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September Weather in Atlantic, United States

Last updated: June 24, 2025

In September, the average temperature in Atlantic, United States is a pleasant 23°C (74°F). Visitors can expect a minimum of 12°C (53°F) and a maximum of 33°C (91°F), making it a comfortable time of year. However, be prepared for some rain, as 101 mm (4.0 in) of precipitation is expected over 10 days. With an average humidity of 78%, it's wise to stay hydrated while enjoying the beautiful weather!

September Temperature in Atlantic

In September in Atlantic, the average temperature is 23°C (74°F), with maximums potentially reaching 33°C (91°F) and minimums dropping to as low as 12°C (53°F). This pleasant climate makes it an ideal time for exploring and enjoying outdoor activities in Atlantic.

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

The chart illustrates September temperature patterns in Atlantic, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Atlantic, September typically has an average temperature of 23°C (74°F), with highs reaching up to 33°C (91°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec404347566574807873655145
Data source: Temperature data for Atlantic 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 Atlantic

In Atlantic in September, the precipitation amount is 101 mm (4.0 in) spread over the course of 10 days.

September Precipitation Trends in Atlantic

The chart displays monthly precipitation patterns in Atlantic, 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 Atlantic, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec811049290989112111710112389102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Atlantic

In Atlantic in September humidity is 78%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping embrace, making travel somewhat stifling and prompting frequent breaks to hydrate and seek shade.

September Average Humidity in Atlantic

This chart illustrates the average monthly humidity levels in Atlantic, 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 Atlantic is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Atlantic

In Atlantic 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 Atlantic.

Maximum UV Index Levels in Atlantic for September

The chart shows the monthly maximum UV Index (UVI) for Atlantic 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 Atlantic typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101010108753
Data source: Atlantic 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 Atlantic Compares to Other Months

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

This table compares monthly weather conditions in Atlantic, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)81 mm (3.2 inches)84%moderate
February Weather6°C (44°F)104 mm (4.1 inches)83%moderate
March Weather8°C (47°F)92 mm (3.6 inches)82%high
April Weather13°C (57°F)90 mm (3.5 inches)81%very high
May Weather18°C (65°F)97 mm (3.8 inches)80%very high
June Weather23°C (74°F)91 mm (3.6 inches)82%very high
July Weather27°C (80°F)121 mm (4.7 inches)81%very high
August Weather26°C (79°F)117 mm (4.6 inches)81%very high
September Weather23°C (74°F)101 mm (4.0 inches)78%very high
October Weather18°C (65°F)123 mm (4.9 inches)80%high
November Weather11°C (52°F)89 mm (3.5 inches)84%moderate
December Weather7°C (45°F)102 mm (4.0 inches)84%moderate

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