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September Weather in Green Forest, United States

Last updated: June 24, 2025

In September, the average temperature in Green Forest, United States is a pleasant 22°C (73°F). However, temperatures can fluctuate, with a minimum of 7°C (45°F) and a maximum of 34°C (93°F). This month, expect 61 mm (2.4 in) of precipitation over about 7 days, and enjoy a comfortable average humidity of 64%.

September Temperature in Green Forest

In September in Green Forest, the average temperature is 22°C (73°F). Maximums can reach 34°C (93°F) and minimums can be as low as 7°C (45°F). This variability makes it advisable for travelers to pack layers to accommodate the warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Green Forest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Green Forest, September typically has an average temperature of 22°C (73°F), with highs reaching up to 34°C (93°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec374051566675787672594743
Data source: Temperature data for Green Forest 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 Forest

In Green Forest in September, the precipitation amount is 61 mm (2.4 in) over the course of 7 days.

September Precipitation Trends in Green Forest

The chart displays monthly precipitation patterns in Green Forest, 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 Forest, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec79991361571749885146611287174
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Green Forest

In Green Forest in September humidity is 64%. With an average temperature of 22°C (73°F), this humidity feels like a warm embrace, making traveling comfortable yet slightly sticky, as you enjoy the vibrant sights while needing to stay hydrated.

September Average Humidity in Green Forest

This chart illustrates the average monthly humidity levels in Green Forest, 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 Forest is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Green Forest

In Green Forest 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 Green Forest.

Maximum UV Index Levels in Green Forest for September

The chart shows the monthly maximum UV Index (UVI) for Green Forest 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 Forest typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Green Forest 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 Forest Compares to Other Months

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

This table compares monthly weather conditions in Green Forest, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)79 mm (3.1 inches)81%moderate
February Weather4°C (40°F)99 mm (3.9 inches)78%high
March Weather10°C (51°F)136 mm (5.4 inches)76%very high
April Weather13°C (56°F)157 mm (6.2 inches)78%very high
May Weather19°C (67°F)174 mm (6.8 inches)83%extreme
June Weather24°C (75°F)98 mm (3.9 inches)83%extreme
July Weather26°C (78°F)84 mm (3.3 inches)78%extreme
August Weather24°C (76°F)146 mm (5.8 inches)68%very high
September Weather22°C (73°F)61 mm (2.4 inches)64%very high
October Weather15°C (60°F)128 mm (5.0 inches)70%high
November Weather8°C (48°F)71 mm (2.8 inches)83%moderate
December Weather6°C (43°F)74 mm (2.9 inches)87%moderate

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