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September Weather in Porter Heights, United States

Last updated: June 24, 2025

In Porter Heights, United States, the average temperature in September hovers around 26°C (79°F), with a comfortable range from a minimum of 12°C (54°F) to a sizzling maximum of 37°C (99°F). Expect about 174 mm (6.9 in) of precipitation spread over 15 days, coupled with an average humidity level of 69%, making it a vibrant, albeit sometimes wet, month.

September Temperature in Porter Heights

In September in Porter Heights, the average temperature is 26°C (79°F). Maximums can reach 37°C (99°F), and minimums can be as low as 12°C (54°F). This makes Porter Heights an ideal destination for travelers seeking warm weather while still having the option for cooler evenings.

September Weather in Porter Heights: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Porter Heights, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porter Heights, September typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec535664687681838379716157
Data source: Temperature data for Porter Heights 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 Porter Heights

In Porter Heights in September, the precipitation amount is 174 mm (6.9 in) over a period of 15 days.

September Precipitation Trends in Porter Heights

The chart displays monthly precipitation patterns in Porter Heights, 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 Porter Heights, September typically receives around 174 mm (6.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec98110999921116212617617411472116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Porter Heights

In Porter Heights in September humidity is 69%. With an average temperature of 26°C (79°F), this humidity feels like walking through a warm, heavy blanket, making travel feel more stifling and sweat-inducing than refreshing.

September Average Humidity in Porter Heights

This chart illustrates the average monthly humidity levels in Porter Heights, 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 Porter Heights 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 Porter Heights

In Porter Heights 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 Porter Heights.

Maximum UV Index Levels in Porter Heights for September

The chart shows the monthly maximum UV Index (UVI) for Porter Heights 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 Porter Heights typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111121110865
Data source: Porter Heights 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 Porter Heights Compares to Other Months

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

This table compares monthly weather conditions in Porter Heights, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (53°F)98 mm (3.8 inches)79%moderate
February Weather14°C (57°F)110 mm (4.3 inches)80%very high
March Weather18°C (65°F)99 mm (3.9 inches)78%very high
April Weather20°C (69°F)99 mm (3.9 inches)79%very high
May Weather25°C (76°F)211 mm (8.3 inches)81%extreme
June Weather27°C (82°F)162 mm (6.4 inches)77%extreme
July Weather28°C (83°F)126 mm (5.0 inches)71%extreme
August Weather28°C (83°F)176 mm (6.9 inches)67%extreme
September Weather26°C (79°F)174 mm (6.9 inches)69%very high
October Weather22°C (71°F)114 mm (4.5 inches)73%very high
November Weather16°C (61°F)72 mm (2.8 inches)82%high
December Weather14°C (57°F)116 mm (4.6 inches)87%moderate

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