October Weather in Arroyo Grande, United States

Last updated: June 24, 2025

In Arroyo Grande, United States, the average temperature in October hovers around 17°C (63°F), with a minimum of 9°C (48°F) and a maximum reaching 32°C (90°F). Expect a light sprinkle of 10 mm (0.4 in) of precipitation over 0 days, while the average humidity sits comfortably at 70%.

October Temperature in Arroyo Grande

In October in Arroyo Grande, the average temperature is 17°C (63°F). The maximum can reach 32°C (90°F), and the minimum can be as low as 9°C (48°F). This diverse temperature range makes Arroyo Grande an ideal destination for travelers seeking both warm days and cooler evenings.

October Weather in Arroyo Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Arroyo Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arroyo Grande, October typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around 9°C (48°F).

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

October Precipitation in Arroyo Grande

In Arroyo Grande in October, the precipitation amount is 10 mm (0.4 in) during a total of 0 days.

October Precipitation Trends in Arroyo Grande

The chart displays monthly precipitation patterns in Arroyo Grande, 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 Arroyo Grande, October typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 0 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 Arroyo Grande

In Arroyo Grande in October humidity is 70%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making travel both refreshing and slightly sticky, as you navigate the air thick with moisture.

October Average Humidity in Arroyo Grande

This chart illustrates the average monthly humidity levels in Arroyo Grande, 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 Arroyo Grande is approximately 70%, 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 Arroyo Grande

In Arroyo Grande 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 Arroyo Grande.

Maximum UV Index Levels in Arroyo Grande for October

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

Data source: Arroyo Grande 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 Arroyo Grande Compares to Other Months

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

This table compares monthly weather conditions in Arroyo Grande, 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)	100 mm (3.9 inches)	80%	moderate
February Weather	12°C (53°F)	81 mm (3.2 inches)	83%	high
March Weather	12°C (54°F)	88 mm (3.5 inches)	80%	very high
April Weather	13°C (57°F)	24 mm (1.0 inches)	76%	very high
May Weather	14°C (58°F)	12 mm (0.5 inches)	75%	extreme
June Weather	16°C (61°F)	2 mm (0.1 inches)	74%	extreme
July Weather	18°C (64°F)	1 mm (0.0 inches)	75%	extreme
August Weather	18°C (65°F)	1 mm (0.0 inches)	72%	extreme
September Weather	18°C (64°F)	1 mm (0.1 inches)	70%	very high
October Weather	17°C (63°F)	10 mm (0.4 inches)	70%	high
November Weather	14°C (58°F)	33 mm (1.3 inches)	74%	moderate
December Weather	12°C (54°F)	72 mm (2.8 inches)	76%	moderate