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September Weather in Nelsonville, United States

Last updated: June 24, 2025

In September, the average temperature in Nelsonville, United States is a pleasant 21°C (70°F). However, temperatures can vary significantly, with a minimum of 5°C (42°F) and soaring to a maximum of 36°C (98°F). Prepare for somewhat humid days, as the average humidity is around 73%. Expect 106 mm (4.2 in) of precipitation over 8 days, so pack accordingly!

September Temperature in Nelsonville

In September in Nelsonville, the average temperature is 21°C (70°F). Maximums can reach 36°C (98°F) and minima can be as low as 5°C (42°F). This range makes it essential for travelers to pack appropriately to enjoy the diverse weather conditions.

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

The chart illustrates September temperature patterns in Nelsonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nelsonville, September typically has an average temperature of 21°C (70°F), with highs reaching up to 36°C (98°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec323644536472767469584338
Data source: Temperature data for Nelsonville 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 Nelsonville

In Nelsonville in September, the precipitation amount is 106 mm (4.2 in) over a span of 8 days.

September Precipitation Trends in Nelsonville

The chart displays monthly precipitation patterns in Nelsonville, 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 Nelsonville, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec8611912414013216013212210610590112
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nelsonville

In Nelsonville in September, humidity is 73%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace that can make outdoor activities feel sweltering, so it's essential to stay hydrated and take breaks in the shade while exploring.

September Average Humidity in Nelsonville

This chart illustrates the average monthly humidity levels in Nelsonville, 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 Nelsonville is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%87%82%84%82%73%74%81%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nelsonville

In Nelsonville 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 Nelsonville.

Maximum UV Index Levels in Nelsonville for September

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

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

This table compares monthly weather conditions in Nelsonville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)86 mm (3.4 inches)88%moderate
February Weather2°C (37°F)119 mm (4.7 inches)88%moderate
March Weather7°C (44°F)124 mm (4.9 inches)88%high
April Weather12°C (53°F)140 mm (5.5 inches)86%very high
May Weather18°C (64°F)132 mm (5.2 inches)82%very high
June Weather22°C (72°F)160 mm (6.3 inches)84%very high
July Weather24°C (76°F)132 mm (5.2 inches)82%very high
August Weather23°C (74°F)122 mm (4.8 inches)73%very high
September Weather21°C (70°F)106 mm (4.2 inches)73%very high
October Weather15°C (59°F)105 mm (4.2 inches)81%high
November Weather6°C (43°F)90 mm (3.6 inches)89%moderate
December Weather3°C (38°F)112 mm (4.4 inches)86%moderate

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