October Weather in Fallbrook, United States

Last updated: June 24, 2025

In October, the average temperature in Fallbrook, United States hovers around 20°C (69°F), providing a comfortable climate. Expect a minimum of 8°C (47°F) and soaring to a maximum of 38°C (100°F) during the day. Precipitation is light, with an average of 11 mm (0.4 in) falling over just 2 days, while the humidity lingers around 58%, keeping the air pleasantly comfortable.

October Temperature in Fallbrook

In October in Fallbrook, the average temperature is 20°C (69°F). Maximum temperatures can reach 38°C (100°F), while minimums can dip as low as 8°C (47°F). This makes it a great time for travelers to enjoy both warm days and cooler evenings.

October Weather in Fallbrook: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Fallbrook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fallbrook, October typically has an average temperature of 20°C (69°F), with highs reaching up to 38°C (100°F) and lows dropping to around 8°C (47°F).

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

October Precipitation in Fallbrook

In Fallbrook in October, the precipitation amount is 11 mm (0.4 in) over the course of 2 days.

October Precipitation Trends in Fallbrook

The chart displays monthly precipitation patterns in Fallbrook, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Fallbrook, October typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 2 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Fallbrook

In Fallbrook in October humidity is 58%. With an average temperature of 20°C (69°F), this humidity feels like a refreshing balmy embrace, making it quite pleasant for traveling as long as you stay hydrated and take occasional breaks in the shade.

October Average Humidity in Fallbrook

This chart illustrates the average monthly humidity levels in Fallbrook, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Fallbrook is approximately 58%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Fallbrook

In Fallbrook in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Fallbrook.

Maximum UV Index Levels in Fallbrook for October

The chart shows the monthly maximum UV Index (UVI) for Fallbrook in October, 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 October, the maximum UV index in Fallbrook typically reaches 7, which falls under the high exposure category.

Data source: Fallbrook October 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 October Weather in Fallbrook Compares to Other Months

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

This table compares monthly weather conditions in Fallbrook, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	66 mm (2.6 inches)	72%	moderate
February Weather	13°C (55°F)	64 mm (2.5 inches)	77%	high
March Weather	14°C (57°F)	67 mm (2.6 inches)	67%	very high
April Weather	17°C (62°F)	31 mm (1.2 inches)	56%	very high
May Weather	18°C (64°F)	19 mm (0.8 inches)	46%	extreme
June Weather	21°C (70°F)	3 mm (0.1 inches)	48%	extreme
July Weather	25°C (77°F)	4 mm (0.2 inches)	46%	extreme
August Weather	25°C (77°F)	3 mm (0.1 inches)	42%	extreme
September Weather	24°C (75°F)	4 mm (0.2 inches)	52%	very high
October Weather	20°C (69°F)	11 mm (0.4 inches)	58%	high
November Weather	17°C (62°F)	28 mm (1.1 inches)	66%	moderate
December Weather	13°C (55°F)	66 mm (2.6 inches)	74%	moderate