September Weather in Parker, United States

Last updated: June 24, 2025

In September, the average temperature in Parker, United States is a pleasant 19°C (66°F). During this time, you can expect temperatures to range from a chilly -3°C (27°F) at their lowest to a warm 35°C (96°F) at their peak. With an average precipitation of 30 mm (1.2 in) over about 5 days, and humidity levels hovering around 79%, it’s a season that beautifully balances warmth and moisture.

September Temperature in Parker

In September in Parker, the average temperature is 19°C (66°F), with maximums reaching up to 35°C (96°F) and minimums dropping as low as -3°C (27°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm and cool weather clothing.

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

The chart illustrates September temperature patterns in Parker, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Parker, September typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (96°F) and lows dropping to around -3°C (27°F).

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

September Precipitation in Parker

In Parker in September, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.

September Precipitation Trends in Parker

The chart displays monthly precipitation patterns in Parker, 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 Parker, September typically receives around 30 mm (1.2 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 Parker

In Parker in September humidity is 79%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making it feel much warmer than the actual temperature and creating a heavy, sticky atmosphere that can be a bit uncomfortable for traveling.

September Average Humidity in Parker

This chart illustrates the average monthly humidity levels in Parker, 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 Parker is approximately 79%, 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 Parker

In Parker 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 Parker.

Maximum UV Index Levels in Parker for September

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

Data source: Parker 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 Parker Compares to Other Months

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

This table compares monthly weather conditions in Parker, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	18 mm (0.7 inches)	74%	moderate
February Weather	-2°C (29°F)	19 mm (0.8 inches)	75%	moderate
March Weather	4°C (39°F)	59 mm (2.3 inches)	66%	very high
April Weather	8°C (46°F)	41 mm (1.6 inches)	62%	very high
May Weather	13°C (55°F)	97 mm (3.8 inches)	74%	extreme
June Weather	20°C (68°F)	46 mm (1.8 inches)	76%	extreme
July Weather	23°C (73°F)	57 mm (2.2 inches)	75%	extreme
August Weather	22°C (72°F)	38 mm (1.5 inches)	80%	extreme
September Weather	19°C (66°F)	30 mm (1.2 inches)	79%	very high
October Weather	9°C (48°F)	27 mm (1.1 inches)	77%	high
November Weather	4°C (40°F)	18 mm (0.7 inches)	74%	moderate
December Weather	1°C (33°F)	9 mm (0.3 inches)	80%	moderate