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May Weather in Black Diamond, United States

Last updated: June 24, 2025

In Black Diamond, United States, the average temperature in May hovers around 25°C (78°F), with a minimum of 12°C (54°F) and a maximum soaring to 36°C (97°F). Expect about 109 mm (4.3 in) of precipitation spread over 9 days, accompanied by an average humidity of 75%. Stay prepared for the variable climate!

May Temperature in Black Diamond

In May in Black Diamond, the average temperature is 25°C (78°F). Maximum temperatures can reach 36°C (97°F), while minimums can dip as low as 12°C (54°F). This weather makes Black Diamond a perfect destination for travelers seeking warm days and cooler evenings.

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

The chart illustrates May 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, May typically has an average temperature of 25°C (78°F), with highs reaching up to 36°C (97°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec586467727781818281776661
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.

May Precipitation in Black Diamond

In Black Diamond in May, the total precipitation amount is 109 mm (4.3 in) spread over 9 days.

May Precipitation Trends in Black Diamond

The chart displays monthly precipitation patterns in Black Diamond, 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 Diamond, May typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec47602592109173217209149824786
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Black Diamond

In Black Diamond in May, humidity is 75%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket enveloping you, making travel feel sticky and heavy, but also vibrant and alive, as the air is saturated with the scents of the surroundings and the energy of the environment.

May Average Humidity in Black Diamond

This chart illustrates the average monthly humidity levels in Black Diamond, 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 Diamond is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%78%77%75%76%79%78%83%81%83%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Black Diamond

In Black Diamond in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Black Diamond.

Maximum UV Index Levels in Black Diamond for May

The chart shows the monthly maximum UV Index (UVI) for Black Diamond 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 Diamond typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112111110975
Data source: Black Diamond 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 Diamond Compares to Other Months

Weather in Black Diamond varies notably across the year, with each month offering distinct climate conditions. This page compares May’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 May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)47 mm (1.9 inches)83%moderate
February Weather18°C (65°F)60 mm (2.4 inches)82%very high
March Weather19°C (67°F)25 mm (1.0 inches)78%very high
April Weather22°C (72°F)92 mm (3.6 inches)77%extreme
May Weather25°C (78°F)109 mm (4.3 inches)75%extreme
June Weather27°C (81°F)172 mm (6.8 inches)76%extreme
July Weather27°C (82°F)217 mm (8.5 inches)79%extreme
August Weather28°C (82°F)209 mm (8.2 inches)78%extreme
September Weather27°C (81°F)149 mm (5.8 inches)83%very high
October Weather25°C (77°F)82 mm (3.2 inches)81%very high
November Weather19°C (67°F)47 mm (1.8 inches)83%high
December Weather16°C (62°F)86 mm (3.4 inches)86%moderate

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