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September Weather in Cooperstown, United States

Last updated: June 24, 2025

The average temperature in Cooperstown, United States during September hovers around 17°C (64°F). Expect a range from a minimum of 3°C (37°F) to a maximum of 33°C (91°F). Rainfall averages 67 mm (2.6 in) spread over 11 days, while humidity levels sit at a comfortable 78%. Prepare for a month of varied weather!

September Temperature in Cooperstown

In September in Cooperstown, the average temperature is 17°C (64°F). Maximums can reach 33°C (91°F), and minimums can be as low as 3°C (37°F). This diverse temperature range makes Cooperstown an ideal destination for travelers looking for a variety of outdoor experiences.

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

The chart illustrates September temperature patterns in Cooperstown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cooperstown, September typically has an average temperature of 17°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec222234435567727063503628
Data source: Temperature data for Cooperstown 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 Cooperstown

In Cooperstown in September, the total precipitation amount is 67 mm (2.6 in) over the course of 11 days.

September Precipitation Trends in Cooperstown

The chart displays monthly precipitation patterns in Cooperstown, 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 Cooperstown, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec4447569910510110793671004852
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cooperstown

In Cooperstown in September humidity is 78%. With average temperature 17°C (64°F), this humidity feels like a warm embrace, making travel feel sticky and heavy, as the air wraps around you and the moments spent outdoors leave you longing for a cool respite.

September Average Humidity in Cooperstown

This chart illustrates the average monthly humidity levels in Cooperstown, 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 Cooperstown is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cooperstown

In Cooperstown 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 Cooperstown.

Maximum UV Index Levels in Cooperstown for September

The chart shows the monthly maximum UV Index (UVI) for Cooperstown 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 Cooperstown typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Cooperstown 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 Cooperstown Compares to Other Months

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

This table compares monthly weather conditions in Cooperstown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)44 mm (1.7 inches)89%low
February Weather-5°C (22°F)47 mm (1.9 inches)90%moderate
March Weather1°C (34°F)56 mm (2.2 inches)87%moderate
April Weather6°C (43°F)98 mm (3.9 inches)84%high
May Weather13°C (56°F)105 mm (4.1 inches)77%very high
June Weather19°C (67°F)101 mm (4.0 inches)75%very high
July Weather22°C (73°F)107 mm (4.2 inches)74%very high
August Weather21°C (70°F)93 mm (3.7 inches)73%very high
September Weather17°C (64°F)67 mm (2.6 inches)78%high
October Weather10°C (51°F)100 mm (3.9 inches)84%moderate
November Weather2°C (36°F)48 mm (1.9 inches)89%moderate
December Weather-2°C (28°F)52 mm (2.0 inches)87%low

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