133
FNUS52 KKEY 250838
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
438 AM EDT Sat Jul 25 2026

...DISPERSION INDICES LESS THAN 20 EXPECTED TODAY ACROSS THE FLORIDA KEYS...

.Discussion...
Near normal temperatures are expected today with highs near 90 and
overnight lows in the lower 80s. Min RH will hover around 65 percent
this afternoon while high boundary layer moisture supports a
slight chance of showers and storms. RH will recover to around 85 to
90 percent overnight. Light and variable winds will result in poor
dispersion indices through Sunday. Rain chances will increase across
the Florida Keys on Sunday in association with a longwave trough
which is forecast to extend southwest along the Eastern Seaboard and
across Florida.


FLZ076>078-252345-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
438 AM EDT Sat Jul 25 2026

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Pcldy
Chance Precip (%)     20           30           40
Chance of Thunder (%) 20           20           40
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          91           82           91
Min/Max RH %          64           86           65
Wind 20ft AM (mph)    Lgt/Var                   Lgt/Var
Wind 20ft PM (mph)    Lgt/Var      Lgt/Var      Lgt/Var
Precip Duration       2            2            2
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.05         0.05         0.08
Mixing Hgt(ft-agl)    3200         1500         3400
Transport Wnd (mph)   SE  5        SE  5        W  8
Dispersion Index      18           3            23
Max LVORI             4            5            4

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 80s. West winds around 5 mph.
.MONDAY...Mostly cloudy with a chance of showers and
thunderstorms. Highs in the upper 80s. West winds around 5 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 80s. West winds around 5 mph.
.TUESDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the upper 80s. Southwest winds around
5 mph.
.TUESDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms. Lows in the lower 80s. Southwest winds around
10 mph.
.WEDNESDAY...Mostly sunny with a slight chance of showers. Highs
around 90. Southwest winds around 10 mph.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 80s.
Southwest winds around 5 mph.
.THURSDAY...Sunny with a slight chance of showers. Highs around
90. Southwest winds around 5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 80s. West
winds around 5 mph.
.FRIDAY...Mostly sunny with a slight chance of showers. Highs
around 90. South winds around 5 mph.

$$