October Weather in Keys, United States

Last updated: June 24, 2025

The average temperature in Keys, United States during October is a pleasant 17°C (62°F). Temperatures can vary, with minimums dipping to -1°C (30°F) and maximums soaring up to 33°C (91°F). You'll want to be prepared for some rain, as the area receives approximately 153 mm (6.0 in) of precipitation over 11 days. Additionally, the average humidity hovers around 71%, making the air feel quite comfortable.

October Temperature in Keys

In October in Keys, the average temperature is 17°C (62°F), with maximums reaching 33°C (91°F) and minimums dropping as low as -1°C (30°F). This range makes it essential for travelers to pack both warm and light clothing to accommodate the varied weather conditions.

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

The chart illustrates October temperature patterns in Keys, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Keys, October typically has an average temperature of 17°C (62°F), with highs reaching up to 33°C (91°F) and lows dropping to around -1°C (30°F).

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

October Precipitation in Keys

In Keys in October, the total precipitation amount is 153 mm (6.0 in) over the course of 11 days.

October Precipitation Trends in Keys

The chart displays monthly precipitation patterns in Keys, 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 Keys, October typically receives around 153 mm (6.0 inches) of precipitation spread over approximately 11 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 Keys

In Keys in October, humidity is 71%. With an average temperature of 17°C (62°F), this humidity feels like a warm embrace that can leave you feeling a bit sticky, making outdoor exploration both refreshing and slightly uncomfortable.

October Average Humidity in Keys

This chart illustrates the average monthly humidity levels in Keys, 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 Keys is approximately 71%, 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 Keys

In Keys 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 Keys.

Maximum UV Index Levels in Keys for October

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

Data source: Keys 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 Keys Compares to Other Months

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

This table compares monthly weather conditions in Keys, 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 (40°F)	89 mm (3.5 inches)	79%	moderate
February Weather	6°C (42°F)	100 mm (4.0 inches)	78%	high
March Weather	12°C (54°F)	134 mm (5.3 inches)	75%	high
April Weather	15°C (59°F)	158 mm (6.2 inches)	75%	very high
May Weather	21°C (69°F)	212 mm (8.3 inches)	83%	very high
June Weather	26°C (78°F)	78 mm (3.1 inches)	81%	extreme
July Weather	28°C (82°F)	105 mm (4.1 inches)	78%	extreme
August Weather	26°C (80°F)	129 mm (5.1 inches)	68%	very high
September Weather	24°C (76°F)	78 mm (3.1 inches)	64%	very high
October Weather	17°C (62°F)	153 mm (6.0 inches)	71%	high
November Weather	10°C (50°F)	66 mm (2.6 inches)	82%	moderate
December Weather	7°C (45°F)	83 mm (3.3 inches)	87%	moderate