October Weather in Castroville, United States

Last updated: June 24, 2025

In Castroville, United States, the average temperature in October hovers around 23°C (73°F), offering a pleasant climate. However, be prepared for temperature fluctuations, as it can dip to a cool 3°C (38°F) or soar as high as 38°C (100°F). Expect around 69 mm (2.7 in) of precipitation over the course of 9 days, contributing to an average humidity level of 74%. Ideal for those who enjoy a blend of warm days and refreshing showers!

October Temperature in Castroville

In October in Castroville, the average temperature is 23°C (73°F), with maximums reaching up to 38°C (100°F) and minimums dropping as low as 3°C (38°F). This variability in temperature makes it essential for travelers to pack accordingly for both warm days and cooler nights.

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

The chart illustrates October temperature patterns in Castroville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castroville, October typically has an average temperature of 23°C (73°F), with highs reaching up to 38°C (100°F) and lows dropping to around 3°C (38°F).

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

October Precipitation in Castroville

In Castroville in October, the precipitation amount is 69 mm (2.7 in) spread over 9 days.

October Precipitation Trends in Castroville

The chart displays monthly precipitation patterns in Castroville, 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 Castroville, October typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 9 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 Castroville

In Castroville in October humidity is 74%. With an average temperature of 23°C (73°F), this humidity feels like walking through a warm, enveloping fog, making outdoor activities more strenuous and requiring frequent breaks for hydration.

October Average Humidity in Castroville

This chart illustrates the average monthly humidity levels in Castroville, 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 Castroville is approximately 74%, 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 Castroville

In Castroville in October, 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 Castroville.

Maximum UV Index Levels in Castroville for October

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

Data source: Castroville 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 Castroville Compares to Other Months

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

This table compares monthly weather conditions in Castroville, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	34 mm (1.3 inches)	79%	moderate
February Weather	13°C (57°F)	47 mm (1.8 inches)	79%	very high
March Weather	19°C (66°F)	50 mm (2.0 inches)	74%	very high
April Weather	22°C (72°F)	61 mm (2.4 inches)	76%	extreme
May Weather	26°C (79°F)	109 mm (4.3 inches)	81%	extreme
June Weather	29°C (84°F)	58 mm (2.3 inches)	76%	extreme
July Weather	30°C (86°F)	52 mm (2.0 inches)	66%	extreme
August Weather	31°C (87°F)	40 mm (1.6 inches)	58%	extreme
September Weather	28°C (82°F)	106 mm (4.2 inches)	65%	extreme
October Weather	23°C (73°F)	69 mm (2.7 inches)	74%	very high
November Weather	17°C (62°F)	40 mm (1.6 inches)	81%	high
December Weather	14°C (57°F)	46 mm (1.8 inches)	86%	moderate