848
FNUS52 KKEY 300827
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
427 AM EDT Tue Sep 30 2025

.Discussion...
Moderate to occasionally fresh northwesterly breezes will continue
today. Breezes will gradually slacken this evening and continue
into Thursday. This will lead to dispersion indices gradually
becoming poor to fair. Rain and thunder chances will remain low
through Tuesday, then slowly creep back up to near normal. Despite
the mainly dry conditions, minimum relative humidity values will
remain well above 60%.

FLZ076>078-010030-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
427 AM EDT Tue Sep 30 2025

                      Today        Tonight      Wed

Cloud Cover           Mclear       Mclear       Mclear
Chance Precip (%)     20           30           30
Chance of Thunder (%) 20           20           20
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          89           77           89
Min/Max RH %          65           93           68
Wind 20ft AM (mph)    NW 12                     N  6
Wind 20ft PM (mph)    W 13         W 12         NW  6
Precip Duration       1            2            2
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.01         0.04         0.05
Mixing Hgt(ft-agl)    3600         1400         3200
Transport Wnd (mph)   W 17         NW 10        NW  8
Dispersion Index      41           16           23
Max LVORI             4            5            5

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. Southwest
winds around 5 mph.
.THURSDAY...Sunny with a chance of showers and a slight chance of
thunderstorms. Highs in the upper 80s. North winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. Northeast
winds around 10 mph.
.FRIDAY...Mostly sunny with a chance of showers and a slight
chance of thunderstorms. Highs in the mid 80s. East winds around
5 mph.
.FRIDAY NIGHT...Partly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. East winds
around 10 mph.
.SATURDAY...Mostly sunny with a chance of showers and a slight
chance of thunderstorms. Highs in the mid 80s. Southeast winds
around 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. Southeast
winds around 10 mph.
.SUNDAY...Partly sunny with a chance of showers and a slight
chance of thunderstorms. Highs in the upper 80s. Southeast winds
around 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. East winds
around 10 mph.
.MONDAY...Partly sunny with a chance of showers and a slight
chance of thunderstorms. Highs in the upper 80s. East winds
around 10 mph.

$$