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September Weather in Vassar, United States

Last updated: June 24, 2025

In September, the average temperature in Vassar, United States hovers around 18°C (64°F). Expect a range from 0°C (33°F) at the lows to a warm 34°C (94°F) at the highs. During this month, precipitation is typically 87 mm (3.4 in) over about 10 days, while the average humidity lingers at a notable 80%.

September Temperature in Vassar

In September in Vassar, the average temperature is 18°C (64°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 0°C (33°F). This varied climate makes it essential for travelers to pack for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Vassar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vassar, September typically has an average temperature of 18°C (64°F), with highs reaching up to 34°C (94°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec252635465969737164533831
Data source: Temperature data for Vassar 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 Vassar

In Vassar in September, the precipitation amount is 87 mm (3.4 in) over the course of 10 days.

September Precipitation Trends in Vassar

The chart displays monthly precipitation patterns in Vassar, 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 Vassar, September typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec61646394981047284871076454
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vassar

In Vassar in September humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.

September Average Humidity in Vassar

This chart illustrates the average monthly humidity levels in Vassar, 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 Vassar is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vassar

In Vassar 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 Vassar.

Maximum UV Index Levels in Vassar for September

The chart shows the monthly maximum UV Index (UVI) for Vassar 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 Vassar typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Vassar 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 Vassar Compares to Other Months

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

This table compares monthly weather conditions in Vassar, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)61 mm (2.4 inches)88%low
February Weather-3°C (26°F)64 mm (2.5 inches)87%moderate
March Weather2°C (35°F)63 mm (2.5 inches)85%moderate
April Weather8°C (46°F)94 mm (3.7 inches)86%very high
May Weather15°C (59°F)98 mm (3.8 inches)80%very high
June Weather20°C (69°F)104 mm (4.1 inches)80%very high
July Weather23°C (74°F)72 mm (2.8 inches)80%very high
August Weather22°C (71°F)84 mm (3.3 inches)80%very high
September Weather18°C (64°F)87 mm (3.4 inches)80%high
October Weather11°C (53°F)107 mm (4.2 inches)84%moderate
November Weather3°C (38°F)64 mm (2.5 inches)89%moderate
December Weather0°C (31°F)54 mm (2.1 inches)86%low

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