September Weather in Hardin, United States

Last updated: June 24, 2025

In September, the average temperature in Hardin, United States is a pleasant 17°C (63°F), making it an ideal time to explore the area. However, be prepared for a temperature range that can dip as low as 1°C (35°F) or soar to 38°C (101°F). During this month, you'll also experience about 40 mm (1.6 in) of precipitation spread over 5 days, contributing to an average humidity level of 76%.

September Temperature in Hardin

In September in Hardin, the average temperature is 17°C (63°F). The maximum can reach 38°C (101°F), and the minimum can be as low as 1°C (35°F). Be prepared for varying temperatures, making it ideal to pack layers for your travels.

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

The chart illustrates September temperature patterns in Hardin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hardin, September typically has an average temperature of 17°C (63°F), with highs reaching up to 38°C (101°F) and lows dropping to around 1°C (35°F).

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

September Precipitation in Hardin

In Hardin in September, the precipitation amount is 40 mm (1.6 in) over the course of 5 days.

September Precipitation Trends in Hardin

The chart displays monthly precipitation patterns in Hardin, 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 Hardin, September typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 5 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 Hardin

In Hardin in September humidity is 76%. With an average temperature of 17°C (63°F), this humidity feels like traveling through a warm, enveloping blanket, making every outdoor adventure feel sticky and heavy, yet pleasantly refreshing when you find a cool breeze.

September Average Humidity in Hardin

This chart illustrates the average monthly humidity levels in Hardin, 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 Hardin is approximately 76%, 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 Hardin

In Hardin 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 Hardin.

Maximum UV Index Levels in Hardin for September

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

Data source: Hardin 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 Hardin Compares to Other Months

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

This table compares monthly weather conditions in Hardin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	19 mm (0.8 inches)	85%	low
February Weather	-7°C (19°F)	38 mm (1.5 inches)	85%	moderate
March Weather	2°C (35°F)	33 mm (1.3 inches)	79%	moderate
April Weather	6°C (44°F)	62 mm (2.4 inches)	74%	very high
May Weather	13°C (56°F)	58 mm (2.3 inches)	76%	very high
June Weather	20°C (68°F)	45 mm (1.8 inches)	79%	very high
July Weather	24°C (76°F)	24 mm (0.9 inches)	81%	very high
August Weather	23°C (73°F)	19 mm (0.8 inches)	80%	very high
September Weather	17°C (63°F)	40 mm (1.6 inches)	76%	very high
October Weather	8°C (46°F)	40 mm (1.6 inches)	74%	moderate
November Weather	2°C (36°F)	25 mm (1.0 inches)	81%	moderate
December Weather	-2°C (28°F)	29 mm (1.1 inches)	87%	low