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September Weather in Knightstown, United States

Last updated: June 24, 2025

In Knightstown, United States, the average temperature in September hovers around 21°C (69°F). Expect a range from a cool 5°C (42°F) to a warm 33°C (92°F), making it essential to dress in layers. During this month, precipitation averages around 90 mm (3.5 in) over the span of 7 days, and you'll experience an average humidity of 69%. Remember to stay hydrated!

September Temperature in Knightstown

In September in Knightstown, the average temperature is 21°C (69°F), with maximums reaching 33°C (92°F) and minimums dipping as low as 5°C (42°F). This diverse weather makes Knightstown a great destination for travelers seeking a mix of warm and cool experiences.

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

The chart illustrates September temperature patterns in Knightstown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Knightstown, September typically has an average temperature of 21°C (69°F), with highs reaching up to 33°C (92°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec303443526473767369574236
Data source: Temperature data for Knightstown 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 Knightstown

In Knightstown in September, the precipitation amount is 90 mm (3.5 in) over the course of 7 days.

September Precipitation Trends in Knightstown

The chart displays monthly precipitation patterns in Knightstown, 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 Knightstown, September typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec8110113610413911411889901029789
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Knightstown

In Knightstown in September, humidity is 69%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, making travel somewhat uncomfortable as the air clings around you, urging you to seek shade and refreshment along your journey.

September Average Humidity in Knightstown

This chart illustrates the average monthly humidity levels in Knightstown, 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 Knightstown is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Knightstown

In Knightstown in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Knightstown.

Maximum UV Index Levels in Knightstown for September

The chart shows the monthly maximum UV Index (UVI) for Knightstown 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 Knightstown typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Knightstown 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 Knightstown Compares to Other Months

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

This table compares monthly weather conditions in Knightstown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)81 mm (3.2 inches)87%moderate
February Weather1°C (34°F)101 mm (4.0 inches)85%moderate
March Weather6°C (43°F)136 mm (5.4 inches)86%high
April Weather11°C (52°F)104 mm (4.1 inches)84%very high
May Weather18°C (64°F)139 mm (5.5 inches)79%very high
June Weather23°C (73°F)114 mm (4.5 inches)82%extreme
July Weather24°C (76°F)118 mm (4.6 inches)79%very high
August Weather23°C (73°F)89 mm (3.5 inches)70%very high
September Weather21°C (69°F)90 mm (3.5 inches)69%very high
October Weather14°C (58°F)102 mm (4.0 inches)76%high
November Weather5°C (42°F)97 mm (3.8 inches)88%moderate
December Weather2°C (36°F)89 mm (3.5 inches)87%moderate

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