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September Weather in Leesburg, United States

Last updated: June 24, 2025

In September, the average temperature in Leesburg, United States is a pleasant 24°C (75°F). Expect a range where the minimum dips to 11°C (51°F) and the maximum peaks at a warm 36°C (96°F). Prepare for some moisture, as 109 mm (4.3 in) of precipitation is typically spread over 9 days. With an average humidity of 64%, it’s a comfortable yet slightly humid climate, perfect for exploring!

September Temperature in Leesburg

In September in Leesburg, the average temperature is 24°C (75°F). Maximums can reach 36°C (96°F) and minimums can be as low as 11°C (51°F). It's an ideal time for travelers to enjoy a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Leesburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Leesburg, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (96°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec445056627176807975665147
Data source: Temperature data for Leesburg 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 Leesburg

In Leesburg in September, the total precipitation amount is 109 mm (4.3 in) spread over 9 days.

September Precipitation Trends in Leesburg

The chart displays monthly precipitation patterns in Leesburg, 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 Leesburg, September typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec12219517415210515010613410913286159
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Leesburg

In Leesburg in September humidity is 64%. With average temperature 24°C (75°F), this humidity feels like a warm blanket enveloping you, making outdoor exploration both refreshing and a little sticky, perfect for leisurely strolls and shaded cafes but with a need for frequent water breaks.

September Average Humidity in Leesburg

This chart illustrates the average monthly humidity levels in Leesburg, 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 Leesburg is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Leesburg

In Leesburg 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 Leesburg.

Maximum UV Index Levels in Leesburg for September

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

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

This table compares monthly weather conditions in Leesburg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)122 mm (4.8 inches)87%moderate
February Weather10°C (50°F)195 mm (7.7 inches)87%high
March Weather13°C (56°F)174 mm (6.9 inches)85%very high
April Weather16°C (62°F)152 mm (6.0 inches)82%very high
May Weather22°C (71°F)105 mm (4.1 inches)83%extreme
June Weather25°C (76°F)150 mm (5.9 inches)82%extreme
July Weather26°C (80°F)105 mm (4.2 inches)78%extreme
August Weather26°C (79°F)134 mm (5.3 inches)67%extreme
September Weather24°C (75°F)109 mm (4.3 inches)64%very high
October Weather19°C (66°F)132 mm (5.2 inches)74%very high
November Weather11°C (52°F)86 mm (3.4 inches)87%high
December Weather9°C (48°F)159 mm (6.3 inches)88%moderate

Compare Leesburg's Climate with Cities Worldwide