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September Weather in Huntsville, United States

Last updated: June 24, 2025

In September, the average temperature in Huntsville, United States is a comfortable 24°C (75°F), with a range that can dip to 9°C (48°F) and soar up to 36°C (98°F). Expect a total precipitation of 118 mm (4.7 in) spread over about 9 days, accompanied by an average humidity of 64%. Stay prepared for a mix of warm days and occasional rain!

September Temperature in Huntsville

In September in Huntsville, the average temperature is 24°C (75°F). Maximum temperatures can reach 36°C (98°F), while the minimum can drop to as low as 9°C (48°F). Be sure to pack accordingly, as the climate can vary greatly throughout the day.

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

The chart illustrates September temperature patterns in Huntsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Huntsville, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (98°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec434855617176807975655047
Data source: Temperature data for Huntsville 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 Huntsville

In Huntsville in September, the precipitation amount is 118 mm (4.7 in), occurring over a span of 9 days.

September Precipitation Trends in Huntsville

The chart displays monthly precipitation patterns in Huntsville, 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 Huntsville, September typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1151802071489813713311911812578159
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Huntsville

In Huntsville 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 Huntsville

This chart illustrates the average monthly humidity levels in Huntsville, 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 Huntsville 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 Huntsville

In Huntsville 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 Huntsville.

Maximum UV Index Levels in Huntsville for September

The chart shows the monthly maximum UV Index (UVI) for Huntsville 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 Huntsville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Huntsville 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 Huntsville Compares to Other Months

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

This table compares monthly weather conditions in Huntsville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)115 mm (4.5 inches)87%moderate
February Weather9°C (49°F)180 mm (7.1 inches)87%high
March Weather13°C (55°F)207 mm (8.1 inches)85%very high
April Weather16°C (61°F)148 mm (5.8 inches)82%very high
May Weather21°C (71°F)98 mm (3.9 inches)83%extreme
June Weather25°C (77°F)137 mm (5.4 inches)82%extreme
July Weather26°C (80°F)133 mm (5.2 inches)78%extreme
August Weather26°C (79°F)119 mm (4.7 inches)67%very high
September Weather24°C (75°F)118 mm (4.7 inches)64%very high
October Weather18°C (65°F)125 mm (4.9 inches)74%high
November Weather10°C (51°F)78 mm (3.1 inches)87%moderate
December Weather8°C (47°F)158 mm (6.2 inches)88%moderate

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