FNUS52 KKEY 190822
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
422 AM EDT Fri Jun 19 2026

.Discussion...
A stray shower or thunderstorm is possible this morning across
the Middle and Upper Keys, however, not anticipating any wetting
rains. Boundary layer will remain such that afternoon min RH
values will fall only into in the 60 percentile and recover
overnight to between 80 and 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, especially Sunday.


FLZ076>078-192330-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
422 AM EDT Fri Jun 19 2026

                      Today        Tonight      Sat

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           83           90
Min/Max RH %          67           84           64
Wind 20ft AM (mph)    SE  7                     SE  5
Wind 20ft PM (mph)    SE  5        Lgt/Var      Lgt/Var
Precip Duration       1            1            1
Precip Begin          8 AM         8 PM         Continuing
Precip End            2 PM         Continuing   6 PM
Precip Amount         0.00         0.02         0.01
Mixing Hgt(ft-agl)    3300         1500         3100
Transport Wnd (mph)   SE 10        SE  9        SE  7
Dispersion Index      42           10           28
Max LVORI             3            5            3

Remarks...None.

$$

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

$$