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September Weather in Pearl River, United States

Last updated: June 24, 2025

In Pearl River, United States, the average temperature in September is a pleasant 25°C (78°F), perfect for outdoor adventures. However, be prepared for a wide temperature range, with minimums dipping to 11°C (51°F) and maximums soaring up to 38°C (100°F). Expect 95 mm (3.8 in) of precipitation over 9 days, contributing to an average humidity of 74% that keeps the air feeling fresh. Enjoy your stay!

September Temperature in Pearl River

In September in Pearl River, the average temperature is 25°C (78°F). Maximums can reach 38°C (100°F), and minimums can be as low as 11°C (51°F). This mild climate makes Pearl River an ideal destination for travelers looking to enjoy warm weather activities.

September Weather in Pearl River: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Pearl River, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pearl River, September typically has an average temperature of 25°C (78°F), with highs reaching up to 38°C (100°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec475360647378818077685451
Data source: Temperature data for Pearl 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.

September Precipitation in Pearl River

In Pearl River in September, the total precipitation amount is 95 mm (3.8 in) over the course of 9 days.

September Precipitation Trends in Pearl River

The chart displays monthly precipitation patterns in Pearl River, 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 Pearl River, September typically receives around 95 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1111731221681311581141409610471118
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Pearl River

In Pearl River in September humidity is 74%. With an average temperature of 25°C (78°F), this humidity feels like you're enveloped in a warm, thick blanket, making outdoor activities feel more strenuous and necessitating frequent breaks and hydration for comfortable travel.

September Average Humidity in Pearl River

This chart illustrates the average monthly humidity levels in Pearl River, 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 Pearl River is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Pearl River

In Pearl River in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Pearl River.

Maximum UV Index Levels in Pearl River for September

The chart shows the monthly maximum UV Index (UVI) for Pearl River 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 Pearl River typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
Data source: Pearl River 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 Pearl River Compares to Other Months

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

This table compares monthly weather conditions in Pearl River, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)111 mm (4.4 inches)85%moderate
February Weather11°C (53°F)173 mm (6.8 inches)84%high
March Weather15°C (60°F)122 mm (4.8 inches)82%very high
April Weather18°C (64°F)168 mm (6.6 inches)82%very high
May Weather23°C (73°F)131 mm (5.2 inches)82%extreme
June Weather26°C (79°F)158 mm (6.2 inches)79%extreme
July Weather27°C (81°F)114 mm (4.5 inches)82%extreme
August Weather27°C (80°F)140 mm (5.5 inches)77%extreme
September Weather25°C (78°F)95 mm (3.8 inches)74%very high
October Weather20°C (68°F)104 mm (4.1 inches)73%very high
November Weather12°C (54°F)70 mm (2.8 inches)85%high
December Weather11°C (51°F)118 mm (4.6 inches)88%moderate

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