September Weather in Walhalla, United States

Last updated: June 24, 2025

In Walhalla, United States during September, the average temperature hovers around 14°C (57°F). Expect a wide range, with minimums dipping to -3°C (27°F) and maximums soaring to 34°C (94°F). Precipitation averages 77 mm (3.0 in) over about 9 days, complemented by an average humidity of 73%. Stay prepared for a mix of weather while enjoying the unique charm of the month!

September Temperature in Walhalla

In September in Walhalla, the average temperature is 14°C (57°F). Maximum temperatures can reach as high as 34°C (94°F), while the minimum can drop to as low as -3°C (27°F). Be prepared for a wide range of temperatures when traveling, and pack accordingly!

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

The chart illustrates September temperature patterns in Walhalla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walhalla, September typically has an average temperature of 14°C (57°F), with highs reaching up to 34°C (94°F) and lows dropping to around -3°C (27°F).

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

September Precipitation in Walhalla

In Walhalla in September, the precipitation amount is 77 mm (3.0 in) over the course of 9 days.

September Precipitation Trends in Walhalla

The chart displays monthly precipitation patterns in Walhalla, 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 Walhalla, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 9 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 Walhalla

In Walhalla in September, humidity is 73%. With an average temperature of 14°C (57°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but potentially uncomfortable for extended periods. Travelers should stay hydrated and take breaks in shaded areas to fully appreciate the vibrant surroundings.

September Average Humidity in Walhalla

This chart illustrates the average monthly humidity levels in Walhalla, 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 Walhalla is approximately 73%, 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 Walhalla

In Walhalla in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Walhalla.

Maximum UV Index Levels in Walhalla for September

The chart shows the monthly maximum UV Index (UVI) for Walhalla 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 Walhalla typically reaches 7, which falls under the high exposure category.

Data source: Walhalla 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 Walhalla Compares to Other Months

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

This table compares monthly weather conditions in Walhalla, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-13°C (9°F)	17 mm (0.7 inches)	92%	low
February Weather	-14°C (7°F)	17 mm (0.7 inches)	90%	moderate
March Weather	-4°C (25°F)	19 mm (0.7 inches)	88%	moderate
April Weather	3°C (37°F)	27 mm (1.1 inches)	81%	high
May Weather	12°C (54°F)	54 mm (2.1 inches)	74%	very high
June Weather	19°C (66°F)	72 mm (2.8 inches)	72%	very high
July Weather	21°C (70°F)	53 mm (2.1 inches)	74%	very high
August Weather	19°C (67°F)	58 mm (2.3 inches)	76%	very high
September Weather	14°C (57°F)	77 mm (3.0 inches)	73%	high
October Weather	5°C (42°F)	68 mm (2.7 inches)	76%	moderate
November Weather	-4°C (25°F)	28 mm (1.1 inches)	86%	low
December Weather	-9°C (16°F)	27 mm (1.1 inches)	91%	low