September Weather in Lewisburg, United States

Last updated: June 24, 2025

In September, the average temperature in Lewisburg, United States is a pleasant 19°C (67°F). Expect temperatures to range from a cool 2°C (36°F) at night to a warm 33°C (91°F) during the day. With 128 mm (5.0 in) of precipitation spread over about 10 days, it's wise to prepare for some rain. The average humidity sits at a comfortable 66%, making this a balanced month for enjoying the local scenery.

September Temperature in Lewisburg

In September in Lewisburg, the average temperature is 19°C (67°F), with maximums reaching 33°C (91°F) and minimums dropping as low as 2°C (36°F). This wide range of temperatures makes Lewisburg a versatile destination for travelers, so be sure to pack for both warm and cool conditions.

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 19°C (67°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec303339506170757366564135
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 total precipitation amount is 128 mm (5.0 in) recorded over a span of 10 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 128 mm (5.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec70100901121341021451151281309490
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 66%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapping around you, making it mildly uncomfortable for traveling, as you may find yourself needing to frequently stop for hydration and to seek shade from the sun.

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 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
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 Weather-1°C (30°F)70 mm (2.8 inches)87%moderate
February Weather0°C (33°F)100 mm (3.9 inches)85%moderate
March Weather4°C (40°F)90 mm (3.5 inches)85%high
April Weather10°C (50°F)112 mm (4.4 inches)83%very high
May Weather16°C (61°F)133 mm (5.3 inches)75%very high
June Weather21°C (70°F)102 mm (4.0 inches)73%very high
July Weather24°C (75°F)145 mm (5.7 inches)65%very high
August Weather23°C (74°F)115 mm (4.5 inches)62%very high
September Weather19°C (67°F)128 mm (5.0 inches)66%very high
October Weather13°C (57°F)130 mm (5.1 inches)79%high
November Weather5°C (42°F)94 mm (3.7 inches)87%moderate
December Weather2°C (35°F)90 mm (3.5 inches)85%low

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