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September Weather in Palmyra, United States

Last updated: June 24, 2025

In Palmyra, United States, the average temperature in September is a pleasant 21°C (71°F). However, you can expect a range from a cool 6°C (43°F) to a warm 37°C (98°F). During this time, precipitation averages 84 mm (3.3 in) over 8 days, with an average humidity of 75%. So, be prepared for both sunny and rainy moments!

September Temperature in Palmyra

In September, in Palmyra, the average temperature is 21°C (71°F). Maximum temperatures can reach up to 37°C (98°F), while the minimum can drop as low as 6°C (43°F). It's advisable to pack accordingly to enjoy comfortable outings throughout the day and night.

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

The chart illustrates September temperature patterns in Palmyra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Palmyra, September typically has an average temperature of 21°C (71°F), with highs reaching up to 37°C (98°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec272742516477797570544133
Data source: Temperature data for Palmyra 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 Palmyra

In Palmyra in September, the precipitation amount is 84 mm (3.3 in) spread over 8 days.

September Precipitation Trends in Palmyra

The chart displays monthly precipitation patterns in Palmyra, 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 Palmyra, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec322994491371079289841262735
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Palmyra

In Palmyra in September, humidity is 75%. With an average temperature of 21°C (71°F), this humidity feels like a warm blanket wrapping around you, making travel slightly uncomfortable but offering a lush, vibrant atmosphere that invites exploration at a leisurely pace.

September Average Humidity in Palmyra

This chart illustrates the average monthly humidity levels in Palmyra, 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 Palmyra is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Palmyra

In Palmyra 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 Palmyra.

Maximum UV Index Levels in Palmyra for September

The chart shows the monthly maximum UV Index (UVI) for Palmyra 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 Palmyra typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Palmyra 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 Palmyra Compares to Other Months

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

This table compares monthly weather conditions in Palmyra, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)32 mm (1.3 inches)76%moderate
February Weather-3°C (27°F)28 mm (1.1 inches)80%moderate
March Weather6°C (43°F)94 mm (3.7 inches)73%high
April Weather11°C (52°F)49 mm (1.9 inches)74%very high
May Weather18°C (64°F)137 mm (5.4 inches)78%very high
June Weather25°C (77°F)107 mm (4.2 inches)82%very high
July Weather26°C (79°F)92 mm (3.6 inches)83%very high
August Weather24°C (76°F)89 mm (3.5 inches)80%very high
September Weather21°C (71°F)84 mm (3.3 inches)75%very high
October Weather12°C (54°F)126 mm (5.0 inches)75%high
November Weather5°C (42°F)27 mm (1.0 inches)82%moderate
December Weather0°C (33°F)35 mm (1.4 inches)83%moderate

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