Area Forecast Discussion
Issued by NWS Key West, FL
Issued by NWS Key West, FL
914 FXUS62 KKEY 061540 AFDKEY Area Forecast Discussion National Weather Service Key West FL 1040 AM EST Sat Dec 6 2025 ...New DISCUSSION, MARINE, AVIATION... .KEY MESSAGES... -Mainly light to gentle southeast breezes expected through the weekend. -A weak cloudline could develop later today. -Moisture increases tonight through Monday ahead of a possible frontal system early next week. -Humidity will also continue to rise with dew points reaching potentially the upper 70s for Sunday. && .DISCUSSION... Issued at 1040 AM EST Sat Dec 6 2025 A quiet morning is underway across the Florida Keys. KBYX detects a few shallow precipitable echos drifting lazily to the northwest through the Straits of Florida. These showers are associated with a few lines of fair weather cumulus viewable from GOES-19 visible imagery. Otherwise, the island chain is fairly cloud free. Further up north, layers of cumulus and stratocumulus can be seen streaming over Florida`s Big Bend associated with a cold front slowly sagging south over the state. Central and South Florida`s morning fog has mostly dissipated with a patch still visibile over Lake Okeechobee. This is all to say that basically all the different sensible weather events are keeping north of the Keys for now. Not too much change is expected in the short term. Similar to yesterday, current temperatures along the island chain are already near 80 with unfortunate dewpoints in the lower to mid 70s. Breezes have increased a touch from earlier this morning with gentle east to southeast breezes now seen along the Reef. This surge is expected to be fairly brief as we still reside in a col region with light and variable breezes expected to return later this afternoon. This morning`s KKEY 12z balloon sounding still has the veering to southwest winds in the low levels, but has dried out from yesterday evening. Regardless, this low level wind profile with winds becoming light and variable may allow for a few showers near the island chain this afternoon. Thus, no changes to the forecast are required at this time. && .MARINE... Issued at 1040 AM EST Sat Dec 6 2025 No watches, warnings, or advisories are currently in effect for the coastal waters of the Florida Keys. From synopsis, the Florida Keys will lie in a col region today through Sunday. This will promote mainly light to gentle southeast breezes, occasionally becoming variable. Thereafter, a developing weather system will move out of the Central Plains and into the Southeast U.S. by Sunday evening. The attendent cold front will sweep through Monday night with a brief period of moderate to fresh breezes. Shower coverage will steadily increase starting today and continuing into early next week. && .AVIATION... (15Z TAFS) Issued at 1040 AM EST Sat Dec 6 2025 VFR conditions are expected to prevail at both EYW and MTH today. While a passing shallow shower may be possible this afternoon, low chances and coverage will keep mention out of either TAF for now. Near surface winds will start out of the east to southeast at 5 to 10 knots, becoming light and variable later this afternoon. && .CLIMATE... On this day In 2016, the daily record high temperature of 88F was recorded at the Florida Keys Marathon International Airport. This measurement tied the record for the warmest temperature recorded in December. Temperature data for Marathon dates back to 1950. && .PRELIMINARY POINT TEMPS/POPS... Key West 83 74 83 73 / 10 20 30 40 Marathon 82 74 82 74 / 10 20 20 40 && .KEY WATCHES/WARNINGS/ADVISORIES... FL...None. GM...None. && $$ Public/Marine/Fire...JAM Aviation/Nowcasts....JAM Data Acquisition.....JAM Visit us on the web at weather.gov/key Follow us on Facebook and Twitter at: www.facebook.com/nwskeywest www.twitter.com/nwskeywest