September Weather in Fillmore, United States

Last updated: June 24, 2025

In September, the average temperature in Fillmore, United States is a comfortable 17°C (62°F). However, you can experience a range from a chilly 1°C (33°F) to a warm 31°C (88°F). Prepare for some wet weather as the region sees about 75 mm (2.9 in) of precipitation spread over 9 days, with an average humidity level of 76%. Stay hydrated and enjoy the varied climate!

September Temperature in Fillmore

In September in Fillmore, the average temperature is 17°C (62°F). The maximum can reach 31°C (88°F), while the minimum can drop as low as 1°C (33°F). This makes it a great time for travelers to experience a range of weather conditions, so be sure to pack accordingly!

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

The chart illustrates September temperature patterns in Fillmore, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fillmore, September typically has an average temperature of 17°C (62°F), with highs reaching up to 31°C (88°F) and lows dropping to around 1°C (33°F).

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

September Precipitation in Fillmore

In Fillmore, in September, the precipitation amount is 75 mm (2.9 in) spread over the course of 9 days.

September Precipitation Trends in Fillmore

The chart displays monthly precipitation patterns in Fillmore, 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 Fillmore, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 9 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 Fillmore

In Fillmore in September, humidity is 76%. With an average temperature of 17°C (62°F), this humidity feels like a warm, enveloping embrace, making travel feel slightly more challenging as it can lead to a sticky discomfort, especially during outdoor excursions.

September Average Humidity in Fillmore

This chart illustrates the average monthly humidity levels in Fillmore, 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 Fillmore is approximately 76%, 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 Fillmore

In Fillmore in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Fillmore.

Maximum UV Index Levels in Fillmore for September

The chart shows the monthly maximum UV Index (UVI) for Fillmore 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 Fillmore typically reaches 8, which falls under the very high exposure category.

Data source: Fillmore 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 Fillmore Compares to Other Months

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

This table compares monthly weather conditions in Fillmore, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	80 mm (3.2 inches)	91%	moderate
February Weather	-3°C (27°F)	90 mm (3.6 inches)	91%	moderate
March Weather	1°C (34°F)	79 mm (3.1 inches)	88%	high
April Weather	7°C (44°F)	112 mm (4.4 inches)	88%	very high
May Weather	14°C (57°F)	117 mm (4.6 inches)	82%	very high
June Weather	18°C (65°F)	100 mm (3.9 inches)	79%	very high
July Weather	21°C (70°F)	133 mm (5.2 inches)	77%	very high
August Weather	20°C (68°F)	95 mm (3.8 inches)	72%	very high
September Weather	17°C (62°F)	75 mm (2.9 inches)	76%	very high
October Weather	11°C (52°F)	134 mm (5.3 inches)	83%	high
November Weather	3°C (37°F)	91 mm (3.6 inches)	88%	moderate
December Weather	-1°C (30°F)	94 mm (3.7 inches)	87%	low