FPUS52 KKEY 171405 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 1005 AM EDT Tue Mar 17 2026 FLZ076>078-172100- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 1005 AM EDT Tue Mar 17 2026 .THIS AFTERNOON...Cloudy with a chance of showers. Becoming breezy. Highs in the mid 70s. Northwest to north winds 10 to 15 mph, becoming north to northeast 15 to 20 mph. Chance of rain 40 percent. .TONIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Breezy. Lows in the mid 60s. North to northeast winds 15 to 20 mph. Chance of rain 30 percent. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Breezy at times. Highs in the mid 70s. North to northeast winds 15 to 20 mph, briefly decreasing to near 15 mph in the afternoon. Chance of rain 40 percent. .WEDNESDAY NIGHT...Cloudy with a chance of showers and a slight chance of thunderstorms. Breezy, becoming windy. Lows in the upper 60s. North to northeast winds 15 to 20 mph, increasing to near 20 mph. Chance of rain 50 percent. .THURSDAY...Mostly cloudy with a chance of showers. Windy, becoming breezy. Highs in the mid 70s. North to northeast winds near 20 mph, decreasing to 15 to 20 mph. Chance of rain 30 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Breezy. A slight chance of showers. Lows in the mid 60s. Chance of rain 20 percent. .FRIDAY...Partly sunny with a slight chance of showers. Breezy in the morning. Highs in the mid 70s. Chance of rain 20 percent. .FRIDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the upper 60s. Highs in the upper 70s. .MONDAY...Mostly sunny with a slight chance of showers. Highs in the upper 70s. Chance of rain 10 percent. $$