FNUS52 KKEY 240835
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
435 AM EDT Mon Aug 24 2026

.Discussion...
Slight rain and thunder chances continue through tonight,
increasing to chances on Tuesday as moisture starts to increase
across the Keys. 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 (mid to upper 90s on Big Pine Key) during the
overnight hours with min RH values in the upper 50s to lower 60s
(mid 50s for Big Pine Key) for during the afternoon hours. Also, a
mainly southeasterly flow regime is expected to continue through
Tuesday with light to gentle breezes. Dispersion indices are
expected to be generally fair to good over the next couple of
days.

FLZ076>078-250130-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
435 AM EDT Mon Aug 24 2026

                      Today        Tonight      Tue

Cloud Cover           Mclear       Mclear       Mclear
Chance Precip (%)     20           20           30
Chance of Thunder (%) 20           20           20
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          91           82           92
Min/Max RH %          59           84           61
Wind 20ft AM (mph)    Lgt/Var                   E  5
Wind 20ft PM (mph)    Lgt/Var      E  5         E  6
Precip Duration       1            1            2
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.01         0.00         0.01
Mixing Hgt(ft-agl)    3900         1500         3800
Transport Wnd (mph)   SE 10        E 10         E 10
Dispersion Index      36           6            42
Max LVORI             4            5            4

Remarks...None.

$$

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

$$

MJV