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September Weather in Summerdale, United States

Last updated: June 24, 2025

In September, the average temperature in Summerdale, United States hovers around 26°C (80°F). Expect a minimum of about 15°C (59°F) and a maximum rising to 36°C (97°F). During this month, you can anticipate approximately 184 mm (7.3 in) of rain spread over 13 days, contributing to an average humidity level of 80%.

September Temperature in Summerdale

In September in Summerdale, the average temperature is 26°C (80°F). Maximums can reach 36°C (97°F), and minimums can be as low as 15°C (59°F). This makes it an ideal time to visit for warm weather lovers while still allowing for comfortable evenings.

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

The chart illustrates September temperature patterns in Summerdale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Summerdale, September typically has an average temperature of 26°C (80°F), with highs reaching up to 36°C (97°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec545963687580828279736157
Data source: Temperature data for Summerdale 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 Summerdale

In Summerdale in September, the total precipitation amount is 184 mm (7.3 in), recorded over a span of 13 days.

September Precipitation Trends in Summerdale

The chart displays monthly precipitation patterns in Summerdale, 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 Summerdale, September typically receives around 184 mm (7.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec911207712711622315518318411952137
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Summerdale

In Summerdale in September humidity is 80%. With an average temperature of 26°C (80°F), this humidity feels like a warm, enveloping blanket, making it quite uncomfortable for traveling. The thick, heavy air can leave you feeling sticky and fatigued, making outdoor activities more challenging and necessitating frequent breaks for hydration and cooling down.

September Average Humidity in Summerdale

This chart illustrates the average monthly humidity levels in Summerdale, 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 Summerdale is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Summerdale

In Summerdale 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 Summerdale.

Maximum UV Index Levels in Summerdale for September

The chart shows the monthly maximum UV Index (UVI) for Summerdale 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 Summerdale typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121210864
Data source: Summerdale 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 Summerdale Compares to Other Months

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

This table compares monthly weather conditions in Summerdale, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)91 mm (3.6 inches)82%moderate
February Weather15°C (59°F)120 mm (4.7 inches)80%very high
March Weather17°C (64°F)77 mm (3.0 inches)80%very high
April Weather20°C (68°F)127 mm (5.0 inches)78%extreme
May Weather24°C (76°F)116 mm (4.6 inches)73%extreme
June Weather27°C (81°F)223 mm (8.8 inches)71%extreme
July Weather28°C (82°F)155 mm (6.1 inches)79%extreme
August Weather28°C (82°F)183 mm (7.2 inches)78%extreme
September Weather26°C (80°F)184 mm (7.3 inches)80%very high
October Weather23°C (73°F)119 mm (4.7 inches)76%very high
November Weather16°C (61°F)52 mm (2.0 inches)83%high
December Weather14°C (57°F)137 mm (5.4 inches)87%moderate

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