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September Weather in Northport, United States

Last updated: June 24, 2025

In September, the average temperature in Northport, United States is a comfortable 17°C (63°F), with daytime highs reaching up to 24°C (75°F) and cool evenings dropping to a minimum of 8°C (48°F). Expect 99 mm (3.9 in) of rainfall spread over approximately 12 days, contributing to an average humidity level of 79%. Ideal for experiencing the unique climate of this locale, don’t forget your umbrella!

September Temperature in Northport

In September in Northport, the average temperature is 17°C (63°F). Maximums can reach 24°C (75°F), while minimums can dip as low as 8°C (48°F). This mild climate makes it an ideal time for traveling, offering comfortable conditions for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Northport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Northport, September typically has an average temperature of 17°C (63°F), with highs reaching up to 24°C (75°F) and lows dropping to around 8°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec272631364354666863534032
Data source: Temperature data for Northport 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 Northport

In Northport in September, the total precipitation amount is 99 mm (3.9 in) recorded over a span of 12 days.

September Precipitation Trends in Northport

The chart displays monthly precipitation patterns in Northport, 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 Northport, September typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec69806598107101948699161110102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Northport

In Northport in September, humidity is 79%. With an average temperature of 17°C (63°F), this humidity feels like a warm, muggy embrace, making outdoor activities less comfortable and prompting travelers to seek shaded areas or cool refreshments more frequently.

September Average Humidity in Northport

This chart illustrates the average monthly humidity levels in Northport, 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 Northport is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%87%87%82%79%76%76%79%83%86%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Northport

In Northport in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Northport.

Maximum UV Index Levels in Northport for September

The chart shows the monthly maximum UV Index (UVI) for Northport 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 Northport typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Northport 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 Northport Compares to Other Months

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

This table compares monthly weather conditions in Northport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)69 mm (2.7 inches)91%low
February Weather-4°C (26°F)80 mm (3.1 inches)91%moderate
March Weather-1°C (31°F)65 mm (2.6 inches)87%moderate
April Weather2°C (36°F)98 mm (3.8 inches)87%high
May Weather6°C (43°F)107 mm (4.2 inches)82%very high
June Weather12°C (54°F)101 mm (4.0 inches)79%very high
July Weather19°C (66°F)94 mm (3.7 inches)75%very high
August Weather20°C (69°F)86 mm (3.4 inches)76%very high
September Weather17°C (63°F)99 mm (3.9 inches)79%high
October Weather11°C (53°F)161 mm (6.3 inches)83%moderate
November Weather4°C (40°F)110 mm (4.3 inches)86%moderate
December Weather0°C (33°F)102 mm (4.0 inches)87%low

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