203
CDUS42 KKEY 060527
CLIMTH
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
127 AM EDT SAT SEP 06 2025
...............................
..THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 5 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 94 2001 91 MM 91
2007
2022
MINIMUM MM MM 69 1953 79 MM 85
AVERAGE MM 85 MM 88
PRECIPITATION (IN)
YESTERDAY 1.14 1.89 1955 0.20 0.94 0.00
MONTH TO DATE 3.33 1.00 2.33 0.42
SINCE SEP 1 3.33 1.00 2.33 0.42
SINCE JAN 1 19.93 24.46 -4.53 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 23
MONTH TO DATE 71 100 -29 106
SINCE SEP 1 71 100 -29 106
SINCE JAN 1 3619 3570 49 3774
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 4.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88
LOWEST 77
AVERAGE 83
......................................................
THE MARATHON CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 91 95 2022
MINIMUM TEMPERATURE (F) 79 71 1953
SUNRISE AND SUNSET
SEPTEMBER 6 2025.....SUNRISE 707 AM EDT SUNSET 737 PM EDT
SEPTEMBER 7 2025.....SUNRISE 708 AM EDT SUNSET 736 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 AS EARLY AS
THIS WEEKEND, WEATHER DEPENDENT, TO RETURN IT TO SERVICE.
MISSING DATA WILL BE BACK-FILLED LATER NEXT WEEK BY READINGS
TAKEN AT THE OFFICIAL BACKUP LOCATION AT THE NWS COOP SITE AT
CURRY HAMMOCK STATE PARK.
MC
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