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September Weather in Troy, United States

Last updated: June 24, 2025

In September, the average temperature in Troy, United States is a pleasant 24°C (75°F). Expect a comfortable range with minimums dipping to 9°C (49°F) and maximums soaring up to 36°C (97°F). The month also sees 149 mm (5.9 in) of precipitation spread over about 8 days, contributing to an average humidity of 75%. Whether you're exploring or relaxing, be prepared for a mix of sun and occasional rain!

September Temperature in Troy

In September in Troy, the average temperature is 24°C (75°F). Maximums can reach 36°C (97°F), and minimums can be as low as 9°C (49°F). This makes Troy an ideal destination for travelers seeking pleasant weather with a range of temperatures suitable for various activities.

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

The chart illustrates September temperature patterns in Troy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Troy, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (97°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec455054637177817975665248
Data source: Temperature data for Troy 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 Troy

In Troy in September, the total precipitation amount is 149 mm (5.9 in), occurring over the span of 8 days.

September Precipitation Trends in Troy

The chart displays monthly precipitation patterns in Troy, 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 Troy, September typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec981157899112931001171497785115
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Troy

In Troy in September humidity is 75%. With average temperature 24°C (75°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities feel especially stifling and leaving you yearning for cool breezes and refreshingly cold drinks.

September Average Humidity in Troy

This chart illustrates the average monthly humidity levels in Troy, 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 Troy is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Troy

In Troy 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 Troy.

Maximum UV Index Levels in Troy for September

The chart shows the monthly maximum UV Index (UVI) for Troy 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 Troy typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109853
Data source: Troy 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 Troy Compares to Other Months

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

This table compares monthly weather conditions in Troy, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)98 mm (3.8 inches)86%moderate
February Weather10°C (50°F)115 mm (4.5 inches)85%high
March Weather12°C (55°F)78 mm (3.1 inches)84%very high
April Weather17°C (63°F)98 mm (3.9 inches)82%very high
May Weather22°C (71°F)112 mm (4.4 inches)83%very high
June Weather25°C (77°F)93 mm (3.7 inches)82%extreme
July Weather27°C (81°F)100 mm (3.9 inches)80%extreme
August Weather26°C (79°F)117 mm (4.6 inches)74%very high
September Weather24°C (75°F)149 mm (5.9 inches)75%very high
October Weather19°C (66°F)77 mm (3.0 inches)79%very high
November Weather11°C (52°F)84 mm (3.3 inches)87%moderate
December Weather9°C (48°F)115 mm (4.5 inches)87%moderate

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