September Weather in McCormick, United States

Last updated: June 24, 2025

In September, the average temperature in McCormick, United States hovers around 25°C (77°F), with a range that can dip to a chilly 11°C (52°F) and soar up to a sweltering 36°C (98°F). Expect about 82 mm (3.2 in) of precipitation over 7 days, contributing to an overall average humidity of 83%. Whether you're bracing for warmth or rain, this month offers a dynamic mix of weather!

September Temperature in McCormick

In September in McCormick, the average temperature is 25°C (77°F). Maximum temperatures can reach 36°C (98°F), while minimums can dip as low as 11°C (52°F). Overall, it is a great time to visit McCormick for warm weather adventures while being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in McCormick, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McCormick, September typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (98°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in McCormick

In McCormick in September, the precipitation amount is 82 mm (3.2 in) over the course of 7 days.

September Precipitation Trends in McCormick

The chart displays monthly precipitation patterns in McCormick, 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 McCormick, September typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 7 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 McCormick

In McCormick in September humidity is 83%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket, making it essential for travelers to stay hydrated and seek shade to enjoy their adventures comfortably.

September Average Humidity in McCormick

This chart illustrates the average monthly humidity levels in McCormick, 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 McCormick is approximately 83%, 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 McCormick

In McCormick in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in McCormick.

Maximum UV Index Levels in McCormick for September

The chart shows the monthly maximum UV Index (UVI) for McCormick 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 McCormick typically reaches 9, which falls under the very high exposure category.

Data source: McCormick 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 McCormick Compares to Other Months

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

This table compares monthly weather conditions in McCormick, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	100 mm (4.0 inches)	86%	moderate
February Weather	11°C (53°F)	119 mm (4.7 inches)	81%	high
March Weather	14°C (57°F)	90 mm (3.6 inches)	81%	very high
April Weather	18°C (64°F)	107 mm (4.2 inches)	79%	very high
May Weather	23°C (73°F)	114 mm (4.5 inches)	75%	extreme
June Weather	26°C (78°F)	90 mm (3.6 inches)	75%	extreme
July Weather	27°C (82°F)	106 mm (4.2 inches)	80%	extreme
August Weather	27°C (81°F)	124 mm (4.9 inches)	81%	very high
September Weather	25°C (77°F)	82 mm (3.2 inches)	83%	very high
October Weather	20°C (68°F)	92 mm (3.6 inches)	78%	very high
November Weather	12°C (55°F)	89 mm (3.5 inches)	85%	high
December Weather	10°C (50°F)	115 mm (4.5 inches)	87%	moderate