Climatological Report (Daily)
Issued by NWS
Issued by NWS
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238
CDUS42 KKEY 170528
CLIMTH
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
128 AM EDT WED SEP 17 2025
...................................
...THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 16 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 MM MM 97 2023 90 MM 91
MINIMUM MM MM 71 1952 78 MM 84
1965
AVERAGE MM 84 MM 88
PRECIPITATION (IN)
YESTERDAY 0.00 3.01 1996 0.22 -0.22 0.00
MONTH TO DATE 5.37 3.28 2.09 0.77
SINCE SEP 1 5.37 3.28 2.09 0.77
SINCE JAN 1 21.97 26.74 -4.77 35.90
DEGREE DAYS
HEATING
YESTERDAY MM 0 MM 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY MM 19 MM 23
MONTH TO DATE 126 314 -188 357
SINCE SEP 1 126 314 -188 357
SINCE JAN 1 3674 3784 -110 4025
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 4.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85
LOWEST 57
AVERAGE 71
..........................................................
THE MARATHON CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 97 2023
MINIMUM TEMPERATURE (F) 78 71 1957
SUNRISE AND SUNSET
SEPTEMBER 17 2025.....SUNRISE 711 AM EDT SUNSET 726 PM EDT
SEPTEMBER 18 2025.....SUNRISE 712 AM EDT SUNSET 725 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$