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September Weather in Vassar, United States

Last updated: June 24, 2025

In Vassar, United States, the average temperature in September hovers around 22°C (72°F). Expect a delightful range where minimums can dip to 6°C (42°F) and maximums can soar up to 34°C (94°F). During this month, anticipate about 83 mm (3.3 in) of precipitation spread over 7 days, contributing to an average humidity level of 71%. Enjoy the variability of the weather while staying prepared!

September Temperature in Vassar

In September in Vassar, the average temperature is 22°C (72°F). Maximums can reach 34°C (94°F), and minimums can be as low as 6°C (42°F). This makes Vassar an ideal destination for travelers seeking a mild climate with warm afternoons and cooler evenings.

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 22°C (72°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec323347556677807772574538
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 total precipitation amount is 83 mm (3.3 in) over the course of 7 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 83 mm (3.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec493110095204104100125831194033
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 71%. With an average temperature of 22°C (72°F), this humidity feels like the air is thick and slightly stifling, making outdoor activities require frequent breaks to stay hydrated and cool.

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 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%78%70%73%82%82%81%78%71%71%81%84%
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 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109643
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 Weather0°C (32°F)49 mm (1.9 inches)76%moderate
February Weather1°C (34°F)31 mm (1.2 inches)77%high
March Weather8°C (47°F)100 mm (3.9 inches)70%high
April Weather13°C (55°F)95 mm (3.7 inches)73%very high
May Weather19°C (66°F)204 mm (8.0 inches)82%very high
June Weather25°C (78°F)104 mm (4.1 inches)82%extreme
July Weather27°C (80°F)100 mm (3.9 inches)81%extreme
August Weather25°C (77°F)125 mm (4.9 inches)78%very high
September Weather22°C (72°F)83 mm (3.3 inches)71%very high
October Weather14°C (57°F)119 mm (4.7 inches)71%high
November Weather7°C (45°F)40 mm (1.6 inches)81%moderate
December Weather3°C (38°F)33 mm (1.3 inches)84%moderate

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