Whats the temperature in key west florida

Q: What is the coldest month in Key West Florida?

Key Wests coldest month is January when the average temperature overnight is 65.2°F. In August, the warmest month, the average day time temperature rises to 89.5°F.

The numbers here tell you how hot and cold the weather usually is in Key West, Florida during each month of the year.

Table of Contents Show

Days of Hot Weather in Key West
Number of Warm Nights a Month
What is the best month to go to Key West?
What is the coldest month in Key West Florida?
How cold is it in the Florida Keys right now?
What's the weather like in the Keys right now?

The average high and low temperatures are listed below by month and annually for Key West, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in Key West, scroll down farther. There are also monthly and yearly counts of nights with warm temperatures.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Key West, 2010 to 2019High °FLow °F High °CLow °C7565January24187768February25207869March26208374April28238577May30258880June31268981July32279081August32278880September31278577October30258172November27227869December26218374Year2824

30-year temperature averages for Key West, 1991 to 2020High °FLow °F High °CLow °C7666January24197767February25208069March26218373April28238676May30258979June32269081July32279181August33278979September32268677October30258172November27227868December25208474Year2923

Days of Hot Weather in Key West

It's not normal for the temperature to rise above 100 °F (38 °C) in Key West. But it does climb into the 90s for much of July and August. Even during winter months, Key West usually has many days of 80-degree weather.

Days per month in Key West of at least 70, 80 or 90 °F 70 °F
21 °C80 °F
27 °C90 °F
32 °CJanuary2680February25110March29170April30250May31301June30307July313118August313120September303010October31301November30200December28130Year35227457

Number of Warm Nights a Month

Nights at Key West are consistently warm, staying above 50 °F nearly throughout the year. From June to September, the temperature normally never gets any colder than 70 degrees.

A slight chance of showers. Mostly sunny, with a high near 82. South wind around 5 mph. Chance of precipitation is 10%.

A slight chance of showers, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 74. South wind 5 to 10 mph. Chance of precipitation is 60%.

Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 80. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 60%.

A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. East wind around 5 mph. Chance of precipitation is 50%.

A chance of showers and thunderstorms. Partly sunny, with a high near 80. East wind around 5 mph. Chance of precipitation is 50%.

A chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.

A chance of showers, mainly before 8am. Partly sunny, with a high near 77. Chance of precipitation is 50%.

The following chart reports what the hourly Key West, FL temperature has been today, from 2:00 AM to 4:45 PM Thu, Dec 15th 2022. The lowest temperature reading has been 77 degrees fahrenheit at 5:50 AM, while the highest temperature is 82.4 degrees fahrenheit at 1:50 PM.

The time period when the sun is no more than 6 degrees below the horizon at either sunrise or sunset. The horizon should be clearly defined and the brightest stars should be visible under good atmospheric conditions (i.e. no moonlight, or other lights). One still should be able to carry on ordinary outdoor activities.

The time period when the sun is between 6 and 12 degrees below the horizon at either sunrise or sunset. The horizon is well defined and the outline of objects might be visible without artificial light. Ordinary outdoor activities are not possible at this time without extra illumination.

The time period when the sun is between 12 and 18 degrees below the horizon at either sunrise or sunset. The sun does not contribute to the illumination of the sky before this time in the morning, or after this time in the evening. In the beginning of morning astronomical twilight and at the end of astronomical twilight in the evening, sky illumination is very faint, and might be undetectable.

The time of Civil Sunset minus the time of Civil Sunrise.

The time of Actual Sunset minus the time of Actual Sunrise. The change in length of daylight between today and tomorrow is also listed when available.

Increasing cloudiness. Showers likely with a slight chance of thunderstorms. Lows in the mid 70s. South winds near 10 mph becoming southwest to west and decreasing to 5 to 10 mph. Chance of rain 60 percent.

What is the best month to go to Key West?

The best time to visit Key West is between March and May. The winter crowds will taper off, the hotel rates become reasonable and the weather is remarkably similar to winter's blissful 70s and 80s. Speaking of winter – that season is the island's busiest and priciest.

What is the coldest month in Key West Florida?

Key West's coldest month is January when the average temperature overnight is 65.2°F. In August, the warmest month, the average day time temperature rises to 89.5°F.