National Weather Service United States Department of Commerce

Oppressive heat and humidity building into the central and southeast U.S.

A heat wave is building into parts of the central and southeast U.S. this week. The combination of heat and humidity will lead to dangerous heat indices, especially in parts of the central Mississippi River Valley where an Excessive Heat Warning is in effect. Heat Advisories are in effect elsewhere across the region. Relief is not expected for several days.
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Current Conditions

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Key West FL

7 Day Forecast

For More Weather Information:

Key West, FL Local Forecast Office

Overnight

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 82 °F

Thursday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 91 °F

Thursday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 84 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 90 °F

Friday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 83 °F

Saturday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 90 °F

Saturday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 83 °F

Sunday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 90 °F

Sunday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 83 °F

Detailed Forecast

  • Overnight A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 20%.
  • Thursday A chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 91. East wind 5 to 10 mph. Chance of precipitation is 30%.
  • Thursday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 84. East wind 5 to 10 mph. Chance of precipitation is 20%.
  • Friday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. East wind around 5 mph. Chance of precipitation is 20%.
  • Friday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 20%.
  • Saturday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
  • Saturday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 20%.
  • Sunday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
  • Sunday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 20%.
  • Monday A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
  • Monday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 83. Chance of precipitation is 30%.
  • Tuesday A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 30%.
  • Tuesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 83. Chance of precipitation is 30%.
  • Wednesday A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.