September Weather in Branchport, United States

Last updated: June 24, 2025

In September, the average temperature in Branchport, United States hovers around 17°C (63°F). Temperatures can fluctuate, reaching a minimum of 2°C (36°F) and soaring up to a maximum of 32°C (90°F). This month also sees an average precipitation of 86 mm (3.4 in) spread over 9 days, coupled with an average humidity level of 78%, adding to the overall atmospheric richness.

September Temperature in Branchport

In September in Branchport, the average temperature is 17°C (63°F). Maximum temperatures can reach 32°C (90°F), while the minimum can drop as low as 2°C (36°F). This makes Branchport a great destination for travelers seeking a variety of weather experiences, from warm days to cooler evenings.

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

The chart illustrates September temperature patterns in Branchport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Branchport, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec252734455766716963523830
Data source: Temperature data for Branchport 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 Branchport

In Branchport in September, the precipitation amount is 86 mm (3.4 in), falling over the course of 9 days.

September Precipitation Trends in Branchport

The chart displays monthly precipitation patterns in Branchport, 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 Branchport, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec72847611312510414489861398387
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Branchport

In Branchport in September, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.

September Average Humidity in Branchport

This chart illustrates the average monthly humidity levels in Branchport, 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 Branchport is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Branchport

In Branchport 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 Branchport.

Maximum UV Index Levels in Branchport for September

The chart shows the monthly maximum UV Index (UVI) for Branchport 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 Branchport typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Branchport 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 Branchport Compares to Other Months

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

This table compares monthly weather conditions in Branchport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)72 mm (2.8 inches)90%moderate
February Weather-3°C (28°F)84 mm (3.3 inches)90%moderate
March Weather1°C (34°F)76 mm (3.0 inches)87%high
April Weather7°C (45°F)112 mm (4.4 inches)88%very high
May Weather14°C (57°F)125 mm (4.9 inches)82%very high
June Weather19°C (66°F)104 mm (4.1 inches)79%very high
July Weather22°C (71°F)144 mm (5.7 inches)78%very high
August Weather21°C (70°F)89 mm (3.5 inches)76%very high
September Weather17°C (63°F)86 mm (3.4 inches)78%very high
October Weather11°C (53°F)139 mm (5.5 inches)84%high
November Weather3°C (38°F)83 mm (3.3 inches)89%moderate
December Weather-1°C (31°F)87 mm (3.4 inches)86%low

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