October Weather in McLean, United States

Last updated: June 24, 2025

In October, the average temperature in McLean, United States is a comfortable 15°C (59°F), but don't be caught off guard by extremes—lows can dip to -5°C (22°F) while highs may reach a sizzling 35°C (96°F). Expect about 69 mm (2.7 in) of precipitation over 6 days, contributing to an average humidity of 73%—perfect for those who enjoy a lush, green environment!

October Temperature in McLean

In October in McLean, the average temperature is 15°C (59°F). Maximums can reach 35°C (96°F), while minimums can drop as low as -5°C (22°F). Be prepared for a wide range of temperatures when traveling to McLean during this time.

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

The chart illustrates October temperature patterns in McLean, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McLean, October typically has an average temperature of 15°C (59°F), with highs reaching up to 35°C (96°F) and lows dropping to around -5°C (22°F).

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

October Precipitation in McLean

In McLean in October, the precipitation amount is 69 mm (2.7 in) over a period of 6 days.

October Precipitation Trends in McLean

The chart displays monthly precipitation patterns in McLean, 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 McLean, October typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 6 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 McLean

In McLean in October humidity is 73%. With an average temperature of 15°C (59°F), this humidity feels like a mild discomfort, making sightseeing a bit sticky and requiring travelers to stay hydrated and take breaks in the shade.

October Average Humidity in McLean

This chart illustrates the average monthly humidity levels in McLean, 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 McLean is approximately 73%, 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 McLean

In McLean 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 McLean.

Maximum UV Index Levels in McLean for October

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

Data source: McLean 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 McLean Compares to Other Months

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

This table compares monthly weather conditions in McLean, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	23 mm (0.9 inches)	75%	moderate
February Weather	4°C (39°F)	15 mm (0.6 inches)	76%	high
March Weather	11°C (51°F)	59 mm (2.3 inches)	64%	very high
April Weather	14°C (58°F)	36 mm (1.4 inches)	70%	very high
May Weather	20°C (68°F)	82 mm (3.2 inches)	78%	extreme
June Weather	25°C (77°F)	59 mm (2.3 inches)	81%	extreme
July Weather	27°C (81°F)	36 mm (1.4 inches)	82%	extreme
August Weather	26°C (79°F)	43 mm (1.7 inches)	78%	extreme
September Weather	23°C (73°F)	50 mm (2.0 inches)	72%	very high
October Weather	15°C (59°F)	69 mm (2.7 inches)	73%	high
November Weather	9°C (49°F)	14 mm (0.5 inches)	80%	moderate
December Weather	6°C (42°F)	23 mm (0.9 inches)	81%	moderate