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September Weather in Haven, United States

Last updated: June 24, 2025

In September, the average temperature in Haven, United States is a pleasant 23°C (73°F). Expect a temperature range with a chilly low of 6°C (42°F) and a sweltering high of 36°C (98°F). During this month, anticipate 73 mm (2.9 in) of precipitation over about 7 days, with humidity levels hovering around 67%. Enjoy the variability of the season!

September Temperature in Haven

In September in Haven, the average temperature is 23°C (73°F), with maximums reaching 36°C (98°F) and minimums dropping as low as 6°C (42°F). This climate makes Haven an ideal destination for travelers seeking warm weather with comfortable cool evenings.

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

The chart illustrates September temperature patterns in Haven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Haven, September typically has an average temperature of 23°C (73°F), with highs reaching up to 36°C (98°F) and lows dropping to around 6°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec333448556678817873574538
Data source: Temperature data for Haven 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 Haven

In Haven in September, the precipitation amount is 73 mm (2.9 in) during a span of 7 days.

September Precipitation Trends in Haven

The chart displays monthly precipitation patterns in Haven, 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 Haven, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec2931755917493719573872527
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Haven

In Haven in September humidity is 67%. With an average temperature of 23°C (73°F), this humidity feels like a warm, enveloping blanket that makes the air feel thick and slightly sticky, which can be challenging for travelers who prefer cooler, drier conditions.

September Average Humidity in Haven

This chart illustrates the average monthly humidity levels in Haven, 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 Haven is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%67%70%82%82%81%76%67%72%80%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Haven

In Haven in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Haven.

Maximum UV Index Levels in Haven for September

The chart shows the monthly maximum UV Index (UVI) for Haven 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 Haven typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109753
Data source: Haven 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 Haven Compares to Other Months

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

This table compares monthly weather conditions in Haven, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)29 mm (1.1 inches)75%moderate
February Weather1°C (34°F)31 mm (1.2 inches)76%high
March Weather9°C (48°F)75 mm (3.0 inches)67%high
April Weather13°C (55°F)59 mm (2.3 inches)70%very high
May Weather19°C (66°F)174 mm (6.8 inches)82%very high
June Weather25°C (78°F)93 mm (3.7 inches)82%extreme
July Weather27°C (81°F)71 mm (2.8 inches)81%extreme
August Weather25°C (78°F)95 mm (3.7 inches)76%very high
September Weather23°C (73°F)73 mm (2.9 inches)67%very high
October Weather14°C (58°F)87 mm (3.4 inches)72%high
November Weather7°C (45°F)25 mm (1.0 inches)80%moderate
December Weather3°C (38°F)27 mm (1.1 inches)83%moderate

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