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April Weather in Black River, United States

Last updated: June 24, 2025

In April, the average temperature in Black River, United States hovers around 6°C (44°F). However, temperatures can fluctuate significantly, with a minimum of -7°C (19°F) to a maximum of 29°C (84°F). Expect about 127 mm (5.0 in) of precipitation over the course of 14 days, and be prepared for high humidity, averaging 88%.

April Temperature in Black River

In April in Black River, the average temperature is 6°C (44°F). Maximum temperatures can reach 29°C (84°F), while minimums can dip as low as -7°C (19°F). This wide range of temperatures means travelers should pack for both warm days and chilly nights.

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

The chart illustrates April 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, April typically has an average temperature of 6°C (44°F), with highs reaching up to 29°C (84°F) and lows dropping to around -7°C (19°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.

April Precipitation in Black River

In Black River in April, the total precipitation amount is 127 mm (5.0 in), occurring over the course of 14 days.

April Precipitation Trends in Black River

The chart displays monthly precipitation patterns in Black River, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Black River, April typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec100949512711211716912684169131110
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Black River

In Black River in April humidity is 88%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures less inviting and requiring warm, layered clothing to stay comfortable while exploring.

April Average Humidity in Black River

This chart illustrates the average monthly humidity levels in Black River, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Black River is approximately 88%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Black River

In Black River in April, 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 Black River.

Maximum UV Index Levels in Black River for April

The chart shows the monthly maximum UV Index (UVI) for Black River in April, 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 April, the maximum UV index in Black River typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246899997532
Data source: Black River April 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 April 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 April’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 April’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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