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September Weather in Tyler, United States

Last updated: June 24, 2025

In Tyler, United States, the average temperature in September is a warm 26°C (80°F). Expect a minimum of 11°C (52°F) and highs reaching up to 38°C (101°F). During this month, precipitation averages 88 mm (3.5 in) across 8 days, with an average humidity level of 65%. Prepare for a mix of warmth and occasional rain!

September Temperature in Tyler

In September in Tyler, the average temperature is 26°C (80°F), with maximums reaching 38°C (101°F) and minimums dipping as low as 11°C (52°F). Be prepared for warm days, but also bring layers for cooler evenings.

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 26°C (80°F), with highs reaching up to 38°C (101°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec495161657481848479695853
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 88 mm (3.5 in) over the course of 8 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 88 mm (3.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec10914712713215410783718810064118
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 65%. With an average temperature of 26°C (80°F), this humidity feels like a warm, sticky embrace, making travel less comfortable as you navigate the sights.

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 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
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 Weather9°C (49°F)109 mm (4.3 inches)80%moderate
February Weather11°C (51°F)147 mm (5.8 inches)79%high
March Weather16°C (61°F)127 mm (5.0 inches)78%very high
April Weather18°C (66°F)132 mm (5.2 inches)78%very high
May Weather23°C (74°F)154 mm (6.1 inches)81%extreme
June Weather27°C (81°F)107 mm (4.2 inches)78%extreme
July Weather29°C (84°F)83 mm (3.3 inches)73%extreme
August Weather29°C (85°F)71 mm (2.8 inches)66%extreme
September Weather26°C (80°F)88 mm (3.5 inches)65%very high
October Weather21°C (69°F)100 mm (3.9 inches)72%very high
November Weather14°C (58°F)64 mm (2.5 inches)82%high
December Weather12°C (53°F)118 mm (4.7 inches)87%moderate

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