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September Weather in Bartlett, United States

Last updated: June 24, 2025

In September, the average temperature in Bartlett, United States is a comfortable 19°C (67°F), with extremes ranging from a brisk 3°C (38°F) to a warm 35°C (95°F). Expect 64 mm (2.5 in) of precipitation spread over 7 days, contributing to an average humidity of 77%.

September Temperature in Bartlett

In September in Bartlett, the average temperature is 19°C (67°F). Maximums can reach 35°C (95°F), while minimums can dip as low as 3°C (38°F). This variability makes Bartlett a great destination for travelers seeking a mix of warm and cooler weather experiences.

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

The chart illustrates September temperature patterns in Bartlett, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bartlett, September typically has an average temperature of 19°C (67°F), with highs reaching up to 35°C (95°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec242338465973767367493829
Data source: Temperature data for Bartlett 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 Bartlett

In Bartlett in September, the precipitation amount is 64 mm (2.5 in) accumulated over a period of 7 days.

September Precipitation Trends in Bartlett

The chart displays monthly precipitation patterns in Bartlett, 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 Bartlett, September typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec23238065135861008864762443
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bartlett

In Bartlett in September, humidity is 77%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel slightly more challenging as the air clings to your skin, turning every step into a leisurely stroll through a sauna.

September Average Humidity in Bartlett

This chart illustrates the average monthly humidity levels in Bartlett, 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 Bartlett is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%81%69%71%80%83%84%84%77%72%80%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bartlett

In Bartlett 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 Bartlett.

Maximum UV Index Levels in Bartlett for September

The chart shows the monthly maximum UV Index (UVI) for Bartlett 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 Bartlett typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356991110108642
Data source: Bartlett 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 Bartlett Compares to Other Months

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

This table compares monthly weather conditions in Bartlett, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)23 mm (0.9 inches)73%moderate
February Weather-5°C (23°F)23 mm (0.9 inches)81%moderate
March Weather3°C (38°F)80 mm (3.1 inches)69%high
April Weather8°C (46°F)65 mm (2.6 inches)71%very high
May Weather15°C (59°F)135 mm (5.3 inches)80%very high
June Weather23°C (73°F)86 mm (3.4 inches)83%extreme
July Weather24°C (76°F)100 mm (3.9 inches)84%very high
August Weather23°C (73°F)87 mm (3.4 inches)84%very high
September Weather19°C (67°F)64 mm (2.5 inches)77%very high
October Weather9°C (49°F)76 mm (3.0 inches)72%high
November Weather3°C (38°F)24 mm (1.0 inches)80%moderate
December Weather-2°C (29°F)43 mm (1.7 inches)79%low

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