September Weather in Gratz, United States

Last updated: June 24, 2025

In Gratz, United States, the average temperature in September hovers around 20°C (69°F). Expect a range, with minimums dipping to 4°C (40°F) and maximums soaring up to 34°C (93°F). This month also brings 117 mm (4.6 in) of precipitation spread over 9 days, contributing to an average humidity level of 66%. Enjoy this vibrant blend of warmth and moisture!

September Temperature in Gratz

In September in Gratz, the average temperature is a pleasant 20°C (69°F). Maximum temperatures can reach as high as 34°C (93°F), while the minimum can dip down to 4°C (40°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while being prepared for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Gratz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gratz, September typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (93°F) and lows dropping to around 4°C (40°F).

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

September Precipitation in Gratz

In Gratz in September, the total precipitation amount is 117 mm (4.6 in) spread over a period of 9 days.

September Precipitation Trends in Gratz

The chart displays monthly precipitation patterns in Gratz, 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 Gratz, September typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 9 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 Gratz

In Gratz in September humidity is 66%. With an average temperature of 20°C (69°F), this humidity feels like a gentle enveloping warmth, making it comfortable for traveling but with a slight stickiness that may encourage you to seek shade or refreshments frequently.

September Average Humidity in Gratz

This chart illustrates the average monthly humidity levels in Gratz, 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 Gratz is approximately 66%, 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 Gratz

In Gratz 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 Gratz.

Maximum UV Index Levels in Gratz for September

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

Data source: Gratz 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 Gratz Compares to Other Months

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

This table compares monthly weather conditions in Gratz, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	71 mm (2.8 inches)	87%	moderate
February Weather	2°C (35°F)	103 mm (4.0 inches)	85%	moderate
March Weather	5°C (42°F)	94 mm (3.7 inches)	85%	high
April Weather	11°C (52°F)	106 mm (4.2 inches)	83%	very high
May Weather	17°C (63°F)	123 mm (4.8 inches)	75%	very high
June Weather	22°C (72°F)	93 mm (3.7 inches)	73%	very high
July Weather	25°C (77°F)	135 mm (5.3 inches)	65%	very high
August Weather	24°C (75°F)	121 mm (4.8 inches)	62%	very high
September Weather	20°C (69°F)	117 mm (4.6 inches)	66%	very high
October Weather	14°C (58°F)	110 mm (4.3 inches)	79%	high
November Weather	6°C (44°F)	93 mm (3.6 inches)	87%	moderate
December Weather	2°C (37°F)	89 mm (3.5 inches)	85%	low