407
FNUS52 KKEY 160807
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
407 AM EDT Wed Sep 16 2026

.Discussion...
A wet weather pattern will persist across the Keys through the
next couple of days. The steering flow will be moderate out of
the east northeast to east. As a result, shower and possible
thunderstorm activity will move fairly quickly in and out at any
given location. Rainfall amounts of a tenth to a half of an inch
will be possible with each heavier episode. Aside from convective
influences, temperatures will be near normal, with highs near 90,
lows in the lower 80s, and dew points in the mid to upper 70s. RH
will bottom out in the mid 60s in the afternoon and recover into
the 80s overnight. Surface winds will be gentle to moderate out of
the northeast to east.


FLZ076>078-170100-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
407 AM EDT Wed Sep 16 2026

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Chance Precip (%)     60           60           60
Chance of Thunder (%) 50           50           50
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          91           80           90
Min/Max RH %          68           90           68
Wind 20ft AM (mph)    E  9                      E  9
Wind 20ft PM (mph)    E  9         E 11         E  9
Precip Duration       8            9            9
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.08         0.17         0.18
Mixing Hgt(ft-agl)    3400         2000         3400
Transport Wnd (mph)   E 17         E 17         E 16
Dispersion Index      52           25           48
Max LVORI             4            4            4

Remarks...None.

$$

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

$$