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September Weather in Tyler, United States

Last updated: June 24, 2025

In September, the average temperature in Tyler, United States hovers around 17°C (63°F). Expect a range from a chilly 2°C (36°F) at night to a warm 32°C (89°F) during the day. Prepare for some rain, as the area experiences approximately 111 mm (4.4 in) of precipitation over 9 days. With an average humidity of 82%, be ready for a refreshing blend of warmth and moisture!

September Temperature in Tyler

In September, in Tyler, the average temperature is 17°C (63°F). Maximums can reach 32°C (89°F), and minimums can be as low as 2°C (36°F). Be prepared for a wide range of temperatures, making it a great time for diverse outdoor activities.

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

The chart illustrates September temperature patterns in Tyler, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tyler, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (89°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec161632425771736963463324
Data source: Temperature data for Tyler 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 Tyler

In Tyler in September, the precipitation amount is 111 mm (4.4 in) over the course of 9 days.

September Precipitation Trends in Tyler

The chart displays monthly precipitation patterns in Tyler, 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 Tyler, September typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec24235978117112111121111842939
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tyler

In Tyler in September, humidity is 82%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket wrapping around you—comfortable yet heavy, making outdoor activities more taxing and requiring frequent breaks for hydration.

September Average Humidity in Tyler

This chart illustrates the average monthly humidity levels in Tyler, 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 Tyler is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%81%82%76%81%82%83%82%82%87%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tyler

In Tyler in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Tyler.

Maximum UV Index Levels in Tyler for September

The chart shows the monthly maximum UV Index (UVI) for Tyler 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 Tyler typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098532
Data source: Tyler 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 Tyler Compares to Other Months

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

This table compares monthly weather conditions in Tyler, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)24 mm (0.9 inches)85%moderate
February Weather-9°C (16°F)23 mm (0.9 inches)89%moderate
March Weather0°C (32°F)59 mm (2.3 inches)81%high
April Weather5°C (42°F)78 mm (3.1 inches)82%very high
May Weather14°C (57°F)117 mm (4.6 inches)76%very high
June Weather21°C (71°F)112 mm (4.4 inches)81%very high
July Weather23°C (73°F)111 mm (4.4 inches)82%very high
August Weather21°C (70°F)121 mm (4.8 inches)83%very high
September Weather17°C (63°F)111 mm (4.4 inches)82%very high
October Weather8°C (46°F)84 mm (3.3 inches)82%moderate
November Weather0°C (33°F)29 mm (1.2 inches)87%moderate
December Weather-4°C (24°F)39 mm (1.5 inches)84%low

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