Climatological Report (Daily)
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CDUS42 KKEY 212131
CLIMTH

CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
531 PM EDT MON SEP 21 2026

...................................

...THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 21 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         87   1055 AM  96    1987  90     -3       90
  MINIMUM         80    114 PM  70    1956  78      2       79
                                      1959
  AVERAGE         84                        84      0       85

PRECIPITATION (IN)
  TODAY            0.14          4.44 1959   0.23  -0.09     0.03
  MONTH TO DATE    1.73                      4.43  -2.70     7.22
  SINCE SEP 1      1.73                      4.43  -2.70     7.22
  SINCE JAN 1     17.60                     27.89 -10.29    23.82

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           19                        19      0       20
  MONTH TO DATE  428                       409     19      376
  SINCE SEP 1    428                       409     19      376
  SINCE JAN 1   3901                      3879     22     3924
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     S (160)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     S (160)
  AVERAGE WIND SPEED     7.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  THUNDERSTORM
  HEAVY RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90
 LOWEST     70
 AVERAGE    80

..........................................................


THE MARATHON CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   89        94      1987
 MINIMUM TEMPERATURE (F)   78        66      1959


SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE   713 AM EDT   SUNSET   722 PM EDT
SEPTEMBER 22 2026.....SUNRISE   713 AM EDT   SUNSET   721 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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