412
FNUS52 KKEY 230832
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
432 AM EDT Sun Aug 23 2026

.Discussion...
Slight rain and thunder chances continue for the next couple
days. In addition, warmer than normal weather is expected to
continue with daytime highs near 90 degrees and overnight lows not
providing much relief only falling into the lower to mid 80s.
Relative humidity values are expected to recover into the mid 80s
during the overnight hours with min RH values in the mid 50s
(especially Big Pine Key) to lower 60s during the afternoon
hours. Also, a mainly southeasterly flow regime is expected to
continue into early week with light to gentle breezes. Dispersion
indices are expected to be generally fair over the next couple of
days.

FLZ076>078-240130-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
432 AM EDT Sun Aug 23 2026

                      Today        Tonight      Mon

Cloud Cover           Mclear       Pcldy        Mclear
Chance Precip (%)     20           10           10
Chance of Thunder (%) 20           10           10
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          91           82           93
Min/Max RH %          61           84           58
Wind 20ft AM (mph)    SE  5                     SE  7
Wind 20ft PM (mph)    Lgt/Var      Lgt/Var      E  8
Precip Duration       1            1            1
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.03         0.01         0.00
Mixing Hgt(ft-agl)    3700         1300         3700
Transport Wnd (mph)   SE  6        SE  9        SE 10
Dispersion Index      24           6            38
Max LVORI             4            4            4

Remarks...None.

$$

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

$$

MJV