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September Weather in Nortonville, United States

Last updated: June 24, 2025

In September, the average temperature in Nortonville, United States is a pleasant 22°C (71°F). Expect a minimum of 6°C (44°F) and a maximum of 34°C (93°F), offering a nice range for outdoor activities. However, be prepared for some rain, as the region receives about 87 mm (3.4 in) of precipitation over 8 days. With an average humidity of 71%, the air can feel quite humid, so make sure to stay hydrated!

September Temperature in Nortonville

In September in Nortonville, the average temperature is 22°C (71°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 6°C (44°F). This variability in temperature makes Nortonville a great destination for travelers looking for both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Nortonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nortonville, September typically has an average temperature of 22°C (71°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec303145536577797671564336
Data source: Temperature data for Nortonville 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 Nortonville

In Nortonville in September, the precipitation amount is 87 mm (3.4 in), which occurs over a span of 8 days.

September Precipitation Trends in Nortonville

The chart displays monthly precipitation patterns in Nortonville, 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 Nortonville, September typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec4232938222012581116881224133
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nortonville

In Nortonville in September, humidity is 71%. With an average temperature of 22°C (71°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet requiring plenty of hydration to stay comfortable while exploring.

September Average Humidity in Nortonville

This chart illustrates the average monthly humidity levels in Nortonville, 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 Nortonville is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%78%70%73%82%82%81%78%71%71%81%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nortonville

In Nortonville 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 Nortonville.

Maximum UV Index Levels in Nortonville for September

The chart shows the monthly maximum UV Index (UVI) for Nortonville 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 Nortonville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Nortonville 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 Nortonville Compares to Other Months

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

This table compares monthly weather conditions in Nortonville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)42 mm (1.6 inches)76%moderate
February Weather-1°C (31°F)32 mm (1.3 inches)77%moderate
March Weather7°C (45°F)93 mm (3.7 inches)70%high
April Weather12°C (53°F)82 mm (3.2 inches)73%very high
May Weather18°C (65°F)220 mm (8.6 inches)82%very high
June Weather25°C (77°F)125 mm (4.9 inches)82%extreme
July Weather26°C (80°F)81 mm (3.2 inches)81%extreme
August Weather25°C (76°F)116 mm (4.6 inches)78%very high
September Weather22°C (71°F)87 mm (3.4 inches)71%very high
October Weather13°C (56°F)122 mm (4.8 inches)71%high
November Weather6°C (43°F)41 mm (1.6 inches)81%moderate
December Weather2°C (37°F)33 mm (1.3 inches)84%moderate

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