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May Weather in Greenstone, Canada

Last updated: June 18, 2025

In May, the average temperature in Greenstone, Canada hovers around 8°C (47°F), with minimums dipping to -8°C (18°F) and maximums soaring to 28°C (83°F). Expect about 59 mm (2.3 in) of precipitation spread across 10 days, accompanied by a relatively high average humidity of 77%.

May Temperature in Greenstone

In May in Greenstone, the average temperature is 8°C (47°F), with maximums reaching 28°C (83°F) and minimums dropping as low as -8°C (18°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

May Weather in Greenstone: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Greenstone, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenstone, May typically has an average temperature of 8°C (47°F), with highs reaching up to 28°C (83°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec4418304759656252402410
Data source: Temperature data for Greenstone 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.

May Precipitation in Greenstone

In Greenstone in May, the precipitation amount is 59 mm (2.3 in) over the course of 10 days.

May Precipitation Trends in Greenstone

The chart displays monthly precipitation patterns in Greenstone, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Greenstone, May typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec2743375959777070123846455
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Greenstone

In Greenstone in May, humidity is 77%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that can make even short walks outside feel uncomfortable, often clinging to your skin and making you long for warmer, drier conditions.

May Average Humidity in Greenstone

This chart illustrates the average monthly humidity levels in Greenstone, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Greenstone is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%94%93%89%77%71%67%72%78%84%88%94%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Greenstone

In Greenstone in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Greenstone.

Maximum UV Index Levels in Greenstone for May

The chart shows the monthly maximum UV Index (UVI) for Greenstone in May, 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 May, the maximum UV index in Greenstone typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234789886421
Data source: Greenstone May 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 May Weather in Greenstone Compares to Other Months

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

This table compares monthly weather conditions in Greenstone, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-15°C (5°F)27 mm (1.1 inches)95%low
February Weather-15°C (5°F)43 mm (1.7 inches)94%moderate
March Weather-8°C (18°F)37 mm (1.4 inches)93%moderate
April Weather-1°C (31°F)59 mm (2.3 inches)89%high
May Weather8°C (47°F)59 mm (2.3 inches)77%very high
June Weather15°C (59°F)77 mm (3.0 inches)71%very high
July Weather18°C (66°F)70 mm (2.8 inches)67%very high
August Weather16°C (62°F)70 mm (2.8 inches)71%very high
September Weather11°C (53°F)123 mm (4.8 inches)78%high
October Weather4°C (40°F)84 mm (3.3 inches)84%moderate
November Weather-4°C (24°F)64 mm (2.5 inches)88%low
December Weather-12°C (11°F)55 mm (2.2 inches)94%low

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