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September Weather in Summertown, United States

Last updated: June 24, 2025

In Summertown, United States, the average temperature in September is a pleasant 23°C (74°F). Visitors can expect a range from a minimum of 9°C (48°F) to a maximum of 36°C (98°F). During this month, precipitation averages 118 mm (4.7 in), spread across 9 days, while the air maintains a comfortable average humidity of 64%.

September Temperature in Summertown

In September in Summertown, the average temperature is 23°C (74°F). The maximum can reach 36°C (98°F), while the minimum can be as low as 9°C (48°F). Be prepared for warm days but bring a light jacket for cooler evenings while traveling.

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

The chart illustrates September temperature patterns in Summertown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Summertown, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (98°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec414654597076807874634946
Data source: Temperature data for Summertown 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 Summertown

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

September Precipitation Trends in Summertown

The chart displays monthly precipitation patterns in Summertown, 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 Summertown, September typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec11017517216311312812012811811774147
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Summertown

In Summertown in September, humidity is 64%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration enjoyable yet slightly sticky, so it's best to stay hydrated and take breaks in the shade while traveling.

September Average Humidity in Summertown

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

In Summertown 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 Summertown.

Maximum UV Index Levels in Summertown for September

The chart shows the monthly maximum UV Index (UVI) for Summertown 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 Summertown typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710101111109753
Data source: Summertown 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 Summertown Compares to Other Months

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

This table compares monthly weather conditions in Summertown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)110 mm (4.3 inches)87%moderate
February Weather8°C (46°F)175 mm (6.9 inches)87%high
March Weather12°C (54°F)172 mm (6.8 inches)85%high
April Weather15°C (60°F)163 mm (6.4 inches)82%very high
May Weather21°C (70°F)113 mm (4.5 inches)83%very high
June Weather25°C (77°F)128 mm (5.0 inches)82%extreme
July Weather26°C (80°F)120 mm (4.7 inches)78%extreme
August Weather25°C (78°F)128 mm (5.0 inches)67%very high
September Weather23°C (74°F)118 mm (4.7 inches)64%very high
October Weather17°C (64°F)117 mm (4.6 inches)74%high
November Weather9°C (49°F)74 mm (2.9 inches)87%moderate
December Weather8°C (46°F)147 mm (5.8 inches)88%moderate

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