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September Weather in Forest, United States

Last updated: June 24, 2025

In September, the average temperature in Forest, United States is a pleasant 25°C (78°F). However, temperatures can vary, with a minimum dipping to 11°C (51°F) and soaring to a maximum of 38°C (100°F). Expect an average of 101 mm (4.0 in) of precipitation spread over 9 days, bringing a humidity level of 74%, creating a warm and humid atmosphere that's perfect for enjoying the local scenery!

September Temperature in Forest

In September in Forest, the average temperature is 25°C (78°F). Maximums can reach 38°C (100°F), and minimums can be as low as 11°C (51°F). This mild climate makes Forest an ideal destination for travelers looking to enjoy warm weather activities.

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

The chart illustrates September temperature patterns in Forest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forest, September typically has an average temperature of 25°C (78°F), with highs reaching up to 38°C (100°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec485461647379818178695552
Data source: Temperature data for 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 Forest

In Forest in September, the total precipitation amount is 101 mm (4.0 in), occurring over a span of 9 days.

September Precipitation Trends in Forest

The chart displays monthly precipitation patterns in 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 Forest, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1081521301541401621281361019871124
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Forest

In Forest in September humidity is 74%. With an average temperature of 25°C (78°F), this humidity feels like you're enveloped in a warm, thick blanket, making outdoor activities feel more strenuous and necessitating frequent breaks and hydration for comfortable travel.

September Average Humidity in Forest

This chart illustrates the average monthly humidity levels in 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 Forest is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Forest

In Forest in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Forest.

Maximum UV Index Levels in Forest for September

The chart shows the monthly maximum UV Index (UVI) for 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 Forest typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478111112111110864
Data source: 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 Forest Compares to Other Months

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

This table compares monthly weather conditions in Forest, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)108 mm (4.3 inches)85%moderate
February Weather12°C (54°F)152 mm (6.0 inches)84%high
March Weather16°C (61°F)130 mm (5.1 inches)82%very high
April Weather18°C (65°F)154 mm (6.0 inches)82%extreme
May Weather23°C (74°F)140 mm (5.5 inches)82%extreme
June Weather26°C (79°F)162 mm (6.4 inches)79%extreme
July Weather27°C (81°F)128 mm (5.0 inches)82%extreme
August Weather27°C (81°F)135 mm (5.3 inches)77%extreme
September Weather25°C (78°F)101 mm (4.0 inches)74%very high
October Weather20°C (69°F)98 mm (3.9 inches)73%very high
November Weather13°C (55°F)71 mm (2.8 inches)85%high
December Weather11°C (52°F)124 mm (4.9 inches)88%moderate

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