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September Weather in Forest Ranch, United States

Last updated: June 24, 2025

In September, the average temperature in Forest Ranch, United States is a pleasant 21°C (71°F). Expect a minimum temperature of 4°C (39°F) and a maximum of 40°C (105°F). During this month, precipitation totals around 15 mm (0.6 in) spread across 2 days, while the average humidity sits at a comfortable 44%.

September Temperature in Forest Ranch

In September in Forest Ranch, the average temperature is 21°C (71°F). Maximums can reach 40°C (105°F), and minimums can be as low as 4°C (39°F). Be prepared for a wide range of temperatures if you're planning to travel during this time!

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

The chart illustrates September temperature patterns in Forest Ranch, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forest Ranch, September typically has an average temperature of 21°C (71°F), with highs reaching up to 40°C (105°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec444548566373807871605043
Data source: Temperature data for Forest Ranch 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 Ranch

In Forest Ranch in September, the precipitation amount is 15 mm (0.6 in) over the course of 2 days.

September Precipitation Trends in Forest Ranch

The chart displays monthly precipitation patterns in Forest Ranch, 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 Ranch, September typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec200206177916215241558107154
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Forest Ranch

In Forest Ranch in September humidity is 44%. With an average temperature of 21°C (71°F), this humidity feels like a comfortable and refreshing climate for traveling, allowing for enjoyable outdoor activities and leisurely explorations without feeling too sticky or oppressive.

September Average Humidity in Forest Ranch

This chart illustrates the average monthly humidity levels in Forest Ranch, 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 Ranch is approximately 44%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%83%81%74%64%44%37%44%65%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Forest Ranch

In Forest Ranch 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 Forest Ranch.

Maximum UV Index Levels in Forest Ranch for September

The chart shows the monthly maximum UV Index (UVI) for Forest Ranch 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 Ranch typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578111111109743
Data source: Forest Ranch 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 Ranch Compares to Other Months

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

This table compares monthly weather conditions in Forest Ranch, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)200 mm (7.9 inches)84%moderate
February Weather7°C (46°F)206 mm (8.1 inches)84%moderate
March Weather9°C (48°F)177 mm (7.0 inches)83%high
April Weather13°C (56°F)90 mm (3.6 inches)81%very high
May Weather17°C (63°F)62 mm (2.4 inches)74%extreme
June Weather23°C (73°F)15 mm (0.6 inches)64%extreme
July Weather27°C (81°F)2 mm (0.1 inches)44%extreme
August Weather26°C (78°F)4 mm (0.2 inches)36%very high
September Weather21°C (71°F)15 mm (0.6 inches)44%very high
October Weather15°C (60°F)58 mm (2.3 inches)65%high
November Weather10°C (50°F)107 mm (4.2 inches)84%moderate
December Weather6°C (43°F)154 mm (6.1 inches)83%moderate

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