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September Weather in Advance, United States

Last updated: June 24, 2025

In September, the average temperature in Advance, United States is a pleasant 21°C (70°F). However, be prepared for variability, as temperatures can dip to a chilly 5°C (42°F) or soar to a warm 33°C (91°F). Rainfall averages around 72 mm (2.9 in) over 7 days, contributing to an average humidity of 69%. Whether you're soaking in the sunshine or braving the occasional shower, this month offers a dynamic climate experience!

September Temperature in Advance

In September, in Advance, the average temperature is 21°C (70°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 5°C (42°F). This variability makes it ideal for travelers to pack for both warm daytime adventures and cooler evenings.

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

The chart illustrates September temperature patterns in Advance, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Advance, September typically has an average temperature of 21°C (70°F), with highs reaching up to 33°C (91°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec293242526473767469574135
Data source: Temperature data for Advance generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Advance

In Advance in September, the precipitation amount is 72 mm (2.9 in) over the course of 7 days.

September Precipitation Trends in Advance

The chart displays monthly precipitation patterns in Advance, 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 Advance, September typically receives around 72 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec81871189414710610695721088574
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Advance

In Advance 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 Advance

This chart illustrates the average monthly humidity levels in Advance, 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 Advance 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 Advance

In Advance 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 Advance.

Maximum UV Index Levels in Advance for September

The chart shows the monthly maximum UV Index (UVI) for Advance 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 Advance typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Advance 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 Advance Compares to Other Months

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

This table compares monthly weather conditions in Advance, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)81 mm (3.2 inches)87%moderate
February Weather0°C (33°F)86 mm (3.4 inches)85%moderate
March Weather6°C (42°F)118 mm (4.7 inches)86%high
April Weather11°C (52°F)94 mm (3.7 inches)84%very high
May Weather18°C (64°F)147 mm (5.8 inches)79%very high
June Weather23°C (74°F)106 mm (4.2 inches)82%extreme
July Weather25°C (77°F)106 mm (4.2 inches)79%very high
August Weather23°C (74°F)95 mm (3.7 inches)70%very high
September Weather21°C (70°F)72 mm (2.9 inches)69%very high
October Weather14°C (57°F)108 mm (4.3 inches)76%high
November Weather5°C (41°F)85 mm (3.3 inches)88%moderate
December Weather2°C (36°F)74 mm (2.9 inches)87%low

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