September Weather in Garrett, United States

Last updated: June 24, 2025

In September, the average temperature in Garrett, United States hovers around 20°C (68°F), making it a pleasant time to visit. However, be prepared for a temperature range with minimums dipping to 4°C (39°F) and highs soaring to 33°C (91°F). Expect a fair share of rain as well, with 66 mm (2.6 in) of precipitation spread over about 7 days. Don't forget, the average humidity is on the higher side at 78%, adding a touch of tropical feel to your experience!

September Temperature in Garrett

In September in Garrett, the average temperature is 20°C (68°F). Maximums can reach 33°C (91°F) and minimums can be as low as 4°C (39°F). This makes Garrett a great destination for travelers looking to enjoy a mild climate with a variety of temperature experiences.

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

The chart illustrates September temperature patterns in Garrett, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Garrett, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (91°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Garrett

In Garrett in September, the precipitation amount is 66 mm (2.6 in) over a period of 7 days.

September Precipitation Trends in Garrett

The chart displays monthly precipitation patterns in Garrett, 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 Garrett, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 7 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 Garrett

In Garrett in September humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.

September Average Humidity in Garrett

This chart illustrates the average monthly humidity levels in Garrett, 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 Garrett is approximately 78%, 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 Garrett

In Garrett 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 Garrett.

Maximum UV Index Levels in Garrett for September

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

Data source: Garrett 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 Garrett Compares to Other Months

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

This table compares monthly weather conditions in Garrett, 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 (28°F)	73 mm (2.9 inches)	85%	moderate
February Weather	-1°C (30°F)	77 mm (3.0 inches)	85%	moderate
March Weather	4°C (40°F)	101 mm (4.0 inches)	86%	high
April Weather	9°C (49°F)	98 mm (3.9 inches)	87%	very high
May Weather	16°C (62°F)	128 mm (5.1 inches)	81%	very high
June Weather	22°C (72°F)	122 mm (4.8 inches)	82%	very high
July Weather	24°C (76°F)	106 mm (4.2 inches)	81%	very high
August Weather	23°C (73°F)	101 mm (4.0 inches)	79%	very high
September Weather	20°C (68°F)	66 mm (2.6 inches)	78%	very high
October Weather	13°C (56°F)	108 mm (4.3 inches)	81%	high
November Weather	5°C (41°F)	82 mm (3.2 inches)	89%	moderate
December Weather	1°C (34°F)	60 mm (2.4 inches)	86%	low