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September Weather in Clymer, United States

Last updated: June 24, 2025

In September, the average temperature in Clymer, United States is a pleasant 17°C (64°F). However, temperatures can vary significantly, ranging from a chilly 3°C (38°F) to a warm 31°C (88°F). Expect some rain, with an average precipitation of 94 mm (3.7 in) spread across 11 days. The air tends to be relatively humid, with an average humidity of 67%.

September Temperature in Clymer

In September in Clymer, the average temperature is 17°C (64°F). Maximums can reach 31°C (88°F) and minimums can be as low as 3°C (38°F). This range makes Clymer an ideal destination for travelers seeking a moderate climate for outdoor activities.

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

The chart illustrates September temperature patterns in Clymer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clymer, September typically has an average temperature of 17°C (64°F), with highs reaching up to 31°C (88°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec262835455866716963533832
Data source: Temperature data for Clymer 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 Clymer

In Clymer in September, the precipitation amount is 94 mm (3.7 in) over the course of 11 days.

September Precipitation Trends in Clymer

The chart displays monthly precipitation patterns in Clymer, 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 Clymer, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10811310813514115016012194138130123
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Clymer

In Clymer in September humidity is 67%. With an average temperature of 17°C (64°F), this humidity feels like a cozy embrace, perfect for leisurely strolls, but it may leave you slightly sticky if you're active, so staying hydrated is essential for a comfortable experience.

September Average Humidity in Clymer

This chart illustrates the average monthly humidity levels in Clymer, 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 Clymer is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Clymer

In Clymer 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 Clymer.

Maximum UV Index Levels in Clymer for September

The chart shows the monthly maximum UV Index (UVI) for Clymer 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 Clymer typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Clymer 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 Clymer Compares to Other Months

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

This table compares monthly weather conditions in Clymer, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)108 mm (4.2 inches)89%moderate
February Weather-2°C (29°F)113 mm (4.4 inches)90%moderate
March Weather2°C (35°F)108 mm (4.2 inches)89%high
April Weather7°C (46°F)134 mm (5.3 inches)88%very high
May Weather14°C (58°F)141 mm (5.6 inches)80%very high
June Weather19°C (67°F)150 mm (5.9 inches)79%very high
July Weather22°C (71°F)160 mm (6.3 inches)74%very high
August Weather20°C (69°F)121 mm (4.7 inches)64%very high
September Weather17°C (64°F)94 mm (3.7 inches)67%very high
October Weather12°C (53°F)138 mm (5.4 inches)81%high
November Weather3°C (39°F)130 mm (5.1 inches)89%moderate
December Weather0°C (32°F)123 mm (4.8 inches)88%low

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