570 FPUS52 KKEY 302056 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 356 PM EST Tue Dec 30 2025 FLZ077-078-311100- Monroe Middle Keys-Monroe Lower Keys- Including the communities of Marathon and Key West 356 PM EST Tue Dec 30 2025 .TONIGHT...Mostly clear. Breezy. Cooler and less humid. Lows in the mid to upper 50s. Northwest to north winds 15 to 20 mph, becoming north. .WEDNESDAY...Mostly sunny. Breezy early. Highs in the lower to mid 60s. Northwest to north winds 15 to 20 mph, decreasing to 10 to 15 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid to upper 50s. Northwest to north winds 10 to 15 mph. .NEW YEARS DAY...Mostly sunny. Highs in the upper 60s. North winds near 10 mph, decreasing to 5 to 10 mph. .THURSDAY NIGHT...Mostly clear. Lows near 60. North winds 5 to 10 mph. .FRIDAY...Mostly clear. Highs in the lower 70s. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows in the mid 60s. Highs in the mid 70s. .SUNDAY THROUGH TUESDAY...Mostly clear. Highs in the mid 70s. Lows in the upper 60s. $$ FLZ076-311100- Monroe Upper Keys- Including the communities of Key Largo 356 PM EST Tue Dec 30 2025 .TONIGHT...Mostly clear. Becoming breezy. Much colder with lows in the upper 40s to near 50. Northwest to north winds 10 to 15 mph early, increasing to 15 to 20 mph. .WEDNESDAY...Mostly sunny. Breezy early. Highs in the lower to mid 60s. Northwest to north winds 15 to 20 mph, decreasing to near 10 mph. .WEDNESDAY NIGHT...Mostly clear. Cold with lows 45 to 50. Northwest to north winds near 10 mph. .NEW YEARS DAY...Mostly sunny. Highs in the upper 60s. Northwest to north winds near 10 mph, decreasing to 5 to 10 mph. .FRIDAY...Mostly clear. Highs in the lower 70s. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows in the lower 60s. Highs in the mid 70s. .SATURDAY NIGHT THROUGH TUESDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 70s. $$