September Weather in Grunthal, Canada

Last updated: June 18, 2025

In September, the average temperature in Grunthal, Canada hovers around 14°C (57°F), with a range that can dip to a chilly -3°C (27°F) or soar to a warm 32°C (91°F). Expect about 90 mm (3.5 in) of precipitation over 11 days, contributing to an average humidity level of 75%. Whether you're planning activities or exploring local sights, be prepared for a variety of weather conditions!

September Temperature in Grunthal

In September in Grunthal, the average temperature is 14°C (57°F). The maximum can reach 32°C (91°F) and the minimum can be as low as -3°C (27°F). Be prepared for a wide range of temperatures when traveling to Grunthal during this month.

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

The chart illustrates September temperature patterns in Grunthal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grunthal, September typically has an average temperature of 14°C (57°F), with highs reaching up to 32°C (91°F) and lows dropping to around -3°C (27°F).

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

September Precipitation in Grunthal

In Grunthal in September, the total precipitation amounts to 90 mm (3.5 in) over the course of 11 days.

September Precipitation Trends in Grunthal

The chart displays monthly precipitation patterns in Grunthal, 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 Grunthal, September typically receives around 90 mm (3.5 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 Grunthal

In Grunthal in September, humidity is 75%. With an average temperature of 14°C (57°F), this humidity feels like a damp blanket enveloping you, making outdoor activities somewhat uncomfortable and travel a bit sluggish, as the air feels heavy and the heat lingers close to your skin.

September Average Humidity in Grunthal

This chart illustrates the average monthly humidity levels in Grunthal, 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 Grunthal 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 Grunthal

In Grunthal 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 Grunthal.

Maximum UV Index Levels in Grunthal for September

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

Data source: Grunthal 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 Grunthal Compares to Other Months

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

This table compares monthly weather conditions in Grunthal, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-14°C (7°F)	18 mm (0.7 inches)	94%	low
February Weather	-15°C (5°F)	18 mm (0.7 inches)	91%	moderate
March Weather	-5°C (23°F)	19 mm (0.7 inches)	90%	moderate
April Weather	2°C (37°F)	30 mm (1.2 inches)	81%	high
May Weather	12°C (54°F)	39 mm (1.5 inches)	74%	very high
June Weather	19°C (66°F)	70 mm (2.8 inches)	75%	very high
July Weather	21°C (70°F)	81 mm (3.2 inches)	74%	very high
August Weather	19°C (66°F)	61 mm (2.4 inches)	77%	very high
September Weather	14°C (57°F)	90 mm (3.5 inches)	75%	high
October Weather	5°C (41°F)	70 mm (2.8 inches)	78%	moderate
November Weather	-5°C (24°F)	29 mm (1.2 inches)	87%	low
December Weather	-11°C (13°F)	27 mm (1.1 inches)	93%	low