401
FNUS52 KKEY 200851
FWFKEY
FIRE WEATHER PLANNING FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
451 AM EDT MON JUL 20 2026
DISCUSSION
TEMPERATURES WILL REMAIN SLIGHTLY ABOVE NORMAL WITH HIGHS NEAR
90, OVERNIGHT LOWS IN THE LOWER TO MID 80S. DEW POINTS WILL BE IN
THE MID TO UPPER 70S. MINIMUM RH VALUES WILL BE NEAR 60% DURING
THE DAY, RECOVERING TO 85% TO 90% OVERNIGHT. WAVES OF SAHARA DUST
WILL CONTINUE TO DOMINATE THE REGION FOR THE NEXT FEW DAYS,
CONTINUING TO YIELD TO MAINLY SLIGHT CHANCES.
THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL
DEPRESSION TWO LOCATED ACROSS THE NORTHEASTERN GULF OF AMERICA.
THIS SYSTEM POSES NO RISK TO THE FLORIDA KEYS.
FLZ076>078-210130-
MONROE UPPER KEYS-MONROE MIDDLE KEYS-MONROE LOWER KEYS-
INCLUDING THE CITIES OF KEY LARGO, MARATHON, AND KEY WEST
451 AM EDT MON JUL 20 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY MCLEAR
CHANCE PRECIP (%) 10 20 10
CHANCE OF THUNDER (%) 10 20 10
WEATHER TYPE TSTMS TSTMS TSTMS
MAX/MIN TEMP 92 83 92
MIN/MAX RH % 61 87 61
WIND 20FT AM (MPH) S 9 SE 10
WIND 20FT PM (MPH) S 9 S 6 SE 8
PRECIP DURATION 1 1 1
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
PRECIP AMOUNT 0.00 0.00 0.00
MIXING HGT(FT-AGL) 3900 1700 3500
TRANSPORT WND (MPH) S 14 SE 12 SE 12
DISPERSION INDEX 49 13 50
MAX LVORI 3 4 3
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
TUESDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS IN THE LOWER 80S. SOUTHEAST WINDS AROUND
5 MPH.
WEDNESDAY
SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE LOWER 90S. SOUTHEAST WINDS AROUND
5 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 80S. EAST
WINDS AROUND 5 MPH.
THURSDAY
SUNNY WITH A SLIGHT 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
SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS AROUND 90. 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. HIGHS AROUND
90. SOUTHEAST WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 80S. LIGHT
WINDS.
SUNDAY
SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS AROUND 90. LIGHT WINDS.
MJV
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