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September Weather in Marrowstone, United States

Last updated: June 24, 2025

In Marrowstone, United States, the average temperature in September hovers around 15°C (59°F). Daily temperatures can range from a cool 9°C (48°F) to a warm 24°C (76°F). Be prepared for some rain, as the area receives an average of 129 mm (5.1 in) of precipitation over 15 days. With an average humidity level of 74%, you'll definitely feel the moisture in the air!

September Temperature in Marrowstone

In September in Marrowstone, the average temperature is 15°C (59°F). Maximums can reach 24°C (76°F), and minimums can be as low as 9°C (48°F). This mild climate makes it an ideal time for outdoor activities and exploring the local attractions.

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

The chart illustrates September temperature patterns in Marrowstone, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marrowstone, September typically has an average temperature of 15°C (59°F), with highs reaching up to 24°C (76°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec434144485458626359524743
Data source: Temperature data for Marrowstone 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 Marrowstone

In Marrowstone in September, the precipitation amount is 129 mm (5.1 in) over a span of 15 days.

September Precipitation Trends in Marrowstone

The chart displays monthly precipitation patterns in Marrowstone, 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 Marrowstone, September typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec160157131124911265851129155187187
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Marrowstone

In Marrowstone in September, humidity is 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.

September Average Humidity in Marrowstone

This chart illustrates the average monthly humidity levels in Marrowstone, 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 Marrowstone is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Marrowstone

In Marrowstone 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 Marrowstone.

Maximum UV Index Levels in Marrowstone for September

The chart shows the monthly maximum UV Index (UVI) for Marrowstone 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 Marrowstone typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987522
Data source: Marrowstone 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 Marrowstone Compares to Other Months

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

This table compares monthly weather conditions in Marrowstone, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)160 mm (6.3 inches)86%low
February Weather5°C (41°F)157 mm (6.2 inches)84%moderate
March Weather7°C (45°F)131 mm (5.1 inches)85%moderate
April Weather9°C (49°F)124 mm (4.9 inches)83%high
May Weather12°C (54°F)91 mm (3.6 inches)84%very high
June Weather15°C (58°F)125 mm (4.9 inches)84%very high
July Weather17°C (62°F)58 mm (2.3 inches)82%very high
August Weather17°C (63°F)51 mm (2.0 inches)73%very high
September Weather15°C (59°F)129 mm (5.1 inches)74%high
October Weather11°C (52°F)155 mm (6.1 inches)83%moderate
November Weather8°C (47°F)187 mm (7.4 inches)86%low
December Weather6°C (43°F)187 mm (7.4 inches)87%low

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