September Weather in Garrison, United States

Last updated: June 24, 2025

In Garrison, United States, the average temperature in September is a warm 26°C (79°F). However, temperatures can vary significantly, with minimums dropping to 12°C (53°F) and maximums soaring to 38°C (102°F). Expect 117 mm (4.6 in) of precipitation spread over about 11 days, contributing to an average humidity level of 72%.

September Temperature in Garrison

In September in Garrison, the average temperature is 26°C (79°F). Maximum can reach 38°C (102°F) and minimum can be as low as 12°C (53°F). This climate makes Garrison a great destination for travelers seeking warm weather and diverse outdoor activities.

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

The chart illustrates September temperature patterns in Garrison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Garrison, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (102°F) and lows dropping to around 12°C (53°F).

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

September Precipitation in Garrison

In Garrison in September, the total precipitation amount reaches 117 mm (4.6 in) over the course of 11 days.

September Precipitation Trends in Garrison

The chart displays monthly precipitation patterns in Garrison, 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 Garrison, September typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 11 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 Garrison

In Garrison in September, humidity is 72%. With an average temperature of 26°C (79°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel a bit more strenuous but also adding a tropical charm to your travels.

September Average Humidity in Garrison

This chart illustrates the average monthly humidity levels in Garrison, 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 Garrison is approximately 72%, 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 Garrison

In Garrison 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 Garrison.

Maximum UV Index Levels in Garrison for September

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

Data source: Garrison 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 Garrison Compares to Other Months

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

This table compares monthly weather conditions in Garrison, 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 (50°F)	102 mm (4.0 inches)	81%	moderate
February Weather	11°C (53°F)	149 mm (5.9 inches)	81%	high
March Weather	17°C (62°F)	129 mm (5.1 inches)	79%	very high
April Weather	19°C (66°F)	157 mm (6.2 inches)	80%	very high
May Weather	24°C (75°F)	145 mm (5.7 inches)	81%	extreme
June Weather	27°C (81°F)	130 mm (5.1 inches)	76%	extreme
July Weather	28°C (83°F)	90 mm (3.5 inches)	73%	extreme
August Weather	29°C (84°F)	116 mm (4.6 inches)	71%	extreme
September Weather	26°C (79°F)	117 mm (4.6 inches)	72%	very high
October Weather	20°C (69°F)	109 mm (4.3 inches)	73%	very high
November Weather	14°C (58°F)	79 mm (3.1 inches)	83%	high
December Weather	12°C (54°F)	125 mm (4.9 inches)	88%	moderate