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September Weather in Greenfield, United States

Last updated: June 24, 2025

In Greenfield, United States, the average temperature in September hovers around 24°C (75°F). Expect a range of temperatures, with a minimum of 9°C (49°F) and a maximum soaring to 37°C (98°F). During this month, you can anticipate approximately 97 mm (3.8 in) of precipitation spread over 7 days and enjoy an average humidity level of 75%.

September Temperature in Greenfield

In September in Greenfield, the average temperature is 24°C (75°F). Maximums can reach 37°C (98°F), and minimums can be as low as 9°C (49°F). This range of temperatures makes Greenfield an ideal destination for travelers seeking warm weather with the option for cooler evenings.

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

The chart illustrates September temperature patterns in Greenfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenfield, September typically has an average temperature of 24°C (75°F), with highs reaching up to 37°C (98°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec404353597078817875634845
Data source: Temperature data for Greenfield 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 Greenfield

In Greenfield in September, the precipitation amount is 97 mm (3.8 in) over the course of 7 days.

September Precipitation Trends in Greenfield

The chart displays monthly precipitation patterns in Greenfield, 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 Greenfield, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec10016316914811711712511197120100129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Greenfield

In Greenfield in September humidity is 75%. With average temperature 24°C (75°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities feel especially stifling and leaving you yearning for cool breezes and refreshingly cold drinks.

September Average Humidity in Greenfield

This chart illustrates the average monthly humidity levels in Greenfield, 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 Greenfield is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Greenfield

In Greenfield 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 Greenfield.

Maximum UV Index Levels in Greenfield for September

The chart shows the monthly maximum UV Index (UVI) for Greenfield 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 Greenfield typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710111111109753
Data source: Greenfield 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 Greenfield Compares to Other Months

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

This table compares monthly weather conditions in Greenfield, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)100 mm (3.9 inches)86%moderate
February Weather6°C (44°F)163 mm (6.4 inches)84%high
March Weather12°C (53°F)169 mm (6.6 inches)84%high
April Weather15°C (60°F)148 mm (5.8 inches)80%very high
May Weather21°C (71°F)117 mm (4.6 inches)82%extreme
June Weather25°C (78°F)116 mm (4.6 inches)83%extreme
July Weather27°C (81°F)125 mm (4.9 inches)79%extreme
August Weather26°C (78°F)111 mm (4.4 inches)76%very high
September Weather24°C (75°F)97 mm (3.8 inches)75%very high
October Weather17°C (63°F)120 mm (4.7 inches)74%high
November Weather9°C (49°F)99 mm (3.9 inches)85%moderate
December Weather7°C (45°F)129 mm (5.1 inches)88%moderate

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