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September Weather in Lewisburg, United States

Last updated: June 24, 2025

In Lewisburg, United States, the average temperature in September hovers around 23°C (73°F). However, temperatures can fluctuate significantly, with a minimum of 8°C (47°F) and soaring up to a maximum of 37°C (98°F). Expect about 121 mm (4.8 in) of precipitation spread over 8 days, and be prepared for an average humidity level of 71%.

September Temperature in Lewisburg

In September in Lewisburg, the average temperature is 23°C (73°F). Maximums can reach 37°C (98°F) and minimums can be as low as 8°C (47°F). This makes Lewisburg a delightful destination for travelers looking to enjoy warm weather, while also being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Lewisburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lewisburg, September typically has an average temperature of 23°C (73°F), with highs reaching up to 37°C (98°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec384251586976807873624743
Data source: Temperature data for Lewisburg 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 Lewisburg

In Lewisburg in September, the precipitation amount is 121 mm (4.8 in) over the course of 8 days.

September Precipitation Trends in Lewisburg

The chart displays monthly precipitation patterns in Lewisburg, 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 Lewisburg, September typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec9216713216312212011012512111888126
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lewisburg

In Lewisburg in September humidity is 71%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making outdoor exploration slightly uncomfortable but still manageable if you stay hydrated and plan for breaks in shaded areas.

September Average Humidity in Lewisburg

This chart illustrates the average monthly humidity levels in Lewisburg, 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 Lewisburg is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lewisburg

In Lewisburg 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 Lewisburg.

Maximum UV Index Levels in Lewisburg for September

The chart shows the monthly maximum UV Index (UVI) for Lewisburg 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 Lewisburg typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101110109753
Data source: Lewisburg 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 Lewisburg Compares to Other Months

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

This table compares monthly weather conditions in Lewisburg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)92 mm (3.6 inches)87%moderate
February Weather6°C (42°F)167 mm (6.6 inches)86%high
March Weather10°C (51°F)132 mm (5.2 inches)86%high
April Weather14°C (58°F)162 mm (6.4 inches)82%very high
May Weather21°C (69°F)122 mm (4.8 inches)82%very high
June Weather25°C (77°F)120 mm (4.7 inches)83%extreme
July Weather27°C (80°F)110 mm (4.3 inches)80%very high
August Weather25°C (78°F)125 mm (4.9 inches)74%very high
September Weather23°C (73°F)121 mm (4.8 inches)71%very high
October Weather17°C (62°F)118 mm (4.6 inches)78%high
November Weather8°C (47°F)87 mm (3.4 inches)88%moderate
December Weather6°C (44°F)125 mm (4.9 inches)88%moderate

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