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September Weather in Falfurrias, United States

Last updated: June 24, 2025

In Falfurrias, United States, the average temperature in September is a warm 28°C (83°F). Expect the mercury to fluctuate, with minimum temperatures dipping to 16°C (61°F) and soaring to a blazing 40°C (104°F). During this month, you might encounter 102 mm (4.0 in) of precipitation spread over approximately 12 days, accompanied by an average humidity level of 73%.

September Temperature in Falfurrias

In September in Falfurrias, the average temperature is 28°C (83°F). Maximums can reach 40°C (104°F), while minimums can drop to as low as 16°C (61°F). Travelers should prepare for warm days and cooler evenings, making layering an essential part of their packing.

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

The chart illustrates September temperature patterns in Falfurrias, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Falfurrias, September typically has an average temperature of 28°C (83°F), with highs reaching up to 40°C (104°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec596371768284868783766762
Data source: Temperature data for Falfurrias 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 Falfurrias

In Falfurrias in September, the total precipitation amount is 102 mm (4.0 in), occurring over a span of 12 days.

September Precipitation Trends in Falfurrias

The chart displays monthly precipitation patterns in Falfurrias, 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 Falfurrias, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec24194347109908741102393729
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Falfurrias

In Falfurrias in September, humidity is 73%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping your skin, making travel feel heavy and stifling, often requiring frequent breaks in shaded or air-conditioned areas to stay comfortable.

September Average Humidity in Falfurrias

This chart illustrates the average monthly humidity levels in Falfurrias, 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 Falfurrias is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%76%77%80%73%66%65%73%76%80%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Falfurrias

In Falfurrias 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 Falfurrias.

Maximum UV Index Levels in Falfurrias for September

The chart shows the monthly maximum UV Index (UVI) for Falfurrias 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 Falfurrias typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810111212121211975
Data source: Falfurrias 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 Falfurrias Compares to Other Months

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

This table compares monthly weather conditions in Falfurrias, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)24 mm (1.0 inches)83%high
February Weather17°C (63°F)19 mm (0.8 inches)79%very high
March Weather21°C (71°F)43 mm (1.7 inches)76%very high
April Weather24°C (76°F)47 mm (1.8 inches)77%extreme
May Weather28°C (82°F)108 mm (4.3 inches)80%extreme
June Weather29°C (85°F)90 mm (3.6 inches)73%extreme
July Weather30°C (86°F)87 mm (3.4 inches)66%extreme
August Weather31°C (87°F)41 mm (1.6 inches)65%extreme
September Weather28°C (83°F)102 mm (4.0 inches)73%extreme
October Weather25°C (77°F)39 mm (1.5 inches)76%very high
November Weather19°C (67°F)37 mm (1.5 inches)80%high
December Weather17°C (62°F)29 mm (1.1 inches)86%moderate

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