Key West Weather in October

October is the month that Key West, Florida is most likely to experience a tropical storm or hurricane. Yet on average, the weather is drier now than in previous months.

This page gives detailed information on the typical October temperature, precipitation, sun, humidity, wind and storms for Key West. The numbers here are historical averages based on climate data gathered at the Key West International Airport, located on Key West Island.

Temperature Weather iconTemperature

86 °F October average high 30 °C
77 °F October average low 25 °C
30 days 80 °F max. or more (27 °C)
1 day 70 °F min. or less (21 °C)

Nearly every October day is over 80 degrees Fahrenheit (26 degrees Celsius) in Key West. The vacation island averages a day or two in in October that heats up into the 90s °F (above 32 °C).

At night the thermometer seldom drops below 70 °F (21 °C). And nights here are not expected to get down to 60 °F (16 °C)

Rainy Weather iconRain

5.7 in total precipitation 144 mm
12 days of rain

Half the time, Key West receives 2.3 to 7.2 inches (59 to 184 mm) of rainfall in October. One in four years has drier weather, while another one in four is wetter.

Sunny Weather iconSun

71 % sunshine
9 days clear skies

The sun's rays reach the ground in Key West during 71 percent of daylight hours on average in October, for a total of 255 hours in the month. Typically on 9 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in October at Key West lasts for 11 hours and 33 minutes a day on average. The longest day of the month is the 1st with 11 hours and 55 minutes of daylight. By the end of the month, the days have shortened to 11:14 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

75 % October average humidity

The relative humidity in Key West during October usually peaks at 81 percent in the morning then drops to 68 percent by early afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 79 81 81 72 69 68 75 77

Windy Weather iconWind

10.8 mph October wind speed average 17.4 kph

October is an average month for wind at Key West.

Stormy Weather iconStorms

3 days rainfall of 0.5 inches (13 mm) or more
4 days with thunderstorms in October
20 % chance a named storm approaches

There's a 10 percent probability that a hurricane will approach within 100 miles (165 km) of Key West during October. The chance of a major category 3 to 5 hurricane reaching the area is 2 percent.


The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals. The named storm probabilities come from the Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division.

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