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September Weather in Portville, United States

Last updated: June 24, 2025

In September, the average temperature in Portville, United States is a comfortable 16°C (62°F). However, temperatures can vary significantly, with lows dipping to 0°C (32°F) and highs reaching up to 31°C (88°F). Be prepared for approximately 85 mm (3.3 in) of precipitation spread over 10 days, and expect an average humidity of 67% for a damp yet pleasant experience.

September Temperature in Portville

In September in Portville, the average temperature is 16°C (62°F). Maximums can reach 31°C (88°F), while minimums can drop as low as 0°C (32°F). Be prepared for a variety of weather conditions when traveling during this time.

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

The chart illustrates September temperature patterns in Portville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portville, September typically has an average temperature of 16°C (62°F), with highs reaching up to 31°C (88°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec242734455765706862513730
Data source: Temperature data for Portville 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 Portville

In Portville in September, the precipitation amount is 85 mm (3.3 in) over the course of 10 days.

September Precipitation Trends in Portville

The chart displays monthly precipitation patterns in Portville, 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 Portville, September typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec82958611412510711384851238989
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Portville

In Portville in September, humidity is 67%. With an average temperature of 16°C (62°F), this humidity feels like a warm, enveloping embrace, making outdoor explorations comfortable yet slightly damp, perfect for leisurely strolls and enjoying the vibrant local culture.

September Average Humidity in Portville

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

In Portville 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 Portville.

Maximum UV Index Levels in Portville for September

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

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

This table compares monthly weather conditions in Portville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)82 mm (3.2 inches)89%moderate
February Weather-3°C (27°F)95 mm (3.7 inches)90%moderate
March Weather1°C (34°F)86 mm (3.4 inches)89%high
April Weather7°C (45°F)114 mm (4.5 inches)88%very high
May Weather14°C (57°F)124 mm (4.9 inches)80%very high
June Weather18°C (65°F)107 mm (4.2 inches)79%very high
July Weather21°C (70°F)113 mm (4.5 inches)74%very high
August Weather20°C (68°F)84 mm (3.3 inches)64%very high
September Weather16°C (62°F)85 mm (3.3 inches)67%very high
October Weather11°C (52°F)123 mm (4.9 inches)81%high
November Weather3°C (37°F)89 mm (3.5 inches)89%moderate
December Weather-1°C (30°F)89 mm (3.5 inches)88%low

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