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September Weather in Arcadia, United States

Last updated: June 24, 2025

In Arcadia, United States, the average temperature in September is a pleasant 18°C (64°F). However, temperatures can vary significantly, with a minimum of 2°C (36°F) and a maximum of 33°C (92°F). During this period, expect 113 mm (4.4 in) of precipitation spread over 9 days, contributing to an average humidity of 80%. This mix of warmth and moisture creates a unique climate worth experiencing!

September Temperature in Arcadia

In September in Arcadia, the average temperature is 18°C (64°F), with maximums reaching 33°C (92°F) and minimums dropping as low as 2°C (36°F). This diverse temperature range makes Arcadia an ideal destination for travelers seeking both warm and cooler experiences during their visit.

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

The chart illustrates September temperature patterns in Arcadia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arcadia, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec181935445970737064493425
Data source: Temperature data for Arcadia 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 Arcadia

In Arcadia in September, the precipitation amount is 113 mm (4.4 in) over a period of 9 days.

September Precipitation Trends in Arcadia

The chart displays monthly precipitation patterns in Arcadia, 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 Arcadia, September typically receives around 113 mm (4.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec334856941421551021411131165345
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Arcadia

In Arcadia in September humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.

September Average Humidity in Arcadia

This chart illustrates the average monthly humidity levels in Arcadia, 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 Arcadia is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Arcadia

In Arcadia in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Arcadia.

Maximum UV Index Levels in Arcadia for September

The chart shows the monthly maximum UV Index (UVI) for Arcadia 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 Arcadia typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458810997532
Data source: Arcadia 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 Arcadia Compares to Other Months

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

This table compares monthly weather conditions in Arcadia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (19°F)33 mm (1.3 inches)88%low
February Weather-7°C (20°F)48 mm (1.9 inches)89%moderate
March Weather1°C (35°F)56 mm (2.2 inches)86%moderate
April Weather7°C (45°F)94 mm (3.7 inches)85%very high
May Weather15°C (59°F)142 mm (5.6 inches)79%very high
June Weather21°C (70°F)155 mm (6.1 inches)80%very high
July Weather23°C (74°F)102 mm (4.0 inches)80%very high
August Weather21°C (70°F)141 mm (5.5 inches)78%very high
September Weather18°C (64°F)113 mm (4.4 inches)80%high
October Weather9°C (49°F)116 mm (4.6 inches)84%moderate
November Weather1°C (35°F)53 mm (2.1 inches)89%moderate
December Weather-4°C (26°F)45 mm (1.8 inches)85%low

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