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September Weather in Alexandria, United States

Last updated: June 24, 2025

In September, the average temperature in Alexandria, United States is a pleasant 24°C (76°F). Expect a minimum of 10°C (51°F) and a maximum of 36°C (97°F), providing a wide range of experiences. With an average precipitation of 90 mm (3.6 in) spread over 9 days, coupled with a humidity level of 73%, it's a month that perfectly balances warmth and occasional showers. 🌦️

September Temperature in Alexandria

In September in Alexandria, the average temperature is 24°C (76°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as 10°C (51°F). This diverse temperature range makes it an ideal destination for travelers seeking both warm days and cool evenings.

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

The chart illustrates September temperature patterns in Alexandria, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alexandria, September typically has an average temperature of 24°C (76°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec465157637277807976675249
Data source: Temperature data for Alexandria 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 Alexandria

In Alexandria in September, the precipitation amount is 90 mm (3.6 in) spread over the course of 9 days.

September Precipitation Trends in Alexandria

The chart displays monthly precipitation patterns in Alexandria, 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 Alexandria, September typically receives around 90 mm (3.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1161651351551041361031259012384145
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alexandria

In Alexandria in September humidity is 73%. With an average temperature of 24°C (76°F), this humidity feels like a warm and sticky embrace, making travel slightly uncomfortable as the air thickens around you, prompting you to seek shade and stay hydrated.

September Average Humidity in Alexandria

This chart illustrates the average monthly humidity levels in Alexandria, 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 Alexandria is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Alexandria

In Alexandria 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 Alexandria.

Maximum UV Index Levels in Alexandria for September

The chart shows the monthly maximum UV Index (UVI) for Alexandria 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 Alexandria typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109864
Data source: Alexandria 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 Alexandria Compares to Other Months

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

This table compares monthly weather conditions in Alexandria, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)116 mm (4.6 inches)85%moderate
February Weather11°C (52°F)165 mm (6.5 inches)84%high
March Weather14°C (57°F)135 mm (5.3 inches)82%very high
April Weather17°C (63°F)155 mm (6.1 inches)82%very high
May Weather22°C (72°F)104 mm (4.1 inches)81%extreme
June Weather25°C (77°F)136 mm (5.3 inches)77%extreme
July Weather27°C (80°F)103 mm (4.0 inches)77%extreme
August Weather26°C (80°F)124 mm (4.9 inches)72%very high
September Weather24°C (76°F)90 mm (3.6 inches)73%very high
October Weather19°C (67°F)123 mm (4.8 inches)73%very high
November Weather11°C (53°F)83 mm (3.3 inches)85%high
December Weather9°C (49°F)145 mm (5.7 inches)88%moderate

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