518
FNUS52 KKEY 030833
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
433 AM EDT Thu Sep 3 2026

.Discussion...
Chances of showers and thunderstorms expected as ample moisture
dominates the Keys. Relative humidity values are expected to
recover to the upper 80s percent overnight with min RH values in
the mid 60s during the afternoon hours. Generally, light to gentle
easterly breezes are expected. Dispersion indices are will be
generally poor to fair over the next couple of days.

FLZ076>078-040100-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
433 AM EDT Thu Sep 3 2026

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Mclear       Pcldy
Chance Precip (%)     30           30           30
Chance of Thunder (%) 30           30           30
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          92           82           91
Min/Max RH %          64           87           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         0.02         0.01         0.11
Mixing Hgt(ft-agl)    3200         1700         3100
Transport Wnd (mph)   S  9         SE  9        SE  7
Dispersion Index      31           5            28
Max LVORI             4            5            4

Remarks...None.

$$

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

$$