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September Weather in White Rock, United States

Last updated: June 24, 2025

In September, the average temperature in White Rock, United States is a pleasant 17°C (64°F). Expect minimums of around 2°C (35°F) and occasional highs reaching 33°C (91°F). During this month, you can anticipate about 45 mm (1.8 in) of precipitation spread over 6 days, contributing to an average humidity of 72%. Enjoy the variety that this season brings!

September Temperature in White Rock

In September in White Rock, the average temperature is 17°C (64°F). Maximums can reach 33°C (91°F) and minimums can be as low as 2°C (35°F). This makes White Rock a great destination for travelers seeking comfortable weather and a variety of outdoor activities.

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

The chart illustrates September temperature patterns in White Rock, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In White Rock, September typically has an average temperature of 17°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec293142505969716963504032
Data source: Temperature data for White 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 White Rock

In White Rock in September, the precipitation amount is 45 mm (1.8 in) over the course of 6 days.

September Precipitation Trends in White Rock

The chart displays monthly precipitation patterns in White 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 White Rock, September typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec292934302529706645563121
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in White Rock

In White Rock in September humidity is 72%. With an average temperature of 17°C (64°F), this humidity feels like a warm, sticky embrace, making travel comfortable yet slightly muggy, especially during midday when the warmth is more pronounced.

September Average Humidity in White Rock

This chart illustrates the average monthly humidity levels in White 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 White Rock is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%79%66%60%57%55%57%65%72%78%81%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in White Rock

In White 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 White Rock.

Maximum UV Index Levels in White Rock for September

The chart shows the monthly maximum UV Index (UVI) for White 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 White Rock typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111213131211854
Data source: White 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 White Rock Compares to Other Months

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

This table compares monthly weather conditions in White Rock, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)29 mm (1.1 inches)78%moderate
February Weather0°C (32°F)29 mm (1.2 inches)79%high
March Weather5°C (42°F)34 mm (1.3 inches)66%very high
April Weather10°C (50°F)30 mm (1.2 inches)60%extreme
May Weather15°C (59°F)25 mm (1.0 inches)57%extreme
June Weather20°C (69°F)29 mm (1.1 inches)55%extreme
July Weather22°C (71°F)70 mm (2.8 inches)56%extreme
August Weather20°C (69°F)66 mm (2.6 inches)65%extreme
September Weather17°C (64°F)45 mm (1.8 inches)72%extreme
October Weather10°C (51°F)56 mm (2.2 inches)78%very high
November Weather5°C (41°F)31 mm (1.2 inches)81%moderate
December Weather0°C (32°F)21 mm (0.8 inches)79%moderate

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