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September Weather in Tionesta, United States

Last updated: June 24, 2025

In September, the average temperature in Tionesta, United States is a pleasant 18°C (64°F), with a minimum dropping to 2°C (36°F) and a warm maximum reaching 31°C (89°F). Expect about 114 mm (4.5 in) of precipitation over 10 days, contributing to an average humidity level of 67%. Whether you're exploring or unwinding, this weather sets the perfect backdrop for your adventures!

September Temperature in Tionesta

In September in Tionesta, the average temperature is 18°C (64°F). The maximum can reach 31°C (89°F) and the minimum can be as low as 2°C (36°F). This variability makes Tionesta an interesting destination for travelers seeking both mild and warm weather experiences.

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

The chart illustrates September temperature patterns in Tionesta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tionesta, September typically has an average temperature of 18°C (64°F), with highs reaching up to 31°C (89°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec273037475967716964543933
Data source: Temperature data for Tionesta 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 Tionesta

In Tionesta in September, the precipitation amount is 114 mm (4.5 in) over a period of 10 days.

September Precipitation Trends in Tionesta

The chart displays monthly precipitation patterns in Tionesta, 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 Tionesta, September typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec100112107133149146143109114130106105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tionesta

In Tionesta in September humidity is 67%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel quite comfortable but slightly sticky, encouraging lightweight clothing and the occasional refreshing break in the shade.

September Average Humidity in Tionesta

This chart illustrates the average monthly humidity levels in Tionesta, 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 Tionesta 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 Tionesta

In Tionesta 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 Tionesta.

Maximum UV Index Levels in Tionesta for September

The chart shows the monthly maximum UV Index (UVI) for Tionesta 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 Tionesta typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Tionesta 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 Tionesta Compares to Other Months

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

This table compares monthly weather conditions in Tionesta, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)100 mm (3.9 inches)89%moderate
February Weather-1°C (30°F)112 mm (4.4 inches)90%moderate
March Weather3°C (37°F)107 mm (4.2 inches)89%high
April Weather8°C (47°F)133 mm (5.2 inches)88%very high
May Weather15°C (59°F)149 mm (5.9 inches)80%very high
June Weather19°C (67°F)146 mm (5.7 inches)79%very high
July Weather22°C (72°F)143 mm (5.6 inches)74%very high
August Weather21°C (70°F)109 mm (4.3 inches)64%very high
September Weather18°C (64°F)114 mm (4.5 inches)67%very high
October Weather12°C (54°F)130 mm (5.1 inches)81%high
November Weather4°C (39°F)106 mm (4.2 inches)89%moderate
December Weather0°C (33°F)105 mm (4.1 inches)88%low

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