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September Weather in Bryan, United States

Last updated: June 24, 2025

In Bryan, United States during September, the average temperature is a comfortable 20°C (68°F). You can expect a minimum of 3°C (38°F) and a maximum of 34°C (93°F), creating a pleasant range for outdoor activities. This month sees about 55 mm (2.2 in) of precipitation spread over 9 days, contributing to an average humidity of 78%. Stay prepared for a mix of warm days and occasional rain!

September Temperature in Bryan

In September in Bryan, the average temperature is 20°C (68°F). Maximums can reach 34°C (93°F), and minimums can be as low as 3°C (38°F). Be prepared for a range of weather conditions during your travels!

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

The chart illustrates September temperature patterns in Bryan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bryan, September typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec282939496171757367554034
Data source: Temperature data for Bryan 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 Bryan

In Bryan in September, the precipitation amount is 55 mm (2.2 in) over a span of 9 days.

September Precipitation Trends in Bryan

The chart displays monthly precipitation patterns in Bryan, 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 Bryan, September typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec697192961371141089455958057
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bryan

In Bryan in September humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.

September Average Humidity in Bryan

This chart illustrates the average monthly humidity levels in Bryan, 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 Bryan is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bryan

In Bryan 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 Bryan.

Maximum UV Index Levels in Bryan for September

The chart shows the monthly maximum UV Index (UVI) for Bryan 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 Bryan typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35699101098642
Data source: Bryan 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 Bryan Compares to Other Months

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

This table compares monthly weather conditions in Bryan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)69 mm (2.7 inches)88%moderate
February Weather-1°C (30°F)71 mm (2.8 inches)87%moderate
March Weather4°C (40°F)92 mm (3.6 inches)87%high
April Weather9°C (49°F)96 mm (3.8 inches)87%very high
May Weather16°C (62°F)137 mm (5.4 inches)81%very high
June Weather22°C (72°F)114 mm (4.5 inches)82%very high
July Weather24°C (76°F)108 mm (4.2 inches)81%very high
August Weather23°C (73°F)94 mm (3.7 inches)78%very high
September Weather20°C (68°F)55 mm (2.2 inches)78%very high
October Weather13°C (56°F)95 mm (3.7 inches)82%high
November Weather5°C (41°F)80 mm (3.2 inches)89%moderate
December Weather1°C (34°F)57 mm (2.3 inches)86%low

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