October Weather in Algonquin, United States

Last updated: June 24, 2025

In October, the average temperature in Algonquin, United States is a pleasant 18°C (65°F). Expect a range of 6°C (42°F) to 31°C (88°F) throughout the month. With an average humidity of 81%, you might want to pack a light jacket for the cooler evenings. Be prepared for some rain, as 118 mm (4.7 in) of precipitation is expected over 8 days.

October Temperature in Algonquin

In October in Algonquin, the average temperature is 18°C (65°F). Maximums can reach 31°C (88°F) and minimums can be as low as 6°C (42°F). This fluctuating climate makes Algonquin an ideal destination for travelers looking to experience a variety of outdoor activities in comfortable weather.

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

The chart illustrates October temperature patterns in Algonquin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Algonquin, October typically has an average temperature of 18°C (65°F), with highs reaching up to 31°C (88°F) and lows dropping to around 6°C (42°F).

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

October Precipitation in Algonquin

In Algonquin in October, the precipitation amount is 118 mm (4.7 in) over the course of 8 days.

October Precipitation Trends in Algonquin

The chart displays monthly precipitation patterns in Algonquin, 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 Algonquin, October typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 8 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 Algonquin

In Algonquin in October, humidity is 81%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick and sultry—a challenging environment for traveling.

October Average Humidity in Algonquin

This chart illustrates the average monthly humidity levels in Algonquin, 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 Algonquin is approximately 81%, 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 Algonquin

In Algonquin 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 Algonquin.

Maximum UV Index Levels in Algonquin for October

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

Data source: Algonquin 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 Algonquin Compares to Other Months

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

This table compares monthly weather conditions in Algonquin, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	68 mm (2.7 inches)	84%	moderate
February Weather	5°C (42°F)	101 mm (4.0 inches)	83%	moderate
March Weather	8°C (47°F)	88 mm (3.5 inches)	83%	high
April Weather	14°C (57°F)	86 mm (3.4 inches)	81%	very high
May Weather	19°C (66°F)	115 mm (4.5 inches)	78%	very high
June Weather	24°C (75°F)	90 mm (3.5 inches)	79%	very high
July Weather	27°C (81°F)	136 mm (5.4 inches)	74%	very high
August Weather	26°C (79°F)	148 mm (5.8 inches)	72%	very high
September Weather	23°C (74°F)	99 mm (3.9 inches)	75%	very high
October Weather	18°C (65°F)	118 mm (4.7 inches)	81%	high
November Weather	10°C (51°F)	86 mm (3.4 inches)	85%	moderate
December Weather	6°C (44°F)	100 mm (3.9 inches)	84%	moderate