650
FNUS52 KKEY 260803
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
403 AM EDT Sat Sep 26 2026

.Discussion...
A period of below-normal rain chances will continue through the weekend
in the wake of a cold front. MinRH values are forecast to fall into the
65-75 percent range in spots along the Island Chain today, then down into
the 60-70 percent range on Sunday due to the drier airmass. 20ft winds
will blow from the north around 5 to 8 mph today, becoming light and variable
at times during the afternoon. A wet pattern and south to southeasterly flow
is forecast to return by early next week in response to another deepening trough
axis over the Gulf.


FLZ076>078-262330-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
403 AM EDT Sat Sep 26 2026

                      Today        Tonight      Sun

Cloud Cover           Mclear       Mclear       Mclear
Chance Precip (%)     10           10           10
Chance of Thunder (%) 0            0            0
Weather Type          Showers      Showers      Showers
Max/Min Temp          87           75           86
Min/Max RH %          64           88           59
Wind 20ft AM (mph)    NE  6                     Lgt/Var
Wind 20ft PM (mph)    Lgt/Var      Lgt/Var      Lgt/Var
Precip Duration       1            1            1
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.02         0.01         0.00
Mixing Hgt(ft-agl)    3200         900          3300
Transport Wnd (mph)   N  5         NW  8        SW  6
Dispersion Index      21           4            15
Max LVORI             5            4            4

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY NIGHT...Partly cloudy with a slight chance of showers.
Lows in the upper 70s. Light winds.
.MONDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Highs in the upper 80s. Light winds.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the upper 70s. Light winds.
.TUESDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs in the upper 80s. Northeast winds around
5 mph.
.TUESDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows in the upper 70s. Southeast winds around
5 mph.
.WEDNESDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs in the upper 80s. Southeast winds around
5 mph.
.WEDNESDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows around 80. East winds around 10 mph.
.THURSDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs in the upper 80s. East winds around 15 mph.
.THURSDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows around 80. East winds around 15 mph.
.FRIDAY...Partly cloudy with a chance of showers and
thunderstorms. Highs in the upper 80s. East winds around 10 mph.

$$