Climatological Report (Daily)
Issued by NWS
Issued by NWS
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179
CDUS42 KKEY 210527
CLIMTH
CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
127 AM EDT MON SEP 21 2026
...................................
...THE MARATHON CLIMATE SUMMARY FOR SEPTEMBER 20 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 88 210 PM 95 1987 90 -2 90
2023
MINIMUM 77 341 AM 69 1956 78 -1 76
AVERAGE 83 84 -1 85
PRECIPITATION (IN)
YESTERDAY 0.13 2.08 1962 0.24 -0.11 0.11
MONTH TO DATE 1.59 4.20 -2.61 7.19
SINCE SEP 1 1.59 4.20 -2.61 7.19
SINCE JAN 1 17.46 27.66 -10.20 23.79
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 18 19 -1 18
MONTH TO DATE 409 390 19 356
SINCE SEP 1 409 390 19 356
SINCE JAN 1 3882 3860 22 3904
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 4.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94
LOWEST 63
AVERAGE 79
..........................................................
THE MARATHON CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 96 1987
MINIMUM TEMPERATURE (F) 78 70 1956
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.
$$