Key West weather live forecast

Today's maximum temperature in Key West is expected to be 90°F. Select a day from the live weather forecast for Key West, Florida, USA for more weather parameters.

5-day weather forecast updated at 04:00 on Friday 15th August 2025 GMT

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The 5-day weather forecast for Florida (Key West) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Key West weather forecast by day

Below are the detailed weather forecasts for Key West for the next 5 days.

Key West weather for Friday 15th August 2025

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and a gentle breeze of 9 mph from the east.

  • 90°F maximum temperature90
    °F maximum temperature
  • 84°F minimum temperature84
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 26% chance of some rain26
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 9 mph from the East9
    mph wind from E

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Key West weather for Saturday 16th August 2025

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 56% chance of some rain and a gentle breeze of 9 mph from the east.

  • 90°F maximum temperature90
    °F maximum temperature
  • 82°F minimum temperature82
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 56% chance of some rain56
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 9 mph from the East9
    mph wind from E

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Key West weather for Sunday 17th August 2025

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 11 (Extreme) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a gentle breeze of 9 mph from the east.

  • 90°F maximum temperature90
    °F maximum temperature
  • 82°F minimum temperature82
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 30% chance of some rain30
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 9 mph from the East9
    mph wind from E

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Key West weather for Monday 18th August 2025

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 91°F, high levels of heat & humidity, maximum UV of 11 (Extreme) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 37% chance of some rain and a light breeze of 7 mph from the east.

  • 91°F maximum temperature91
    °F maximum temperature
  • 82°F minimum temperature82
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 37% chance of some rain37
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Light breeze of 7 mph from the East7
    mph wind from E

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Key West weather for Tuesday 19th August 2025

Expect isolated thunderstorms in Key West, Florida with a maximum temperature of 91°F, high levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 47% chance of some rain and a gentle breeze of 9 mph from the north-west.

  • 91°F maximum temperature91
    °F maximum temperature
  • 82°F minimum temperature82
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 47% chance of some rain47
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 9 mph from the North-West9
    mph wind from NW

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  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
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