FNUS52 KKEY 180923
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
523 AM EDT Mon May 18 2026

.Discussion...
Enhanced moisture will continue to filter in across the Florida
Keys today, maintaining above normal rain and thunder chances.
That being said, the scattered nature of these showers will mean
that rainfall amounts will be highly variable. Breezy conditions
will continue through at least the next 24 hours before gradually
slackening. This will keep daytime dispersion indices in the upper
50s to 60s over the next couple of days.


FLZ076>078-182330-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
523 AM EDT Mon May 18 2026

                      Today        Tonight      Tue

Cloud Cover           Pcldy        Pcldy        Mclear
Chance Precip (%)     40           40           40
Chance of Thunder (%) 20           20           20
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          90           79           89
Min/Max RH %          66           87           66
Wind 20ft AM (mph)    E 12                      E 10
Wind 20ft PM (mph)    E 11         E 12         E  9
Precip Duration       2            2            2
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.01         0.05         0.04
Mixing Hgt(ft-agl)    3600         2300         3500
Transport Wnd (mph)   E 21         E 21         E 18
Dispersion Index      68           33           58
Max LVORI             4            4            4

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY NIGHT...Mostly clear with a chance of showers and a
slight chance of thunderstorms. Lows around 80. East winds around
10 mph.
.WEDNESDAY...Sunny with a slight chance of showers and
thunderstorms. Highs in the upper 80s. East winds around 10 mph.
.WEDNESDAY NIGHT...Mostly clear with a slight chance of showers
and thunderstorms. Lows around 80. East winds around 10 mph.
.THURSDAY...Sunny with a slight chance of showers and
thunderstorms. Highs in the upper 80s. East winds around 5 mph.
.THURSDAY NIGHT...Mostly clear with a slight chance of showers
and thunderstorms. Lows in the lower 80s. East winds around
5 mph.
.FRIDAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the upper 80s. East winds around 5 mph.
.FRIDAY NIGHT...Mostly clear with a slight chance of showers and
thunderstorms. Lows in the lower 80s. East winds around 5 mph.
.SATURDAY...Sunny with a slight chance of showers and
thunderstorms. Highs in the upper 80s. Southeast winds around
10 mph.
.SATURDAY NIGHT...Mostly clear with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 80s. East winds
around 10 mph.
.SUNDAY...Mostly sunny with a chance of thunderstorms and a
slight chance of showers. Highs around 90. East winds around
10 mph.

$$