391
CDUS42 KKEY 202132
CLIMTH
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
532 PM EDT SUN SEP 20 2026
...............................
..THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 20 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1950 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 88 210 PM 95 1987 90 -2 90
2023
MINIMUM 77 341 AM 69 1956 78 -1 76
AVERAGE 83 84 -1 83
PRECIPITATION (IN)
TODAY 0.06 2.08 1962 0.24 -0.18 0.11
MONTH TO DATE 1.52 4.20 -2.68 7.19
SINCE SEP 1 1.52 4.20 -2.68 7.19
SINCE JAN 1 17.39 27.66 -10.27 23.79
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 18 19 -1 18
MONTH TO DATE 409 390 19 356
SINCE SEP 1 409 390 19 356
SINCE JAN 1 3882 3860 22 3904
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 4.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87
LOWEST 63
AVERAGE 75
......................................................
THE MARATHON CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 96 1987
MINIMUM TEMPERATURE (F) 78 70 1956
1959
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 712 AM EDT SUNSET 723 PM EDT
SEPTEMBER 21 2026.....SUNRISE 713 AM EDT SUNSET 722 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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