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September Weather in Black Rock, United States

Last updated: June 24, 2025

In September, the average temperature in Black Rock, United States is a pleasant 19°C (66°F). However, you might experience a range from a cool 2°C (36°F) to a warm 33°C (92°F). Expect 29 mm (1.1 in) of rain spread over about 4 days, with an average humidity of 62%. Prepare accordingly to enjoy the diverse climate!

September Temperature in Black Rock

In September in Black Rock, the average temperature is 19°C (66°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 2°C (36°F). This diverse climate makes Black Rock an ideal destination for travelers looking to experience a range of temperatures and activities.

September Weather in Black Rock: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Black Rock, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Black Rock, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec303443526072737266534333
Data source: Temperature data for Black Rock 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.

September Precipitation in Black Rock

In Black Rock in September, the precipitation amount is 29 mm (1.1 in) over a span of 4 days.

September Precipitation Trends in Black Rock

The chart displays monthly precipitation patterns in Black Rock, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Black Rock, September typically receives around 29 mm (1.1 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec383737221610672529261832
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Black Rock

In Black Rock in September, humidity is 62%. With an average temperature of 19°C (66°F), this humidity feels like a balmy embrace, making travel pleasant, yet slightly muggy, urging you to stay hydrated and seek shade during midday excursions.

September Average Humidity in Black Rock

This chart illustrates the average monthly humidity levels in Black Rock, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Black Rock is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%83%71%61%48%36%37%46%62%74%82%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Black Rock

In Black Rock in September, 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 Rock.

Maximum UV Index Levels in Black Rock for September

The chart shows the monthly maximum UV Index (UVI) for Black Rock in September, 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 September, the maximum UV index in Black Rock typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111213131211865
Data source: Black Rock September 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 September Weather in Black Rock Compares to Other Months

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

This table compares monthly weather conditions in Black Rock, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)38 mm (1.5 inches)81%moderate
February Weather1°C (35°F)37 mm (1.5 inches)83%high
March Weather6°C (43°F)37 mm (1.5 inches)71%very high
April Weather11°C (52°F)22 mm (0.9 inches)61%extreme
May Weather16°C (60°F)16 mm (0.6 inches)48%extreme
June Weather22°C (72°F)10 mm (0.4 inches)36%extreme
July Weather23°C (74°F)67 mm (2.6 inches)37%extreme
August Weather22°C (72°F)25 mm (1.0 inches)46%extreme
September Weather19°C (66°F)29 mm (1.1 inches)62%extreme
October Weather12°C (54°F)26 mm (1.0 inches)74%very high
November Weather6°C (44°F)18 mm (0.7 inches)82%high
December Weather0°C (33°F)32 mm (1.3 inches)82%moderate

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