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September Weather in Johnsonville, United States

Last updated: June 24, 2025

In September, the average temperature in Johnsonville, United States is a pleasant 25°C (77°F). Temperatures can vary, with minimums dipping to 10°C (50°F) and maximums soaring to 35°C (95°F). Expect around 158 mm (6.2 in) of precipitation spread over approximately 12 days, contributing to an average humidity of 81%.

September Temperature in Johnsonville

In September in Johnsonville, the average temperature is 25°C (77°F). Maximums can reach 35°C (95°F), and minimums can be as low as 10°C (50°F). Be prepared for warm days and cooler evenings, making it an ideal time for outdoor adventures and exploration.

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

The chart illustrates September temperature patterns in Johnsonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnsonville, September typically has an average temperature of 25°C (77°F), with highs reaching up to 35°C (95°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec495458657378818077695551
Data source: Temperature data for Johnsonville 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 Johnsonville

In Johnsonville in September, the precipitation amount is 158 mm (6.2 in) over a span of 12 days.

September Precipitation Trends in Johnsonville

The chart displays monthly precipitation patterns in Johnsonville, 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 Johnsonville, September typically receives around 158 mm (6.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec698672951081491722071585483134
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Johnsonville

In Johnsonville in September, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

September Average Humidity in Johnsonville

This chart illustrates the average monthly humidity levels in Johnsonville, 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 Johnsonville is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%79%78%78%78%82%81%81%78%82%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Johnsonville

In Johnsonville 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 Johnsonville.

Maximum UV Index Levels in Johnsonville for September

The chart shows the monthly maximum UV Index (UVI) for Johnsonville 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 Johnsonville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
Data source: Johnsonville 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 Johnsonville Compares to Other Months

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

This table compares monthly weather conditions in Johnsonville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)69 mm (2.7 inches)83%moderate
February Weather12°C (55°F)86 mm (3.4 inches)79%high
March Weather14°C (58°F)72 mm (2.8 inches)79%very high
April Weather18°C (65°F)94 mm (3.7 inches)78%very high
May Weather23°C (74°F)108 mm (4.3 inches)78%extreme
June Weather26°C (78°F)149 mm (5.9 inches)78%extreme
July Weather27°C (81°F)172 mm (6.8 inches)82%extreme
August Weather27°C (80°F)207 mm (8.1 inches)81%extreme
September Weather25°C (77°F)158 mm (6.2 inches)81%very high
October Weather21°C (69°F)54 mm (2.1 inches)78%very high
November Weather13°C (56°F)83 mm (3.2 inches)82%high
December Weather11°C (52°F)133 mm (5.3 inches)84%moderate

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