153
CDUS42 KKEY 182018
CLIEYW
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
418 PM EDT THU SEP 18 2025
...............................
..THE KEY WEST CLIMATE SUMMARY FOR SEPTEMBER 18 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1871 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 85 1112 AM 93 2023 89 -4 89
MINIMUM 75 450 AM 70 1891 79 -4 76
AVERAGE 80 84 -4 83
PRECIPITATION (IN)
TODAY 1.28 2.55 1879 0.27 1.01 0.35
MONTH TO DATE 8.54 4.41 4.13 0.61
SINCE SEP 1 8.54 4.41 4.13 0.61
SINCE JAN 1 32.74 27.73 5.01 36.60
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
TODAY 15 19 -4 18
MONTH TO DATE 328 351 -23 396
SINCE SEP 1 328 351 -23 396
SINCE JAN 1 3857 3787 70 4105
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION E (100)
AVERAGE WIND SPEED 8.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100
LOWEST 80
AVERAGE 90
......................................................
THE KEY WEST CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 92 1951
1987
MINIMUM TEMPERATURE (F) 79 70 1890
SUNRISE AND SUNSET
SEPTEMBER 18 2025.....SUNRISE 714 AM EDT SUNSET 727 PM EDT
SEPTEMBER 19 2025.....SUNRISE 715 AM EDT SUNSET 726 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