October Weather in Rancho San Diego, United States

Last updated: June 24, 2025

In Rancho San Diego, United States, the average temperature in October hovers around 20°C (68°F). Temperatures can swing from a cool 9°C (48°F) to a scorching 38°C (100°F). Expect a modest precipitation of 14 mm (0.6 in) over about 2 days, contributing to an average humidity level of 58%. Enjoy the diverse climate that October brings!

October Temperature in Rancho San Diego

In October in Rancho San Diego, the average temperature is 20°C (68°F). Maximum temperatures can reach 38°C (100°F), while minimums can drop to as low as 9°C (48°F). Be prepared for a range of temperatures and pack appropriately for a comfortable travel experience.

October Weather in Rancho San Diego: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Rancho San Diego, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rancho San Diego, October typically has an average temperature of 20°C (68°F), with highs reaching up to 38°C (100°F) and lows dropping to around 9°C (48°F).

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

October Precipitation in Rancho San Diego

In Rancho San Diego in October, the precipitation amount is 14 mm (0.6 in) over a period of 2 days.

October Precipitation Trends in Rancho San Diego

The chart displays monthly precipitation patterns in Rancho San Diego, 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 Rancho San Diego, October typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 2 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Rancho San Diego

In Rancho San Diego in October humidity is 58%. With an average temperature of 20°C (68°F), this humidity feels like a refreshing embrace, creating a comfortable atmosphere for exploring the local sights and enjoying leisurely walks outdoors.

October Average Humidity in Rancho San Diego

This chart illustrates the average monthly humidity levels in Rancho San Diego, 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 Rancho San Diego 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 Rancho San Diego

In Rancho San Diego 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 Rancho San Diego.

Maximum UV Index Levels in Rancho San Diego for October

The chart shows the monthly maximum UV Index (UVI) for Rancho San Diego 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 Rancho San Diego typically reaches 7, which falls under the high exposure category.

Data source: Rancho San Diego 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 Rancho San Diego Compares to Other Months

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

This table compares monthly weather conditions in Rancho San Diego, 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 (56°F)	56 mm (2.2 inches)	72%	moderate
February Weather	13°C (56°F)	68 mm (2.7 inches)	77%	high
March Weather	14°C (57°F)	51 mm (2.0 inches)	67%	very high
April Weather	16°C (61°F)	24 mm (0.9 inches)	56%	very high
May Weather	17°C (63°F)	21 mm (0.8 inches)	46%	extreme
June Weather	19°C (67°F)	2 mm (0.1 inches)	48%	extreme
July Weather	22°C (72°F)	3 mm (0.1 inches)	46%	extreme
August Weather	23°C (74°F)	1 mm (0.1 inches)	42%	very high
September Weather	22°C (72°F)	4 mm (0.1 inches)	52%	very high
October Weather	20°C (68°F)	14 mm (0.6 inches)	58%	high
November Weather	17°C (62°F)	29 mm (1.1 inches)	66%	moderate
December Weather	14°C (57°F)	65 mm (2.5 inches)	74%	moderate