231
FNUS52 KKEY 150805
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
405 AM EDT Tue Sep 15 2026

.Discussion...
Expect seasonable shower and thunder chances today, but chances
are expected to increase over the following days due to
increasing moisture and broader troughing moving in. Surface
conditions will remain seasonable with highs near 90 and lows in
the lower 80s. RH will bottom out in the mid 60s in the afternoon
and recover into the 80s overnight. Winds will be light east to
southeasterly this morning, gradually strengthening to a gentle to
moderate northeast to easterly breeze late this afternoon and
evening.


FLZ076>078-160015-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
405 AM EDT Tue Sep 15 2026

                      Today        Tonight      Wed

Cloud Cover           Mclear       Pcldy        Pcldy
Chance Precip (%)     30           60           60
Chance of Thunder (%) 30           50           50
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          91           81           91
Min/Max RH %          64           90           65
Wind 20ft AM (mph)    E  6                      E  9
Wind 20ft PM (mph)    E  6         E 10         E  9
Precip Duration       2            8            9
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.04         0.09         0.14
Mixing Hgt(ft-agl)    3400         1100         3500
Transport Wnd (mph)   E 10         E 21         E 17
Dispersion Index      40           25           50
Max LVORI             4            4            4

Remarks...None.

$$

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

$$