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May Weather in Black River, United States

Last updated: June 24, 2025

In Black River, United States, the average temperature in May is a mild 14°C (57°F). However, temperatures can range from a chilly -3°C (28°F) to a scorching 32°C (89°F). Expect 112 mm (4.4 in) of precipitation spread over 14 days, contributing to an average humidity of 82%. Prepare for varied weather, making layering your best friend this month!

May Temperature in Black River

In May in Black River, the average temperature is 14°C (57°F). Maximums can reach 32°C (89°F), and minimums can be as low as -3°C (28°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

May Weather in Black River: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Black River, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Black River, May typically has an average temperature of 14°C (57°F), with highs reaching up to 32°C (89°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec212431445665706861513627
Data source: Temperature data for Black River 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 Black River

In Black River in May, the precipitation amount is 112 mm (4.4 in) spread over 14 days.

May Precipitation Trends in Black River

The chart displays monthly precipitation patterns in Black River, 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 Black River, May typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec100949512711211716912684169131110
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Black River

In Black River in May, humidity is 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.

May Average Humidity in Black River

This chart illustrates the average monthly humidity levels in Black River, 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 Black River is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Black River

In Black River in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Black River.

Maximum UV Index Levels in Black River for May

The chart shows the monthly maximum UV Index (UVI) for Black River 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 Black River typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246899997532
Data source: Black River 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 Black River Compares to Other Months

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

This table compares monthly weather conditions in Black River, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)100 mm (3.9 inches)90%low
February Weather-4°C (24°F)94 mm (3.7 inches)90%moderate
March Weather0°C (31°F)95 mm (3.7 inches)87%high
April Weather6°C (44°F)127 mm (5.0 inches)88%very high
May Weather14°C (57°F)112 mm (4.4 inches)82%very high
June Weather18°C (65°F)117 mm (4.6 inches)79%very high
July Weather21°C (71°F)169 mm (6.7 inches)78%very high
August Weather20°C (69°F)126 mm (5.0 inches)76%very high
September Weather16°C (62°F)84 mm (3.3 inches)78%high
October Weather10°C (51°F)169 mm (6.6 inches)84%moderate
November Weather2°C (36°F)131 mm (5.2 inches)89%moderate
December Weather-3°C (27°F)110 mm (4.3 inches)86%low

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