September Weather in Hays, United States

Last updated: June 24, 2025

In September, the average temperature in Hays, United States hovers around 21°C (71°F). Temperatures can vary significantly, with a minimum of 5°C (41°F) and peaking at a scorching 35°C (94°F). Expect 130 mm (5.1 in) of precipitation spread over 11 days, accompanied by an average humidity level of 68%.

September Temperature in Hays

In September in Hays, the average temperature is 21°C (71°F). Maximum temperatures can reach 35°C (94°F), while the minimum can drop to as low as 5°C (41°F). This diverse temperature range makes Hays an ideal destination for travelers seeking both warmth and cooler breezy evenings.

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

The chart illustrates September temperature patterns in Hays, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hays, September typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (94°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in Hays

In Hays in September, the total precipitation amount is 130 mm (5.1 in) occurring over 11 days.

September Precipitation Trends in Hays

The chart displays monthly precipitation patterns in Hays, 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 Hays, September typically receives around 130 mm (5.1 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 Hays

In Hays in September, humidity is 68%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making traveling a bit sticky but also inviting for leisurely strolls and outdoor adventures.

September Average Humidity in Hays

This chart illustrates the average monthly humidity levels in Hays, 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 Hays is approximately 68%, 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 Hays

In Hays 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 Hays.

Maximum UV Index Levels in Hays for September

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

Data source: Hays 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 Hays Compares to Other Months

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

This table compares monthly weather conditions in Hays, 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 (39°F)	88 mm (3.4 inches)	87%	moderate
February Weather	7°C (45°F)	119 mm (4.7 inches)	87%	high
March Weather	10°C (50°F)	89 mm (3.5 inches)	86%	very high
April Weather	14°C (58°F)	138 mm (5.4 inches)	84%	very high
May Weather	19°C (66°F)	134 mm (5.3 inches)	83%	extreme
June Weather	22°C (73°F)	93 mm (3.7 inches)	83%	extreme
July Weather	25°C (77°F)	80 mm (3.1 inches)	79%	extreme
August Weather	24°C (75°F)	104 mm (4.1 inches)	66%	very high
September Weather	21°C (71°F)	130 mm (5.1 inches)	68%	very high
October Weather	16°C (61°F)	138 mm (5.4 inches)	78%	very high
November Weather	8°C (47°F)	84 mm (3.3 inches)	89%	moderate
December Weather	6°C (43°F)	110 mm (4.3 inches)	86%	moderate