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September Weather in Campbellsport, United States

Last updated: June 24, 2025

In Campbellsport, United States, the average temperature in September hovers around 18°C (64°F). Temperatures can vary, with a minimum of 2°C (37°F) and soaring up to a maximum of 33°C (92°F). Expect 89 mm (3.5 in) of precipitation spread over 10 days, contributing to an average humidity of 79%. Prepare for a blend of warmth and moisture during your visit!

September Temperature in Campbellsport

In September in Campbellsport, the average temperature is 18°C (64°F). Maximums can reach 33°C (92°F), while minimums can dip as low as 2°C (37°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates September temperature patterns in Campbellsport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Campbellsport, 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 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec212335445768737064513629
Data source: Temperature data for Campbellsport 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 Campbellsport

In Campbellsport in September, the precipitation amount is 89 mm (3.5 in) over a period of 10 days.

September Precipitation Trends in Campbellsport

The chart displays monthly precipitation patterns in Campbellsport, 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 Campbellsport, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec50495810712010710491891114446
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Campbellsport

In Campbellsport in September, humidity is 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.

September Average Humidity in Campbellsport

This chart illustrates the average monthly humidity levels in Campbellsport, 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 Campbellsport is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Campbellsport

In Campbellsport 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 Campbellsport.

Maximum UV Index Levels in Campbellsport for September

The chart shows the monthly maximum UV Index (UVI) for Campbellsport 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 Campbellsport typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Campbellsport 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 Campbellsport Compares to Other Months

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

This table compares monthly weather conditions in Campbellsport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)50 mm (2.0 inches)85%low
February Weather-5°C (23°F)48 mm (1.9 inches)85%moderate
March Weather2°C (35°F)58 mm (2.3 inches)85%moderate
April Weather7°C (45°F)107 mm (4.2 inches)85%very high
May Weather14°C (58°F)120 mm (4.7 inches)78%very high
June Weather20°C (69°F)107 mm (4.2 inches)80%very high
July Weather23°C (73°F)104 mm (4.1 inches)78%very high
August Weather21°C (71°F)91 mm (3.6 inches)76%very high
September Weather18°C (64°F)89 mm (3.5 inches)79%high
October Weather10°C (51°F)111 mm (4.4 inches)83%moderate
November Weather2°C (36°F)44 mm (1.7 inches)88%moderate
December Weather-2°C (29°F)46 mm (1.8 inches)81%low

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