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September Weather in Palmyra, United States

Last updated: June 24, 2025

In September, the average temperature in Palmyra, United States is a comfortable 18°C (65°F), with lows dipping to 3°C (37°F) and highs reaching up to 33°C (92°F). Expect around 79 mm (3.1 in) of precipitation spread over 9 days, paired with an average humidity of 78%. Whether you're planning outdoor activities or indoor relaxation, this month's climate offers a mix of experiences!

September Temperature in Palmyra

In September in Palmyra, the average temperature is 18°C (65°F), with maximums that can reach 33°C (92°F) and minimums that can drop to as low as 3°C (37°F). Overall, travelers should be prepared for a range of temperatures, ensuring they pack both warm clothing for the cooler evenings and lighter attire for the hotter days.

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 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec272935465868737164544032
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 79 mm (3.1 in) spread over 9 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 79 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec80817611911991159110791458690
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 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24681010997532
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)80 mm (3.1 inches)90%low
February Weather-2°C (29°F)81 mm (3.2 inches)90%moderate
March Weather2°C (35°F)76 mm (3.0 inches)87%high
April Weather8°C (46°F)119 mm (4.7 inches)88%very high
May Weather15°C (59°F)119 mm (4.7 inches)82%very high
June Weather20°C (68°F)91 mm (3.6 inches)79%very high
July Weather23°C (73°F)159 mm (6.3 inches)78%very high
August Weather22°C (71°F)110 mm (4.3 inches)76%very high
September Weather18°C (65°F)79 mm (3.1 inches)78%high
October Weather12°C (54°F)145 mm (5.7 inches)84%moderate
November Weather4°C (40°F)86 mm (3.4 inches)89%moderate
December Weather0°C (32°F)90 mm (3.6 inches)86%low

Compare Palmyra's Climate with Cities Worldwide