September Weather in Winters, United States

Last updated: June 24, 2025

In September, the average temperature in Winters, United States hovers around 25°C (77°F). However, temperatures can fluctuate significantly, with a minimum of 7°C (44°F) and soaring up to a maximum of 39°C (102°F). Expect some rain, as 71 mm (2.8 in) of precipitation typically occurs over 6 days. Additionally, the average humidity sits at a comfortable 67%, making it an interesting time to explore.

September Temperature in Winters

In September in Winters, the average temperature is 25°C (77°F). Maximums can reach 39°C (102°F), and minimums can drop as low as 7°C (44°F). This makes it a great time to visit for those who enjoy warm days and cool evenings.

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

The chart illustrates September temperature patterns in Winters, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Winters, September typically has an average temperature of 25°C (77°F), with highs reaching up to 39°C (102°F) and lows dropping to around 7°C (44°F).

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

September Precipitation in Winters

In Winters in September, the precipitation amount is 71 mm (2.8 in) over a span of 6 days.

September Precipitation Trends in Winters

The chart displays monthly precipitation patterns in Winters, 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 Winters, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 6 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 Winters

In Winters in September, humidity is 67%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, heavy blanket, making outdoor activities feel more strenuous and sticky than usual.

September Average Humidity in Winters

This chart illustrates the average monthly humidity levels in Winters, 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 Winters is approximately 67%, 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 Winters

In Winters in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Winters.

Maximum UV Index Levels in Winters for September

The chart shows the monthly maximum UV Index (UVI) for Winters 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 Winters typically reaches 11, which falls under the extreme exposure category.

Data source: Winters 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 Winters Compares to Other Months

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

This table compares monthly weather conditions in Winters, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (46°F)	29 mm (1.2 inches)	74%	moderate
February Weather	9°C (48°F)	25 mm (1.0 inches)	74%	high
March Weather	15°C (60°F)	62 mm (2.4 inches)	68%	very high
April Weather	18°C (66°F)	57 mm (2.2 inches)	70%	extreme
May Weather	24°C (75°F)	83 mm (3.3 inches)	77%	extreme
June Weather	28°C (82°F)	44 mm (1.7 inches)	76%	extreme
July Weather	29°C (85°F)	23 mm (0.9 inches)	66%	extreme
August Weather	29°C (84°F)	45 mm (1.8 inches)	60%	extreme
September Weather	25°C (77°F)	71 mm (2.8 inches)	67%	extreme
October Weather	19°C (67°F)	76 mm (3.0 inches)	72%	very high
November Weather	13°C (56°F)	23 mm (0.9 inches)	83%	high
December Weather	10°C (50°F)	28 mm (1.1 inches)	85%	moderate