nomadseason

September Weather in Delton, United States

Last updated: June 24, 2025

In September, the average temperature in Delton, United States is a pleasant 19°C (66°F). Temperatures can vary widely, with minimums dropping to 1°C (34°F) and maximums peaking at a warm 35°C (95°F). Be prepared for some rain, as precipitation amounts to 103 mm (4.1 in) spread over approximately 10 days. The climate is often characterized by a high average humidity of 79%, adding a touch of tropical feel to your experience.

September Temperature in Delton

In September in Delton, the average temperature is 19°C (66°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 1°C (34°F). This range makes it a versatile destination for travelers, allowing for both warm afternoons and cool evenings.

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

The chart illustrates September temperature patterns in Delton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Delton, September typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (95°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec262737476070757266533932
Data source: Temperature data for Delton 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 Delton

In Delton in September, the precipitation amount is 103 mm (4.1 in) over a span of 10 days.

September Precipitation Trends in Delton

The chart displays monthly precipitation patterns in Delton, 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 Delton, September typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7275769015211896781031366867
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Delton

In Delton in September humidity is 79%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making it feel much warmer than the actual temperature and creating a heavy, sticky atmosphere that can be a bit uncomfortable for traveling.

September Average Humidity in Delton

This chart illustrates the average monthly humidity levels in Delton, 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 Delton is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%87%82%81%78%79%80%82%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Delton

In Delton in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Delton.

Maximum UV Index Levels in Delton for September

The chart shows the monthly maximum UV Index (UVI) for Delton 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 Delton typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101097532
Data source: Delton 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 Delton Compares to Other Months

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

This table compares monthly weather conditions in Delton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)72 mm (2.8 inches)87%moderate
February Weather-3°C (27°F)75 mm (3.0 inches)87%moderate
March Weather3°C (37°F)76 mm (3.0 inches)86%high
April Weather8°C (47°F)90 mm (3.6 inches)87%very high
May Weather15°C (60°F)152 mm (6.0 inches)82%very high
June Weather21°C (70°F)118 mm (4.6 inches)81%very high
July Weather24°C (75°F)96 mm (3.8 inches)78%very high
August Weather22°C (72°F)78 mm (3.1 inches)79%very high
September Weather19°C (66°F)103 mm (4.1 inches)79%high
October Weather12°C (53°F)136 mm (5.4 inches)82%moderate
November Weather4°C (39°F)68 mm (2.7 inches)87%moderate
December Weather0°C (33°F)67 mm (2.6 inches)86%low

Compare Delton's Climate with Cities Worldwide