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September Weather in Fountain City, United States

Last updated: June 24, 2025

In September, the average temperature in Fountain City, United States hovers around 18°C (64°F). Expect a range where minimums can dip to 3°C (37°F) and maximums can soar up to 33°C (92°F). During this month, you'll encounter an average precipitation of 112 mm (4.4 in) over approximately 10 days, complemented by a notable average humidity of 80%.

September Temperature in Fountain City

In September in Fountain City, the average temperature is 18°C (64°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 3°C (37°F). Be sure to pack layers and plan for a variety of weather conditions during your travels!

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

The chart illustrates September temperature patterns in Fountain City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fountain City, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec181935445970747064493425
Data source: Temperature data for Fountain 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 Fountain City

In Fountain City in September, the total precipitation amount is 112 mm (4.4 in) over the course of 10 days.

September Precipitation Trends in Fountain City

The chart displays monthly precipitation patterns in Fountain 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 Fountain City, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec34485593147147991331121155145
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fountain City

In Fountain City in September humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.

September Average Humidity in Fountain City

This chart illustrates the average monthly humidity levels in Fountain 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 Fountain City is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fountain City

In Fountain City 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 Fountain City.

Maximum UV Index Levels in Fountain City for September

The chart shows the monthly maximum UV Index (UVI) for Fountain 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 Fountain City typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458810997532
Data source: Fountain 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 Fountain City Compares to Other Months

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

This table compares monthly weather conditions in Fountain City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)34 mm (1.3 inches)88%low
February Weather-7°C (19°F)48 mm (1.9 inches)89%moderate
March Weather1°C (35°F)55 mm (2.2 inches)86%moderate
April Weather7°C (45°F)92 mm (3.6 inches)85%very high
May Weather15°C (59°F)147 mm (5.8 inches)79%very high
June Weather21°C (71°F)147 mm (5.8 inches)80%very high
July Weather23°C (74°F)99 mm (3.9 inches)80%very high
August Weather21°C (70°F)133 mm (5.2 inches)78%very high
September Weather18°C (64°F)112 mm (4.4 inches)80%high
October Weather9°C (49°F)115 mm (4.5 inches)84%moderate
November Weather1°C (35°F)51 mm (2.0 inches)89%moderate
December Weather-4°C (26°F)45 mm (1.8 inches)85%low

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