Canada hovers around 0°C (32°F). However, be prepared for a wide range, as temperatures can drop as low as -20°C (-4°F) or soar up to 18°C (64°F). This period also sees about 70 mm (2.8 in) of precipitation spread across 10 days, accompanied by a high average humidity of 86%.

March Temperature in Napanee

In March in Napanee, the average temperature is 0°C (32°F). Maximums can reach 18°C (64°F) and minimums can drop as low as -20°C (-4°F). Be prepared for a wide range of temperatures when traveling to Napanee during this month.

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

The chart illustrates March temperature patterns in Napanee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Napanee, March typically has an average temperature of 0°C (32°F), with highs reaching up to 18°C (64°F) and lows dropping to around -20°C (-4°F).
JanFebMarAprMayJunJulAugSepOctNovDec222432435666727063513728
Data source: Temperature data for Napanee 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 Napanee

In Napanee in March, the precipitation amount is 70 mm (2.8 in) over a period of 10 days.

March Precipitation Trends in Napanee

The chart displays monthly precipitation patterns in Napanee, 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 Napanee, March typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec71737012096909590721379485
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Napanee

In Napanee in March humidity is 86%. With an average temperature of 0°C (32°F), this humidity feels like a biting chill that seeps into your bones, making travel feel uncomfortable and damp, as the cold air combines with the moisture to create a brisk sensation that may deter outdoor exploration.

March Average Humidity in Napanee

This chart illustrates the average monthly humidity levels in Napanee, 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 Napanee is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%86%82%75%68%69%67%72%83%88%89%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Napanee

In Napanee 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 Napanee.

Maximum UV Index Levels in Napanee for March

The chart shows the monthly maximum UV Index (UVI) for Napanee 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 Napanee typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Napanee 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 Napanee Compares to Other Months

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

This table compares monthly weather conditions in Napanee, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)71 mm (2.8 inches)93%low
February Weather-4°C (24°F)73 mm (2.9 inches)93%moderate
March Weather0°C (32°F)70 mm (2.8 inches)86%moderate
April Weather6°C (44°F)120 mm (4.7 inches)82%very high
May Weather14°C (57°F)95 mm (3.8 inches)75%very high
June Weather19°C (66°F)90 mm (3.5 inches)68%very high
July Weather22°C (73°F)95 mm (3.7 inches)69%very high
August Weather21°C (71°F)90 mm (3.6 inches)67%very high
September Weather17°C (63°F)72 mm (2.8 inches)72%high
October Weather11°C (52°F)137 mm (5.4 inches)83%moderate
November Weather3°C (38°F)94 mm (3.7 inches)88%moderate
December Weather-2°C (28°F)85 mm (3.4 inches)89%low

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