October Weather in Walnut, United States

Last updated: June 24, 2025

In October, the average temperature in Walnut, United States hovers around 11°C (52°F). Expect a temperature range with a minimum dipping to -7°C (20°F) and a maximum soaring to 31°C (88°F). During this month, precipitation totals about 128 mm (5.0 in) over 10 days, while the average humidity remains relatively high at 75%.

October Temperature in Walnut

In October in Walnut, the average temperature is 11°C (52°F). The maximum can reach 31°C (88°F), while the minimum can drop as low as -7°C (20°F). Be prepared for a wide range of temperatures when traveling during this month.

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

The chart illustrates October temperature patterns in Walnut, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walnut, October typically has an average temperature of 11°C (52°F), with highs reaching up to 31°C (88°F) and lows dropping to around -7°C (20°F).

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

October Precipitation in Walnut

In Walnut in October, the total precipitation amount is 128 mm (5.0 in) recorded over a span of 10 days.

October Precipitation Trends in Walnut

The chart displays monthly precipitation patterns in Walnut, 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 Walnut, October typically receives around 128 mm (5.0 inches) of precipitation spread over approximately 10 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 Walnut

In Walnut in October, humidity is 75%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a little less inviting and prompting the need for warm layers.

October Average Humidity in Walnut

This chart illustrates the average monthly humidity levels in Walnut, 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 Walnut is approximately 75%, 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 Walnut

In Walnut 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 Walnut, you can refer to this Hourly UV Index in Walnut.

Maximum UV Index Levels in Walnut for October

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

Data source: Walnut 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 Walnut Compares to Other Months

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

This table compares monthly weather conditions in Walnut, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	30 mm (1.2 inches)	76%	moderate
February Weather	-4°C (24°F)	36 mm (1.4 inches)	80%	moderate
March Weather	4°C (40°F)	86 mm (3.4 inches)	73%	high
April Weather	9°C (49°F)	57 mm (2.3 inches)	74%	very high
May Weather	17°C (62°F)	157 mm (6.2 inches)	78%	very high
June Weather	24°C (75°F)	109 mm (4.3 inches)	82%	extreme
July Weather	25°C (77°F)	68 mm (2.7 inches)	83%	very high
August Weather	23°C (74°F)	108 mm (4.3 inches)	80%	very high
September Weather	20°C (69°F)	98 mm (3.8 inches)	75%	very high
October Weather	11°C (52°F)	128 mm (5.0 inches)	75%	high
November Weather	4°C (39°F)	34 mm (1.3 inches)	82%	moderate
December Weather	-1°C (31°F)	36 mm (1.4 inches)	83%	moderate