FNUS52 KKEY 180836
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
436 AM EDT Thu Jun 18 2026

.Discussion...
A stray shower or thunderstorm is possible this morning across
the Middle and Upper Keys, otherwise, mainly dry conditions
expected to continue. Moisture trapped in the boundary layer will
aid in allowing afternoon min RH values to remain in the 60
percentile and recover overnight to near 90 percent. Gentle southeasterly
breezes will maintain dispersion indices in the poor to fair
category. Winds are expected to slacken this weekend, leading to
dispersion indices potentially falling below 20.


FLZ076>078-182330-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
436 AM EDT Thu Jun 18 2026

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Pcldy        Pcldy
Chance Precip (%)     10           10           10
Chance of Thunder (%) 10           10           10
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          90           84           90
Min/Max RH %          68           86           67
Wind 20ft AM (mph)    SE  7                     SE  6
Wind 20ft PM (mph)    SE  6        SE  6        Lgt/Var
Precip Duration       1            1            1
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   2 PM
Precip Amount         0.00         0.00         0.00
Mixing Hgt(ft-agl)    3100         1700         3000
Transport Wnd (mph)   SE  9        SE 15        SE  7
Dispersion Index      38           15           29
Max LVORI             4            4            3

Remarks...None.

$$

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

$$