October Weather in Chico, United States

Last updated: June 24, 2025

In October, the average temperature in Chico, United States hovers around 18°C (65°F). This pleasant climate can experience fluctuations, with minimums dipping to 4°C (40°F) and occasionally soaring to a maximum of 37°C (99°F). During this time, expect 53 mm (2.1 in) of precipitation over about 3 days, with an average humidity level of approximately 65%. Enjoy the variety while staying prepared for both warmth and refreshing showers!

October Temperature in Chico

In October in Chico, the average temperature is 18°C (65°F). Maximums can reach 37°C (99°F) and minimums can be as low as 4°C (40°F). Visitors should be prepared for a wide range of temperatures, making layering an essential part of their travel wardrobe.

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

The chart illustrates October temperature patterns in Chico, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chico, October typically has an average temperature of 18°C (65°F), with highs reaching up to 37°C (99°F) and lows dropping to around 4°C (40°F).

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

October Precipitation in Chico

In Chico in October, the precipitation amount is 53 mm (2.1 in) over the course of 3 days.

October Precipitation Trends in Chico

The chart displays monthly precipitation patterns in Chico, 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 Chico, October typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 3 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 Chico

In Chico in October, humidity is 65%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace that clings to your skin, making you feel slightly sticky as you explore. It's comfortable enough for sightseeing, but breathable enough to enjoy a leisurely stroll, though you might find yourself seeking shade during the warmest parts of the day.

October Average Humidity in Chico

This chart illustrates the average monthly humidity levels in Chico, 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 Chico is approximately 65%, 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 Chico

In Chico in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Chico, you can refer to this Hourly UV Index in Chico.

Maximum UV Index Levels in Chico for October

The chart shows the monthly maximum UV Index (UVI) for Chico 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 Chico typically reaches 6, which falls under the high exposure category.

Data source: Chico 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 Chico Compares to Other Months

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

This table compares monthly weather conditions in Chico, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	183 mm (7.2 inches)	84%	moderate
February Weather	10°C (51°F)	199 mm (7.8 inches)	84%	moderate
March Weather	12°C (54°F)	156 mm (6.2 inches)	83%	high
April Weather	16°C (61°F)	79 mm (3.1 inches)	81%	very high
May Weather	20°C (69°F)	47 mm (1.9 inches)	74%	very high
June Weather	26°C (79°F)	8 mm (0.3 inches)	64%	extreme
July Weather	29°C (85°F)	1 mm (0.0 inches)	44%	extreme
August Weather	28°C (83°F)	1 mm (0.0 inches)	36%	very high
September Weather	24°C (76°F)	8 mm (0.3 inches)	44%	very high
October Weather	18°C (65°F)	53 mm (2.1 inches)	65%	high
November Weather	12°C (55°F)	96 mm (3.8 inches)	84%	moderate
December Weather	9°C (48°F)	140 mm (5.5 inches)	83%	moderate