823
CDUS42 KKEY 070527
CLIMTH
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
127 AM EDT SUN SEP 07 2025
...............................
..THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 6 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 95 2022 91 MM 90
MINIMUM MM MM 71 1953 79 MM 83
AVERAGE MM 85 MM 87
PRECIPITATION (IN)
YESTERDAY T 2.46 2010 0.21 -0.21 0.00
MONTH TO DATE 3.33 1.21 2.12 0.42
SINCE SEP 1 3.33 1.21 2.12 0.42
SINCE JAN 1 19.93 24.67 -4.74 35.55
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 20 MM 22
MONTH TO DATE 71 120 -49 128
SINCE SEP 1 71 120 -49 128
SINCE JAN 1 3619 3590 29 3796
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 4.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST MM
LOWEST MM
AVERAGE MM
......................................................
THE MARATHON CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 91 95 2022
MINIMUM TEMPERATURE (F) 79 71 1952
1955
1956
SUNRISE AND SUNSET
SEPTEMBER 7 2025.....SUNRISE 708 AM EDT SUNSET 736 PM EDT
SEPTEMBER 8 2025.....SUNRISE 708 AM EDT SUNSET 735 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
NOTE: THE FLORIDA KEYS MARATHON INTERNATIONAL AIRPORT ASOS
TEMPERATURE SENSOR IS CURRENTLY OUT OF SERVICE. TECHNICIANS ARE
AWARE OF THE ISSUE AND WILL BE VISITING THE SITE EARLY THIS WEEK,
WEATHER DEPENDENT, TO RETURN IT TO SERVICE.
MISSING DATA WILL BE BACK-FILLED LATER THIS WEEK BY READINGS
TAKEN AT THE OFFICIAL BACKUP LOCATION AT THE NWS COOP SITE AT
CURRY HAMMOCK STATE PARK.
MC
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