September Weather in Maricopa, United States

Last updated: June 24, 2025

In Maricopa, United States, the average temperature in September reaches a warm 31°C (88°F). While the minimum dips to a cool 12°C (54°F), the heat can soar to a sizzling 45°C (113°F). Expect some moisture with an average precipitation of 21 mm (0.8 in) over 3 days and a comfortable average humidity of 64%.

September Temperature in Maricopa

In September in Maricopa, the average temperature is 31°C (88°F). Maximums can reach 45°C (113°F), and minimums can be as low as 12°C (54°F). Travelers should be prepared for hot days and cooler nights, making layering essential for comfort.

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

The chart illustrates September temperature patterns in Maricopa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Maricopa, September typically has an average temperature of 31°C (88°F), with highs reaching up to 45°C (113°F) and lows dropping to around 12°C (54°F).

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

September Precipitation in Maricopa

In Maricopa in September, the precipitation amount is 21 mm (0.8 in) over a period of 3 days.

September Precipitation Trends in Maricopa

The chart displays monthly precipitation patterns in Maricopa, 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 Maricopa, September typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 3 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Maricopa

In Maricopa in September humidity is 64%. With an average temperature of 31°C (88°F), this humidity feels like a warm, enveloping blanket, making outdoor activities more challenging and creating a thirst for refreshing drinks as you navigate the sights.

September Average Humidity in Maricopa

This chart illustrates the average monthly humidity levels in Maricopa, 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 Maricopa is approximately 64%, 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 Maricopa

In Maricopa 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 Maricopa.

Maximum UV Index Levels in Maricopa for September

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

Data source: Maricopa 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 Maricopa Compares to Other Months

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

This table compares monthly weather conditions in Maricopa, 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 (55°F)	18 mm (0.7 inches)	76%	moderate
February Weather	14°C (58°F)	30 mm (1.2 inches)	79%	high
March Weather	18°C (65°F)	20 mm (0.8 inches)	67%	very high
April Weather	24°C (75°F)	1 mm (0.0 inches)	55%	extreme
May Weather	27°C (81°F)	2 mm (0.1 inches)	40%	extreme
June Weather	33°C (91°F)	7 mm (0.3 inches)	33%	extreme
July Weather	34°C (94°F)	48 mm (1.9 inches)	34%	extreme
August Weather	34°C (93°F)	43 mm (1.7 inches)	48%	extreme
September Weather	31°C (88°F)	21 mm (0.8 inches)	64%	very high
October Weather	24°C (76°F)	16 mm (0.6 inches)	67%	very high
November Weather	19°C (66°F)	12 mm (0.5 inches)	77%	moderate
December Weather	13°C (55°F)	22 mm (0.9 inches)	82%	moderate