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September Weather in Branford, United States

Last updated: June 24, 2025

In Branford, United States, the month of September brings an average temperature of 27°C (80°F). Expect a range where the minimum dips to 16°C (62°F) and the maximum can soar up to 38°C (100°F). With an average precipitation amount of 127 mm (5.0 in) over approximately 14 days, humidity levels sit at a notable 83%, creating a warm, humid atmosphere throughout the month.

September Temperature in Branford

In September in Branford, the average temperature is 27°C (80°F). Maximums can reach 38°C (100°F), while minimums can dip as low as 16°C (62°F). Be prepared for a mix of warm days and cooler evenings during your travels.

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

The chart illustrates September temperature patterns in Branford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Branford, September typically has an average temperature of 27°C (80°F), with highs reaching up to 38°C (100°F) and lows dropping to around 16°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec556264707780818180756358
Data source: Temperature data for Branford 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 Branford

In Branford in September, the total precipitation amount is 127 mm (5.0 in), occurring over the course of 14 days.

September Precipitation Trends in Branford

The chart displays monthly precipitation patterns in Branford, 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 Branford, September typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec63734178791601771791276263115
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Branford

In Branford in September, humidity is 83%. With an average temperature of 27°C (80°F), this humidity feels like a warm, steamy embrace, making traveling a bit uncomfortable as the air clings to your skin and renders even the slightest exertion more exhausting.

September Average Humidity in Branford

This chart illustrates the average monthly humidity levels in Branford, 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 Branford is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%78%77%75%76%79%78%83%81%83%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Branford

In Branford in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Branford.

Maximum UV Index Levels in Branford for September

The chart shows the monthly maximum UV Index (UVI) for Branford 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 Branford typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111121110965
Data source: Branford 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 Branford Compares to Other Months

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

This table compares monthly weather conditions in Branford, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)63 mm (2.5 inches)83%moderate
February Weather16°C (62°F)73 mm (2.9 inches)82%very high
March Weather18°C (65°F)41 mm (1.6 inches)78%very high
April Weather21°C (70°F)78 mm (3.1 inches)77%very high
May Weather25°C (77°F)79 mm (3.1 inches)75%extreme
June Weather27°C (80°F)160 mm (6.3 inches)76%extreme
July Weather27°C (82°F)177 mm (7.0 inches)79%extreme
August Weather27°C (82°F)178 mm (7.0 inches)78%extreme
September Weather27°C (80°F)127 mm (5.0 inches)83%very high
October Weather24°C (75°F)62 mm (2.4 inches)81%very high
November Weather17°C (63°F)63 mm (2.5 inches)83%high
December Weather15°C (58°F)115 mm (4.5 inches)86%moderate

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