September Weather in Chestertown, United States

Last updated: June 24, 2025

In September, the average temperature in Chestertown, United States hovers around 22°C (73°F), providing a pleasant climate. Expect temperatures to range from a cool 10°C (50°F) to a warm 33°C (92°F). During this period, precipitation averages 96 mm (3.8 in) over 10 days, contributing to the area's lushness, while humidity remains around 75%, adding a touch of tropical feel to the atmosphere.

September Temperature in Chestertown

In September in Chestertown, the average temperature is 22°C (73°F). Maximums can reach 33°C (92°F), and minimums can be as low as 10°C (50°F). This pleasant climate makes Chestertown an ideal destination for travelers seeking a comfortable getaway.

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

The chart illustrates September temperature patterns in Chestertown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chestertown, September typically has an average temperature of 22°C (73°F), with highs reaching up to 33°C (92°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Chestertown

In Chestertown in September, the total precipitation amount is 96 mm (3.8 in) over a span of 10 days.

September Precipitation Trends in Chestertown

The chart displays monthly precipitation patterns in Chestertown, 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 Chestertown, September typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Chestertown

In Chestertown in September humidity is 75%. With an average temperature of 22°C (73°F), this humidity feels like a warm, enveloping embrace, making it essential for travelers to stay hydrated and wear light, breathable clothing to enjoy their adventures comfortably.

September Average Humidity in Chestertown

This chart illustrates the average monthly humidity levels in Chestertown, 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 Chestertown is approximately 75%, 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 Chestertown

In Chestertown 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 Chestertown.

Maximum UV Index Levels in Chestertown for September

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

Data source: Chestertown 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 Chestertown Compares to Other Months

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

This table compares monthly weather conditions in Chestertown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (37°F)	64 mm (2.5 inches)	84%	moderate
February Weather	5°C (40°F)	107 mm (4.2 inches)	83%	moderate
March Weather	8°C (46°F)	97 mm (3.8 inches)	83%	high
April Weather	13°C (56°F)	102 mm (4.0 inches)	81%	very high
May Weather	19°C (66°F)	133 mm (5.2 inches)	78%	very high
June Weather	24°C (75°F)	98 mm (3.8 inches)	79%	very high
July Weather	27°C (80°F)	139 mm (5.5 inches)	74%	very high
August Weather	26°C (78°F)	156 mm (6.2 inches)	72%	very high
September Weather	22°C (73°F)	96 mm (3.8 inches)	75%	very high
October Weather	17°C (63°F)	116 mm (4.6 inches)	81%	high
November Weather	9°C (49°F)	82 mm (3.2 inches)	85%	moderate
December Weather	5°C (42°F)	103 mm (4.0 inches)	84%	moderate