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September Weather in Pierce City, United States

Last updated: June 24, 2025

In September, the average temperature in Pierce City, United States hovers around 23°C (73°F), creating a pleasantly mild climate. Temperatures can vary, with a minimum of 6°C (44°F) and a maximum reaching 34°C (94°F). Be prepared for some rain, as 58 mm (2.3 in) of precipitation is expected over 7 days, and don't forget that the average humidity is around 64%, adding to the region's charm!

September Temperature in Pierce City

In September in Pierce City, the average temperature is 23°C (73°F). Maximums can reach 34°C (94°F), and minimums can drop to as low as 6°C (44°F). This climate makes Pierce City an ideal destination for travelers seeking a mix of warm days and cooler nights.

September Weather in Pierce City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Pierce City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pierce City, September typically has an average temperature of 23°C (73°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec363850566676797773594742
Data source: Temperature data for Pierce City 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 Pierce City

In Pierce City in September, the precipitation amount is 58 mm (2.3 in) over the course of 7 days.

September Precipitation Trends in Pierce City

The chart displays monthly precipitation patterns in Pierce City, 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 Pierce City, September typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec86801471491618890116581486251
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Pierce City

In Pierce City in September, humidity is 64%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel quite comfortable yet slightly sticky, urging travelers to enjoy leisurely activities early in the day or seek shade during peak hours.

September Average Humidity in Pierce City

This chart illustrates the average monthly humidity levels in Pierce City, 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 Pierce City is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Pierce City

In Pierce City in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Pierce City.

Maximum UV Index Levels in Pierce City for September

The chart shows the monthly maximum UV Index (UVI) for Pierce City 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 Pierce City typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Pierce City 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 Pierce City Compares to Other Months

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

This table compares monthly weather conditions in Pierce City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)86 mm (3.4 inches)81%moderate
February Weather3°C (38°F)80 mm (3.2 inches)78%high
March Weather10°C (50°F)147 mm (5.8 inches)76%high
April Weather13°C (56°F)149 mm (5.9 inches)78%very high
May Weather19°C (66°F)161 mm (6.3 inches)83%very high
June Weather24°C (76°F)88 mm (3.5 inches)83%extreme
July Weather26°C (79°F)90 mm (3.5 inches)78%extreme
August Weather25°C (77°F)116 mm (4.6 inches)68%very high
September Weather23°C (73°F)58 mm (2.3 inches)64%very high
October Weather15°C (59°F)148 mm (5.8 inches)70%high
November Weather8°C (47°F)62 mm (2.4 inches)83%moderate
December Weather5°C (42°F)51 mm (2.0 inches)87%moderate

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