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September Weather in Scottdale, United States

Last updated: June 24, 2025

In September, the average temperature in Scottdale, United States is a pleasant 19°C (67°F). Expect temperatures to range from a cool 3°C (38°F) to a warm 33°C (91°F). During this month, 112 mm (4.4 in) of rain typically falls over 10 days, while the average humidity hovers around 68%. Whether you enjoy the warm sun or the refreshing rain, there's something for everyone!

September Temperature in Scottdale

In September in Scottdale, the average temperature is 19°C (67°F). Maximums can reach 33°C (91°F), and minimums can be as low as 3°C (38°F). This makes Scottdale a great destination for travelers seeking mild weather and a chance to enjoy a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Scottdale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Scottdale, September typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (91°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec303541516169737266564136
Data source: Temperature data for Scottdale 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 Scottdale

In Scottdale in September, the total precipitation amount is 112 mm (4.4 in) over the course of 10 days.

September Precipitation Trends in Scottdale

The chart displays monthly precipitation patterns in Scottdale, 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 Scottdale, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec951391201331511621178911211692127
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Scottdale

In Scottdale in September, humidity is 68%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket, making travel pleasant yet slightly muggy, which can be refreshing while exploring but may require occasional breaks to stay comfortable.

September Average Humidity in Scottdale

This chart illustrates the average monthly humidity levels in Scottdale, 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 Scottdale is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Scottdale

In Scottdale in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Scottdale.

Maximum UV Index Levels in Scottdale for September

The chart shows the monthly maximum UV Index (UVI) for Scottdale 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 Scottdale typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101010108643
Data source: Scottdale 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 Scottdale Compares to Other Months

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

This table compares monthly weather conditions in Scottdale, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)95 mm (3.8 inches)86%moderate
February Weather2°C (35°F)139 mm (5.5 inches)86%moderate
March Weather5°C (41°F)120 mm (4.7 inches)86%high
April Weather10°C (51°F)133 mm (5.2 inches)84%very high
May Weather16°C (62°F)151 mm (6.0 inches)78%very high
June Weather20°C (69°F)162 mm (6.4 inches)79%very high
July Weather23°C (74°F)117 mm (4.6 inches)70%very high
August Weather22°C (72°F)89 mm (3.5 inches)59%very high
September Weather19°C (67°F)112 mm (4.4 inches)68%very high
October Weather14°C (57°F)115 mm (4.5 inches)80%high
November Weather5°C (42°F)92 mm (3.6 inches)86%moderate
December Weather2°C (36°F)127 mm (5.0 inches)85%moderate

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