September Weather in Morgantown, United States

Last updated: June 24, 2025

In September, the average temperature in Morgantown, United States is a warm 26°C (79°F), with extremes ranging from a cool 11°C (53°F) to a sweltering 39°C (102°F). Expect about 125 mm (4.9 in) of precipitation, spread across 10 days, and consider the average humidity level of 79%, making it feel quite tropical!

September Temperature in Morgantown

In September in Morgantown, the average temperature is 26°C (79°F), with maximums reaching up to 39°C (102°F) and minimums dropping as low as 11°C (53°F). This warm climate makes it a perfect destination for travelers seeking a mix of sunny days and cooler evenings.

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

The chart illustrates September temperature patterns in Morgantown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Morgantown, September typically has an average temperature of 26°C (79°F), with highs reaching up to 39°C (102°F) and lows dropping to around 11°C (53°F).

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

September Precipitation in Morgantown

In Morgantown in September, the precipitation amount is 125 mm (4.9 in) spread over a period of 10 days.

September Precipitation Trends in Morgantown

The chart displays monthly precipitation patterns in Morgantown, 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 Morgantown, September typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 10 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 Morgantown

In Morgantown in September humidity is 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

September Average Humidity in Morgantown

This chart illustrates the average monthly humidity levels in Morgantown, 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 Morgantown is approximately 79%, 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 Morgantown

In Morgantown 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 Morgantown.

Maximum UV Index Levels in Morgantown for September

The chart shows the monthly maximum UV Index (UVI) for Morgantown 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 Morgantown typically reaches 10, which falls under the very high exposure category.

Data source: Morgantown 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 Morgantown Compares to Other Months

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

This table compares monthly weather conditions in Morgantown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (51°F)	114 mm (4.5 inches)	83%	moderate
February Weather	13°C (56°F)	133 mm (5.2 inches)	83%	high
March Weather	17°C (63°F)	113 mm (4.5 inches)	80%	very high
April Weather	19°C (66°F)	163 mm (6.4 inches)	81%	extreme
May Weather	24°C (75°F)	163 mm (6.4 inches)	81%	extreme
June Weather	26°C (80°F)	137 mm (5.4 inches)	78%	extreme
July Weather	28°C (82°F)	137 mm (5.4 inches)	79%	extreme
August Weather	28°C (82°F)	122 mm (4.8 inches)	79%	extreme
September Weather	26°C (79°F)	125 mm (4.9 inches)	79%	very high
October Weather	21°C (70°F)	114 mm (4.5 inches)	77%	very high
November Weather	14°C (57°F)	83 mm (3.3 inches)	85%	high
December Weather	12°C (54°F)	128 mm (5.0 inches)	88%	moderate