September Weather in Coulterville, United States

Last updated: June 24, 2025

In September, the average temperature in Coulterville, United States hovers around 23°C (73°F). However, temperatures can vary widely, with a minimum of 8°C (47°F) and a maximum reaching 35°C (95°F). Expect an average precipitation of 64 mm (2.5 in) over about 7 days, accompanied by a pleasantly high humidity level of 79%.

September Temperature in Coulterville

In September in Coulterville, the average temperature is 23°C (73°F), with maximums possibly reaching 35°C (95°F) and minimums dropping as low as 8°C (47°F). It's a great time to enjoy a variety of outdoor activities, so pack accordingly for both the warm days and cooler evenings!

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

The chart illustrates September temperature patterns in Coulterville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Coulterville, September typically has an average temperature of 23°C (73°F), with highs reaching up to 35°C (95°F) and lows dropping to around 8°C (47°F).

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

September Precipitation in Coulterville

In Coulterville in September, the precipitation amount is 64 mm (2.5 in) accumulated over a period of 7 days.

September Precipitation Trends in Coulterville

The chart displays monthly precipitation patterns in Coulterville, 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 Coulterville, September typically receives around 64 mm (2.5 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 Coulterville

In Coulterville in September humidity is 79%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace that clings to the skin, making travel feel both invigorating and slightly exhausting as the air wraps around you like a damp blanket.

September Average Humidity in Coulterville

This chart illustrates the average monthly humidity levels in Coulterville, 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 Coulterville 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 Coulterville

In Coulterville 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 Coulterville.

Maximum UV Index Levels in Coulterville for September

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

Data source: Coulterville 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 Coulterville Compares to Other Months

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

This table compares monthly weather conditions in Coulterville, 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 (34°F)	88 mm (3.5 inches)	84%	moderate
February Weather	3°C (37°F)	101 mm (4.0 inches)	82%	moderate
March Weather	9°C (48°F)	142 mm (5.6 inches)	84%	high
April Weather	13°C (57°F)	137 mm (5.4 inches)	83%	very high
May Weather	20°C (69°F)	164 mm (6.5 inches)	80%	extreme
June Weather	25°C (78°F)	94 mm (3.7 inches)	83%	extreme
July Weather	27°C (81°F)	90 mm (3.6 inches)	82%	very high
August Weather	25°C (77°F)	110 mm (4.3 inches)	82%	very high
September Weather	23°C (73°F)	64 mm (2.5 inches)	79%	very high
October Weather	16°C (60°F)	121 mm (4.8 inches)	79%	high
November Weather	7°C (45°F)	85 mm (3.4 inches)	88%	moderate
December Weather	5°C (40°F)	79 mm (3.1 inches)	87%	moderate