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September Weather in Fern Forest, United States

Last updated: June 24, 2025

In September, the average temperature in Fern Forest, United States hovers around 19°C (66°F). Expect a minimum of 13°C (56°F) and a maximum of 25°C (76°F). Be prepared for some rain, with precipitation averaging 132 mm (5.2 in) over 20 days, contributing to a humid atmosphere with an average humidity of 82%.

September Temperature in Fern Forest

In September in Fern Forest, the average temperature is 19°C (66°F). The maximum can reach 25°C (76°F), while the minimum can be as low as 13°C (56°F). This pleasant climate makes it an ideal time for outdoor activities and exploring the area's attractions.

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

The chart illustrates September temperature patterns in Fern Forest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fern Forest, September typically has an average temperature of 19°C (66°F), with highs reaching up to 25°C (76°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec605960616364656665646361
Data source: Temperature data for Fern 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 Fern Forest

In Fern Forest in September, the total precipitation amount is 132 mm (5.2 in) spread over 20 days.

September Precipitation Trends in Fern Forest

The chart displays monthly precipitation patterns in Fern 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 Fern Forest, September typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec13943034333117610892189132245153218
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fern Forest

In Fern Forest in September humidity is 82%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket wrapping around you, making it slightly uncomfortable for traveling as you might find yourself constantly seeking shade or a cool breeze.

September Average Humidity in Fern Forest

This chart illustrates the average monthly humidity levels in Fern 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 Fern Forest is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%77%80%80%82%83%84%82%83%83%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fern Forest

In Fern Forest in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Fern Forest.

Maximum UV Index Levels in Fern Forest for September

The chart shows the monthly maximum UV Index (UVI) for Fern 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 Fern Forest typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811121313131414131298
Data source: Fern 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 Fern Forest Compares to Other Months

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

This table compares monthly weather conditions in Fern Forest, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)139 mm (5.5 inches)79%very high
February Weather15°C (59°F)430 mm (16.9 inches)79%extreme
March Weather16°C (60°F)343 mm (13.5 inches)77%extreme
April Weather16°C (62°F)331 mm (13.0 inches)80%extreme
May Weather17°C (63°F)176 mm (6.9 inches)80%extreme
June Weather18°C (64°F)108 mm (4.2 inches)82%extreme
July Weather18°C (65°F)92 mm (3.6 inches)83%extreme
August Weather19°C (66°F)189 mm (7.4 inches)84%extreme
September Weather19°C (66°F)132 mm (5.2 inches)82%extreme
October Weather18°C (65°F)245 mm (9.7 inches)83%extreme
November Weather17°C (63°F)153 mm (6.0 inches)83%very high
December Weather16°C (61°F)218 mm (8.6 inches)81%very high

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