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September Weather in Barlow, United States

Last updated: June 24, 2025

In September, the average temperature in Barlow, United States hovers around 23°C (74°F). However, temperatures can fluctuate, with a minimum of 10°C (49°F) and a high of 36°C (97°F). Expect about 92 mm (3.6 in) of precipitation over 7 days, and a relative humidity of 75% to make for a truly tropical atmosphere.

September Temperature in Barlow

In September in Barlow, the average temperature is 23°C (74°F). Maximums can reach 36°C (97°F), while minimums can drop to as low as 10°C (49°F). This diverse temperature range makes it an ideal month for exploring outdoor activities, although travelers should be prepared for both warm and cooler conditions.

September Weather in Barlow: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Barlow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barlow, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec384151587077817874624743
Data source: Temperature data for Barlow 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 Barlow

In Barlow in September, the precipitation amount is 92 mm (3.6 in) over the course of 7 days.

September Precipitation Trends in Barlow

The chart displays monthly precipitation patterns in Barlow, 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 Barlow, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec108144163143154115105979212410198
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Barlow

In Barlow in September, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.

September Average Humidity in Barlow

This chart illustrates the average monthly humidity levels in Barlow, 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 Barlow is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Barlow

In Barlow 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 Barlow.

Maximum UV Index Levels in Barlow for September

The chart shows the monthly maximum UV Index (UVI) for Barlow 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 Barlow typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710111110109753
Data source: Barlow 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 Barlow Compares to Other Months

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

This table compares monthly weather conditions in Barlow, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)108 mm (4.2 inches)86%moderate
February Weather5°C (41°F)144 mm (5.7 inches)84%high
March Weather10°C (51°F)163 mm (6.4 inches)84%high
April Weather15°C (58°F)143 mm (5.6 inches)80%very high
May Weather21°C (70°F)154 mm (6.1 inches)82%extreme
June Weather25°C (78°F)115 mm (4.5 inches)83%extreme
July Weather27°C (81°F)105 mm (4.1 inches)79%very high
August Weather26°C (78°F)97 mm (3.8 inches)76%very high
September Weather23°C (74°F)92 mm (3.6 inches)75%very high
October Weather17°C (62°F)124 mm (4.9 inches)74%high
November Weather8°C (48°F)101 mm (4.0 inches)85%moderate
December Weather6°C (44°F)98 mm (3.9 inches)88%moderate

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