September Weather in Marne, United States

Last updated: June 24, 2025

In September, the average temperature in Marne, United States hovers around 20°C (69°F). Temperatures can swing between a minimum of 4°C (40°F) and a maximum of 35°C (95°F). Expect approximately 101 mm (4.0 in) of precipitation over 9 days, with an average humidity level of 73%.

September Temperature in Marne

In September in Marne, the average temperature is 20°C (69°F). Maximums can reach 35°C (95°F), and minimums can be as low as 4°C (40°F). This weather makes Marne an ideal destination for travelers seeking both warmth and cool, refreshing evenings.

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

The chart illustrates September temperature patterns in Marne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marne, September typically has an average temperature of 20°C (69°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (40°F).

Data source: Temperature data for Marne generated using information from the Copernicus Climate Change Service.

September Precipitation in Marne

In Marne in September, the total precipitation amount is 101 mm (4.0 in), occurring over a span of 9 days.

September Precipitation Trends in Marne

The chart displays monthly precipitation patterns in Marne, 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 Marne, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Marne

In Marne in September humidity is 73%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making travel slightly sticky but ultimately comfortable as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Marne

This chart illustrates the average monthly humidity levels in Marne, 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 Marne is approximately 73%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Marne

In Marne 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 Marne.

Maximum UV Index Levels in Marne for September

The chart shows the monthly maximum UV Index (UVI) for Marne 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 Marne typically reaches 8, which falls under the very high exposure category.

Data source: Marne 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 Marne Compares to Other Months

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

This table compares monthly weather conditions in Marne, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	88 mm (3.5 inches)	88%	moderate
February Weather	2°C (35°F)	112 mm (4.4 inches)	88%	moderate
March Weather	6°C (43°F)	114 mm (4.5 inches)	88%	high
April Weather	11°C (52°F)	129 mm (5.1 inches)	86%	very high
May Weather	17°C (64°F)	133 mm (5.3 inches)	82%	very high
June Weather	22°C (72°F)	157 mm (6.2 inches)	84%	very high
July Weather	24°C (76°F)	122 mm (4.8 inches)	82%	very high
August Weather	23°C (74°F)	98 mm (3.8 inches)	73%	very high
September Weather	20°C (69°F)	101 mm (4.0 inches)	73%	very high
October Weather	14°C (58°F)	103 mm (4.1 inches)	81%	high
November Weather	6°C (42°F)	99 mm (3.9 inches)	89%	moderate
December Weather	3°C (37°F)	105 mm (4.1 inches)	86%	moderate