Climatological Report (Daily)
Issued by NWS
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171
CDUS42 KKEY 100537
CLIMTH
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
137 AM EDT THU SEP 10 2026
...................................
...THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 9 2026...
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)
YESTERDAY
MAXIMUM 91 318 PM 95 1987 90 1 89
MINIMUM 83 253 AM 71 1954 79 4 77
1988
1991
AVERAGE 87 84 3 83
PRECIPITATION (IN)
YESTERDAY 0.15 2.30 2002 0.20 -0.05 0.30
MONTH TO DATE 0.49 1.83 -1.34 3.63
SINCE SEP 1 0.49 1.83 -1.34 3.63
SINCE JAN 1 16.36 25.29 -8.93 20.23
DEGREE DAYS
HEATING
YESTERDAY 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
YESTERDAY 22 20 2 18
MONTH TO DATE 192 180 12 167
SINCE SEP 1 192 180 12 167
SINCE JAN 1 3665 3650 15 3715
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 8.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82
LOWEST 59
AVERAGE 71
..........................................................
THE MARATHON CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 95 1993
MINIMUM TEMPERATURE (F) 79 67 1953
SUNRISE AND SUNSET
SEPTEMBER 10 2026.....SUNRISE 709 AM EDT SUNSET 733 PM EDT
SEPTEMBER 11 2026.....SUNRISE 709 AM EDT SUNSET 732 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$