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September Weather in Mound City, United States

Last updated: June 24, 2025

The average temperature in Mound City, United States during September is a pleasant 21°C (71°F). Expect temperatures to range from a brisk minimum of 6°C (43°F) to a sweltering maximum of 35°C (95°F). With an average precipitation of 96 mm (3.8 in) spread over 8 days and an average humidity of 75%, prepare for a mix of sunny days and refreshing showers!

September Temperature in Mound City

In September in Mound City, the average temperature is 21°C (71°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 6°C (43°F). Overall, it's a great time to explore Mound City with warm days and cooler nights, perfect for outdoor adventures.

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

The chart illustrates September temperature patterns in Mound City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mound City, September typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec272944526577797571554234
Data source: Temperature data for Mound 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 Mound City

In Mound City in September, the precipitation amount is 96 mm (3.8 in) over the course of 8 days.

September Precipitation Trends in Mound City

The chart displays monthly precipitation patterns in Mound 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 Mound City, September typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec38329284157128118115961323933
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mound City

In Mound City in September, humidity is 75%. With an average temperature of 21°C (71°F), this humidity feels like a warm blanket wrapping around you, making travel slightly uncomfortable but offering a lush, vibrant atmosphere that invites exploration at a leisurely pace.

September Average Humidity in Mound City

This chart illustrates the average monthly humidity levels in Mound 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 Mound City is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mound City

In Mound City 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 Mound City.

Maximum UV Index Levels in Mound City for September

The chart shows the monthly maximum UV Index (UVI) for Mound 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 Mound City typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Mound 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 Mound City Compares to Other Months

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

This table compares monthly weather conditions in Mound City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)38 mm (1.5 inches)76%moderate
February Weather-2°C (29°F)32 mm (1.2 inches)80%moderate
March Weather7°C (44°F)92 mm (3.6 inches)73%high
April Weather11°C (53°F)84 mm (3.3 inches)74%very high
May Weather18°C (65°F)157 mm (6.2 inches)78%very high
June Weather25°C (77°F)128 mm (5.0 inches)82%extreme
July Weather26°C (79°F)118 mm (4.7 inches)83%very high
August Weather24°C (76°F)115 mm (4.5 inches)80%very high
September Weather21°C (71°F)96 mm (3.8 inches)75%very high
October Weather13°C (55°F)132 mm (5.2 inches)75%high
November Weather5°C (42°F)39 mm (1.6 inches)82%moderate
December Weather1°C (35°F)33 mm (1.3 inches)83%moderate

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