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September Weather in Sylvester, United States

Last updated: June 24, 2025

In September, the average temperature in Sylvester, United States hovers around 26°C (80°F), offering a pleasant climate. Expect a minimum of 13°C (56°F) and a maximum soaring to 38°C (101°F). This month also brings 121 mm (4.8 in) of precipitation over about 11 days, resulting in an average humidity of 83%. Prepare for warmth, but don’t forget your umbrella!

September Temperature in Sylvester

In September in Sylvester, the average temperature is 26°C (80°F). Maximums can reach 38°C (101°F), and minimums can be as low as 13°C (56°F). Visitors should be prepared for warm weather, with the possibility of cooler evenings, making it an ideal time for both outdoor adventures and leisurely explorations.

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

The chart illustrates September temperature patterns in Sylvester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sylvester, September typically has an average temperature of 26°C (80°F), with highs reaching up to 38°C (101°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec525862677580828280725954
Data source: Temperature data for Sylvester 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 Sylvester

In Sylvester in September, the total precipitation amount is 121 mm (4.8 in), which occurs over the course of 11 days.

September Precipitation Trends in Sylvester

The chart displays monthly precipitation patterns in Sylvester, 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 Sylvester, September typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec821148197761091191091217955120
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sylvester

In Sylvester in September humidity is 83%. With an average temperature of 26°C (80°F), this humidity feels like a warm, enveloping blanket that can make traveling quite uncomfortable; you may find yourself needing frequent breaks for hydration and cool shade as the thick air clings to your skin.

September Average Humidity in Sylvester

This chart illustrates the average monthly humidity levels in Sylvester, 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 Sylvester is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sylvester

In Sylvester in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Sylvester.

Maximum UV Index Levels in Sylvester for September

The chart shows the monthly maximum UV Index (UVI) for Sylvester 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 Sylvester typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111111110864
Data source: Sylvester 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 Sylvester Compares to Other Months

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

This table compares monthly weather conditions in Sylvester, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)82 mm (3.2 inches)85%moderate
February Weather14°C (58°F)114 mm (4.5 inches)82%very high
March Weather17°C (62°F)81 mm (3.2 inches)80%very high
April Weather20°C (68°F)97 mm (3.8 inches)76%very high
May Weather24°C (76°F)76 mm (3.0 inches)73%extreme
June Weather27°C (81°F)109 mm (4.3 inches)74%extreme
July Weather28°C (83°F)119 mm (4.7 inches)80%extreme
August Weather28°C (82°F)109 mm (4.3 inches)79%extreme
September Weather26°C (80°F)121 mm (4.8 inches)83%very high
October Weather22°C (72°F)79 mm (3.1 inches)77%very high
November Weather15°C (59°F)55 mm (2.2 inches)84%high
December Weather12°C (54°F)120 mm (4.7 inches)88%moderate

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