475
FNUS52 KKEY 220830
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
430 AM EDT Sat Aug 22 2026

.Discussion...
Warmer than normal weather continues while rain chances slowly
increase in the coming days. Temperatures in the lower 90s are
likely across the island chain while dew points stay in the mid
to upper 70s. Relative humidity values are expected to recover
into the upper 70s to mid 80s during the overnight hours with min
RH values in the lower 60s during the afternoon hours. In
addition, a weak, southeasterly flow pattern with winds becoming
light and variable at times during the afternoon suggests that
dispersion indices will be poor through the weekend.


FLZ076>078-222315-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
430 AM EDT Sat Aug 22 2026

                      Today        Tonight      Sun

Cloud Cover           Mclear       Pcldy        Pcldy
Chance Precip (%)     10           20           20
Chance of Thunder (%) 10           20           20
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          92           82           92
Min/Max RH %          62           82           62
Wind 20ft AM (mph)    SE  5                     SE  5
Wind 20ft PM (mph)    Lgt/Var      Lgt/Var      Lgt/Var
Precip Duration       1            1            1
Precip Begin          8 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.01         0.01         0.02
Mixing Hgt(ft-agl)    3400         2000         3500
Transport Wnd (mph)   SE  6        SE  8        SE  6
Dispersion Index      18           6            26
Max LVORI             4            4            4

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY NIGHT...Partly cloudy with a slight chance of showers and
thunderstorms. Lows in the lower 80s. Southeast winds around
5 mph.
.MONDAY...Sunny. Highs in the lower 90s. East winds around 5 mph.
.MONDAY NIGHT...Mostly clear with a chance of showers and
thunderstorms. Lows in the lower 80s. East winds around 10 mph.
.TUESDAY...Sunny with a slight chance of showers and
thunderstorms. Highs in the lower 90s. East winds around 10 mph.
.TUESDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 80s. East winds around 10 mph.
.WEDNESDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the lower 90s. East winds around 5 mph.
.WEDNESDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 80s. East winds around 10 mph.
.THURSDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the lower 90s. East winds around 5 mph.
.THURSDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 80s. East winds around 10 mph.
.FRIDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the lower 90s. Southeast winds around
5 mph.

$$