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September Weather in Terrytown, United States

Last updated: June 24, 2025

In September, the average temperature in Terrytown, United States is a comfortable 19°C (67°F). However, be prepared for a wide range, as temperatures can dip to a chilling -1°C (31°F) or soar to a sweltering 39°C (102°F). You'll encounter around 23 mm (0.9 in) of precipitation spread over just 4 days, while average humidity sits at a muggy 75%.

September Temperature in Terrytown

In September in Terrytown, the average temperature is 19°C (67°F). Maximum temperatures can reach 39°C (102°F) and minimums can drop as low as -1°C (31°F). Be sure to pack both light clothing and warmer layers for your travels.

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

The chart illustrates September temperature patterns in Terrytown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Terrytown, September typically has an average temperature of 19°C (67°F), with highs reaching up to 39°C (102°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec323041475670767366484234
Data source: Temperature data for Terrytown 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 Terrytown

In Terrytown in September, the total precipitation amount is 23 mm (0.9 in) over a span of 4 days.

September Precipitation Trends in Terrytown

The chart displays monthly precipitation patterns in Terrytown, 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 Terrytown, September typically receives around 23 mm (0.9 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec1422625010645412823332319
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Terrytown

In Terrytown in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.

September Average Humidity in Terrytown

This chart illustrates the average monthly humidity levels in Terrytown, 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 Terrytown is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%76%62%60%74%82%82%84%75%73%74%77%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Terrytown

In Terrytown in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Terrytown.

Maximum UV Index Levels in Terrytown for September

The chart shows the monthly maximum UV Index (UVI) for Terrytown 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 Terrytown typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Terrytown 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 Terrytown Compares to Other Months

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

This table compares monthly weather conditions in Terrytown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)14 mm (0.5 inches)72%moderate
February Weather-1°C (30°F)22 mm (0.9 inches)76%moderate
March Weather5°C (41°F)62 mm (2.4 inches)61%high
April Weather8°C (47°F)49 mm (1.9 inches)60%very high
May Weather14°C (57°F)106 mm (4.2 inches)74%very high
June Weather21°C (71°F)45 mm (1.8 inches)82%extreme
July Weather25°C (77°F)41 mm (1.6 inches)82%extreme
August Weather23°C (74°F)28 mm (1.1 inches)84%very high
September Weather19°C (67°F)23 mm (0.9 inches)75%very high
October Weather9°C (49°F)33 mm (1.3 inches)73%high
November Weather5°C (42°F)23 mm (0.9 inches)74%moderate
December Weather1°C (35°F)19 mm (0.7 inches)77%moderate

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