September Weather in Havre de Grace, United States

Last updated: June 24, 2025

In September, the average temperature in Havre de Grace, United States hovers around 22°C (72°F), but be prepared for a minimum of 9°C (48°F) and a maximum of 33°C (91°F). With an average humidity of 75%, the atmosphere can feel quite warm. Expect about 94 mm (3.7 in) of precipitation spread over 10 days, so don’t forget your umbrella!

September Temperature in Havre de Grace

In September in Havre de Grace, the average temperature is 22°C (72°F), with maximums reaching up to 33°C (91°F) and minimums dipping as low as 9°C (48°F). It's a great time to visit for travelers seeking mild weather and a pleasant climate.

September Weather in Havre de Grace: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Havre de Grace, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Havre de Grace, September typically has an average temperature of 22°C (72°F), with highs reaching up to 33°C (91°F) and lows dropping to around 9°C (48°F).

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

September Precipitation in Havre de Grace

In Havre de Grace in September, the precipitation amount is 94 mm (3.7 in) over a duration of 10 days.

September Precipitation Trends in Havre de Grace

The chart displays monthly precipitation patterns in Havre de Grace, 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 Havre de Grace, September typically receives around 94 mm (3.7 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 Havre de Grace

In Havre de Grace in September, humidity is 75%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet requiring travelers to stay hydrated and take breaks in shaded areas.

September Average Humidity in Havre de Grace

This chart illustrates the average monthly humidity levels in Havre de Grace, 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 Havre de Grace 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 Havre de Grace

In Havre de Grace 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 Havre de Grace.

Maximum UV Index Levels in Havre de Grace for September

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

Data source: Havre de Grace 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 Havre de Grace Compares to Other Months

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

This table compares monthly weather conditions in Havre de Grace, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	60 mm (2.4 inches)	84%	moderate
February Weather	4°C (40°F)	97 mm (3.8 inches)	83%	moderate
March Weather	7°C (45°F)	97 mm (3.8 inches)	83%	high
April Weather	13°C (56°F)	100 mm (3.9 inches)	81%	very high
May Weather	18°C (65°F)	134 mm (5.3 inches)	78%	very high
June Weather	24°C (75°F)	96 mm (3.8 inches)	79%	very high
July Weather	27°C (80°F)	129 mm (5.1 inches)	74%	very high
August Weather	25°C (78°F)	133 mm (5.2 inches)	72%	very high
September Weather	22°C (72°F)	94 mm (3.7 inches)	75%	very high
October Weather	17°C (62°F)	104 mm (4.1 inches)	81%	high
November Weather	9°C (48°F)	81 mm (3.2 inches)	85%	moderate
December Weather	5°C (41°F)	98 mm (3.9 inches)	84%	moderate