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September Weather in Trinity, United States

Last updated: June 24, 2025

In September, the average temperature in Trinity, United States is a warm 27°C (80°F), with minimums dipping to 11°C (52°F) and peaks soaring to 39°C (102°F). Expect about 108 mm (4.3 in) of precipitation spread over 11 days, accompanied by an average humidity of 69%. Whether you’re planning outdoor activities or seeking shelter from the rain, be prepared for a varied climate!

September Temperature in Trinity

In September in Trinity, the average temperature is 27°C (80°F). Maximums can reach 39°C (102°F), and minimums can be as low as 11°C (52°F). Be prepared for a warm climate with possible extremes, so pack accordingly for both hot days and cooler nights.

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

The chart illustrates September temperature patterns in Trinity, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trinity, September typically has an average temperature of 27°C (80°F), with highs reaching up to 39°C (102°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec525464687682858580716055
Data source: Temperature data for Trinity 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 Trinity

In Trinity in September, the precipitation amount is 108 mm (4.3 in) over the course of 11 days.

September Precipitation Trends in Trinity

The chart displays monthly precipitation patterns in Trinity, 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 Trinity, September typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec89110861221941187213710810281116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trinity

In Trinity in September, humidity is 69%. With an average temperature of 27°C (80°F), this humidity feels like a warm embrace that can leave you feeling sticky and lethargic, making it essential to stay hydrated and take frequent breaks while exploring.

September Average Humidity in Trinity

This chart illustrates the average monthly humidity levels in Trinity, 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 Trinity is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trinity

In Trinity 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 Trinity.

Maximum UV Index Levels in Trinity for September

The chart shows the monthly maximum UV Index (UVI) for Trinity 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 Trinity typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec588111111121110864
Data source: Trinity 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 Trinity Compares to Other Months

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

This table compares monthly weather conditions in Trinity, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)89 mm (3.5 inches)79%moderate
February Weather12°C (54°F)110 mm (4.3 inches)80%very high
March Weather18°C (64°F)86 mm (3.4 inches)78%very high
April Weather20°C (68°F)122 mm (4.8 inches)79%extreme
May Weather24°C (76°F)194 mm (7.6 inches)81%extreme
June Weather28°C (82°F)118 mm (4.6 inches)77%extreme
July Weather29°C (85°F)72 mm (2.8 inches)71%extreme
August Weather29°C (85°F)137 mm (5.4 inches)67%extreme
September Weather27°C (80°F)108 mm (4.3 inches)69%very high
October Weather22°C (71°F)102 mm (4.0 inches)73%very high
November Weather15°C (60°F)81 mm (3.2 inches)82%high
December Weather13°C (55°F)116 mm (4.6 inches)87%moderate

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