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September Weather in Green City, United States

Last updated: June 24, 2025

In September, the average temperature in Green City, United States is a pleasant 21°C (70°F). Expect minimums dropping to 6°C (43°F) and highs soaring to 34°C (93°F). During this month, precipitation averages around 108 mm (4.3 in) over about 8 days, while the air carries a humidity level of 73%. Prepare for a month that melds warmth with occasional refreshing showers!

September Temperature in Green City

In September in Green City, the average temperature is 21°C (70°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 6°C (43°F). This makes it a great time to explore the area, as you can enjoy warm days and cool evenings.

September Weather in Green City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Green City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Green City, September typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec272943516475797570544134
Data source: Temperature data for Green City 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 Green City

In Green City in September, the precipitation amount is 108 mm (4.3 in) spread over 8 days.

September Precipitation Trends in Green City

The chart displays monthly precipitation patterns in Green City, 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 Green City, September typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec545010486168123101881081285036
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Green City

In Green City 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 Green City

This chart illustrates the average monthly humidity levels in Green City, 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 Green City is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Green City

In Green City 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 Green City.

Maximum UV Index Levels in Green City for September

The chart shows the monthly maximum UV Index (UVI) for Green City 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 Green City typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111108643
Data source: Green City 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 Green City Compares to Other Months

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

This table compares monthly weather conditions in Green City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)54 mm (2.1 inches)78%moderate
February Weather-2°C (29°F)50 mm (2.0 inches)80%moderate
March Weather6°C (43°F)104 mm (4.1 inches)77%high
April Weather11°C (51°F)86 mm (3.4 inches)77%very high
May Weather18°C (64°F)168 mm (6.6 inches)77%very high
June Weather24°C (76°F)122 mm (4.8 inches)81%extreme
July Weather26°C (79°F)101 mm (4.0 inches)81%extreme
August Weather24°C (75°F)88 mm (3.5 inches)77%very high
September Weather21°C (70°F)108 mm (4.3 inches)73%very high
October Weather12°C (55°F)128 mm (5.0 inches)75%high
November Weather5°C (41°F)50 mm (2.0 inches)85%moderate
December Weather1°C (35°F)36 mm (1.4 inches)83%moderate

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