Climatological Report (Daily)
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983
CDUS42 KKEY 172142
CLIMTH

CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
542 PM EDT THU SEP 17 2026

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

...THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 17 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         88   1005 AM  97    2023  90     -2       85
  MINIMUM         78    108 PM  71    1957  78      0       75
  AVERAGE         83                        84     -1       80

PRECIPITATION (IN)
  TODAY            0.16          2.17 2022   0.22  -0.06     0.37
  MONTH TO DATE    0.93                      3.50  -2.57     5.74
  SINCE SEP 1      0.93                      3.50  -2.57     5.74
  SINCE JAN 1     16.80                     26.96 -10.16    22.34

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           18                        19     -1       15
  MONTH TO DATE  355                       333     22      306
  SINCE SEP 1    355                       333     22      306
  SINCE JAN 1   3828                      3803     25     3854
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     E (70)
  AVERAGE WIND SPEED     7.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88
 LOWEST     70
 AVERAGE    79

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


THE MARATHON CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   90        95      1989
 MINIMUM TEMPERATURE (F)   78        68      1956


SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE   711 AM EDT   SUNSET   726 PM EDT
SEPTEMBER 18 2026.....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.




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