609
CDUS42 KKEY 192018
CLIMTH
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
418 PM EDT TUE AUG 19 2025
...............................
..THE MARATHON CLIMATE SUMMARY FOR AUGUST 19 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 93 257 PM 96 2022 92 1 92
MINIMUM 83 422 AM 73 1955 80 3 84
1963
1989
AVERAGE 88 86 2 88
PRECIPITATION (IN)
TODAY 0.00 1.72 1986 0.17 -0.17 0.02
MONTH TO DATE 2.56 3.07 -0.51 4.70
SINCE JUN 1 10.24 11.07 -0.83 15.41
SINCE JAN 1 15.68 21.21 -5.53 31.02
DEGREE DAYS
HEATING
TODAY 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
TODAY 23 21 2 23
MONTH TO DATE 397 399 -2 408
SINCE JUN 1 1604 1606 -2 1663
SINCE JAN 1 3288 3229 59 3429
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 4.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82
LOWEST 64
AVERAGE 73
......................................................
THE MARATHON CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 92 95 2010
2012
2022
MINIMUM TEMPERATURE (F) 80 70 1963
SUNRISE AND SUNSET
AUGUST 19 2025........SUNRISE 700 AM EDT SUNSET 755 PM EDT
AUGUST 20 2025........SUNRISE 701 AM EDT SUNSET 754 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page