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September Weather in Speedway, United States

Last updated: June 24, 2025

In September, the average temperature in Speedway, United States hovers around 21°C (70°F), making it a comfortable destination. However, be prepared for a temperature range that can drop to a chilly 6°C (43°F) and soar up to a sizzling 33°C (92°F). Expect about 80 mm (3.2 in) of precipitation spread over 7 days, contributing to an average humidity of 69%. Whether you’re looking for milder weather or a warm escape, Speedway has something to offer!

September Temperature in Speedway

In September in Speedway, the average temperature is 21°C (70°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 6°C (43°F). This weather makes Speedway an ideal destination for travelers seeking pleasant temperatures and a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Speedway, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Speedway, September typically has an average temperature of 21°C (70°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec303443526474777470584236
Data source: Temperature data for Speedway 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 Speedway

In Speedway in September, the total precipitation amount is 80 mm (3.2 in) over the course of 7 days.

September Precipitation Trends in Speedway

The chart displays monthly precipitation patterns in Speedway, 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 Speedway, September typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec829312794132107108101801039380
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Speedway

In Speedway in September humidity is 69%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but requiring occasional breaks for hydration and shade during your travels.

September Average Humidity in Speedway

This chart illustrates the average monthly humidity levels in Speedway, 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 Speedway is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Speedway

In Speedway 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 Speedway.

Maximum UV Index Levels in Speedway for September

The chart shows the monthly maximum UV Index (UVI) for Speedway 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 Speedway typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Speedway 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 Speedway Compares to Other Months

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

This table compares monthly weather conditions in Speedway, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)82 mm (3.2 inches)87%moderate
February Weather1°C (34°F)93 mm (3.7 inches)85%moderate
March Weather6°C (43°F)127 mm (5.0 inches)86%high
April Weather11°C (52°F)94 mm (3.7 inches)84%very high
May Weather18°C (65°F)132 mm (5.2 inches)79%very high
June Weather23°C (74°F)107 mm (4.2 inches)82%extreme
July Weather25°C (77°F)108 mm (4.2 inches)79%very high
August Weather23°C (74°F)101 mm (4.0 inches)70%very high
September Weather21°C (70°F)80 mm (3.2 inches)69%very high
October Weather14°C (58°F)103 mm (4.0 inches)76%high
November Weather5°C (42°F)93 mm (3.7 inches)88%moderate
December Weather2°C (36°F)80 mm (3.2 inches)87%moderate

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