Climatological Report (Daily)
Issued by NWS
Issued by NWS
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705
CDUS42 KKEY 180538
CLIMTH
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
138 AM EDT MON AUG 18 2025
...................................
...THE MARATHON CLIMATE SUMMARY FOR AUGUST 17 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1950 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 89 514 PM 96 1993 92 -3 89
MINIMUM 79 606 AM 70 1953 80 -1 80
AVERAGE 84 86 -2 85
PRECIPITATION (IN)
YESTERDAY 0.09 0.60 1989 0.17 -0.08 0.00
MONTH TO DATE 2.56 2.73 -0.17 3.45
SINCE JUN 1 10.24 10.73 -0.49 14.16
SINCE JAN 1 15.68 20.87 -5.19 29.77
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 19 21 -2 20
MONTH TO DATE 352 357 -5 365
SINCE JUN 1 1559 1564 -5 1620
SINCE JAN 1 3243 3187 56 3386
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION E (100)
AVERAGE WIND SPEED 3.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88
LOWEST 65
AVERAGE 77
..........................................................
THE MARATHON CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 92 96 1991
MINIMUM TEMPERATURE (F) 80 70 2007
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 700 AM EDT SUNSET 756 PM EDT
AUGUST 19 2025........SUNRISE 700 AM EDT SUNSET 755 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$