750
CXUS52 KKEY 011720
CLMMTH

CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
120 PM EDT THU OCT 1 2026

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

...THE MARATHON CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1950 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             97   09/17/2023
                       09/16/2023
 LOW              66   09/22/1959
                       09/28/1954
                       09/04/1953
HIGHEST           92   09/01                          91  09/11
                                                          09/25
LOWEST            73   09/29                          73  09/13
AVG. MAXIMUM    88.5               89.9    -1.4     88.2
AVG. MINIMUM    79.8               78.4     1.4     77.9
MEAN            84.1               84.2    -0.1     83.1
DAYS MAX >= 90    11               19.0    -8.0        8
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       19.59   1959
 MINIMUM        0.22   1961
TOTALS          4.98               6.37   -1.39     9.26
DAILY AVG.      0.17               0.21   -0.04     0.31
DAYS >= .01       18               15.1     2.9       20
DAYS >= .10       10                9.1     0.9       13
DAYS >= .50        3                3.6    -0.6        7
DAYS >= 1.00       1                1.4    -0.4        5
GREATEST
 24 HR. TOTAL   2.56   09/29 TO 09/30


DEGREE DAYS
HEATING TOTAL      0                  0       0        0
 SINCE 7/1         0                  0       0        0
COOLING TOTAL    579                574       5      548
 SINCE 1/1      4052               4044       8     4096
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.8
HIGHEST WIND SPEED/DIRECTION    30/100    DATE  09/30
HIGHEST GUST SPEED/DIRECTION    40/110    DATE  09/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           26
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             20     MIXED PRECIP               0
HEAVY RAIN                8     RAIN                       7
LIGHT RAIN               18     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$


MARATHON DAILY RECORDS, SEPTEMBER 2026 AND 2026

RECORD                    SEP 2026     2026
======                    ========   ========
MAXIMUM TEMPERATURE           0          0
COOL MAXIMUM TEMPERATURE      0          7
WARM MINIMUM TEMPERATURE      1         18
MINIMUM TEMPERATURE           0          2
RAINFALL                      0          2


ROSS