Climatological Report (Daily)
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250
CDUS42 KKEY 170530
CLIMTH

CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
130 AM EDT THU SEP 17 2026

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

...THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 16 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    103 PM  97    2023  90      1       89
  MINIMUM         79    236 AM  71    1952  78      1       78
                                      1965
  AVERAGE         85                        84      1       84

PRECIPITATION (IN)
  YESTERDAY        0.16          3.01 1996   0.22  -0.06     0.00
  MONTH TO DATE    0.77                      3.28  -2.51     5.37
  SINCE SEP 1      0.77                      3.28  -2.51     5.37
  SINCE JAN 1     16.64                     26.74 -10.10    21.97

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       20                        19      1       19
  MONTH TO DATE  337                       314     23      291
  SINCE SEP 1    337                       314     23      291
  SINCE JAN 1   3810                      3784     26     3839
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     E (110)
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION     E (80)
  AVERAGE WIND SPEED    10.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  HEAVY RAIN
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88
 LOWEST     59
 AVERAGE    74

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


THE MARATHON CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   90        97      2023
 MINIMUM TEMPERATURE (F)   78        71      1957


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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