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April Weather in Black Diamond, United States

Last updated: June 24, 2025

In April, the average temperature in Black Diamond, United States hovers around 8°C (47°F). While you might experience chilly minimums dipping to -4°C (26°F), the temperature can also reach a warm 28°C (83°F). Expect about 142 mm (5.6 in) of precipitation spread over 16 days, with humidity levels averaging a crisp 84%.

April Temperature in Black Diamond

In April in Black Diamond, the average temperature is 8°C (47°F), with maximums reaching up to 28°C (83°F) and minimums dropping as low as -4°C (26°F). This diverse temperature range makes it essential for travelers to pack accordingly for both warm days and chilly evenings.

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

The chart illustrates April temperature patterns in Black Diamond, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Black Diamond, April typically has an average temperature of 8°C (47°F), with highs reaching up to 28°C (83°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec393742475458636458484338
Data source: Temperature data for Black Diamond 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 Diamond

In Black Diamond in April, the precipitation amount is 142 mm (5.6 in) distributed over 16 days.

April Precipitation Trends in Black Diamond

The chart displays monthly precipitation patterns in Black Diamond, 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 Diamond, April typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec20624616014284752121105197223244
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Black Diamond

In Black Diamond in April, humidity is 84%. With an average temperature of 8°C (47°F), this humidity feels like a damp blanket wrapping around you, making travel feel heavy and a bit lethargic, as the air thickens with moisture and each step becomes a little more cumbersome.

April Average Humidity in Black Diamond

This chart illustrates the average monthly humidity levels in Black Diamond, 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 Diamond is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%87%84%81%82%79%63%62%83%89%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Black Diamond

In Black Diamond in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Black Diamond, you can refer to this Hourly UV Index in Black Diamond.

Maximum UV Index Levels in Black Diamond for April

The chart shows the monthly maximum UV Index (UVI) for Black Diamond 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 Diamond typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235699987532
Data source: Black Diamond 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 Diamond Compares to Other Months

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

This table compares monthly weather conditions in Black Diamond, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)206 mm (8.1 inches)86%low
February Weather3°C (37°F)246 mm (9.7 inches)86%moderate
March Weather5°C (42°F)160 mm (6.3 inches)87%moderate
April Weather8°C (47°F)142 mm (5.6 inches)84%high
May Weather12°C (54°F)84 mm (3.3 inches)81%very high
June Weather15°C (59°F)75 mm (2.9 inches)82%very high
July Weather17°C (64°F)21 mm (0.8 inches)79%very high
August Weather18°C (64°F)21 mm (0.8 inches)63%very high
September Weather15°C (59°F)105 mm (4.1 inches)62%high
October Weather9°C (48°F)197 mm (7.7 inches)83%moderate
November Weather6°C (43°F)223 mm (8.8 inches)89%moderate
December Weather4°C (39°F)244 mm (9.6 inches)88%low

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