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September Weather in Castleberry, United States

Last updated: June 24, 2025

In September, the average temperature in Castleberry, United States hovers around 26°C (78°F), providing a warm backdrop for outdoor activities. Expect minimums of 12°C (54°F) and occasional highs reaching up to 39°C (102°F). With 127 mm (5.0 in) of precipitation spread over 12 days, it's a good idea to keep an umbrella handy. The average humidity sits at a comfortable 79%, adding a touch of tropical allure to the atmosphere.

September Temperature in Castleberry

In September in Castleberry, the average temperature is 26°C (78°F). Maximum temperatures can reach 39°C (102°F), while minimum temperatures can drop to as low as 12°C (54°F). Travelers should be prepared for warm days and cooler nights.

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

The chart illustrates September temperature patterns in Castleberry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castleberry, September typically has an average temperature of 26°C (78°F), with highs reaching up to 39°C (102°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec515762667579818178715854
Data source: Temperature data for Castleberry 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 Castleberry

In Castleberry in September, the precipitation amount is 127 mm (5.0 in) occurring over the course of 12 days.

September Precipitation Trends in Castleberry

The chart displays monthly precipitation patterns in Castleberry, 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 Castleberry, September typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec99119991141231741451431279562143
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Castleberry

In Castleberry in September, humidity is 79%. With an average temperature of 26°C (78°F), this humidity feels like a tropical blanket enveloping you, making outdoor activities less comfortable for traveling.

September Average Humidity in Castleberry

This chart illustrates the average monthly humidity levels in Castleberry, 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 Castleberry is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%79%77%74%70%78%78%79%74%83%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Castleberry

In Castleberry 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 Castleberry.

Maximum UV Index Levels in Castleberry for September

The chart shows the monthly maximum UV Index (UVI) for Castleberry 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 Castleberry typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121110864
Data source: Castleberry 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 Castleberry Compares to Other Months

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

This table compares monthly weather conditions in Castleberry, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)99 mm (3.9 inches)83%moderate
February Weather14°C (58°F)119 mm (4.7 inches)82%very high
March Weather17°C (63°F)98 mm (3.9 inches)79%very high
April Weather19°C (67°F)114 mm (4.5 inches)77%extreme
May Weather24°C (75°F)123 mm (4.8 inches)74%extreme
June Weather26°C (80°F)174 mm (6.9 inches)70%extreme
July Weather27°C (81°F)145 mm (5.7 inches)78%extreme
August Weather27°C (81°F)143 mm (5.6 inches)78%extreme
September Weather26°C (78°F)127 mm (5.0 inches)79%very high
October Weather22°C (71°F)95 mm (3.7 inches)74%very high
November Weather14°C (58°F)62 mm (2.5 inches)83%high
December Weather12°C (54°F)143 mm (5.6 inches)86%moderate

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