700
CXUS52 KKEY 011511
CLMMTH

CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
1111 AM EDT TUE OCT 1 2024

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

...THE MARATHON CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1950 TO 2024

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           94   09/12                          97  09/16
                                                          09/17
LOWEST            77   09/26                          74  09/21
                                                          09/23
AVG. MAXIMUM    90.3               89.9     0.4     92.9
AVG. MINIMUM    81.5               78.4     3.1     80.1
MEAN            85.9               84.2     1.7     86.5
DAYS MAX >= 90    19               19.0     0.0       26
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          3.18               6.37   -3.19     7.49
DAILY AVG.      0.11               0.21   -0.10     0.25
DAYS >= .01       17               15.1     1.9       12
DAYS >= .10       11                9.1     1.9        8
DAYS >= .50        0                3.6    -3.6        4
DAYS >= 1.00       0                1.4    -1.4        3
GREATEST
 24 HR. TOTAL   0.66   09/24 TO 09/25


DEGREE DAYS
HEATING TOTAL      0                  0       0        0
 SINCE 7/1         0                  0       0        0
COOLING TOTAL    636                574      62      655
 SINCE 1/1      4304               4044     260     4964
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.5
HIGHEST WIND SPEED/DIRECTION    33/170    DATE  09/26
HIGHEST GUST SPEED/DIRECTION    56/160    DATE  09/26

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)     78

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             13     MIXED PRECIP               0
HEAVY RAIN               12     RAIN                       9
LIGHT RAIN               18     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      0
HAZE                      6

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

$$


MARATHON DAILY RECORDS, SEPTEMBER 2024 AND 2024-TO-DATE

RECORD                    SEP 2024     2024
======                    ========   ========
MAXIMUM TEMPERATURE           0          3
COOL MAXIMUM TEMPERATURE      0          0
WARM MINIMUM TEMPERATURE     11         45
MINIMUM TEMPERATURE           0          0
RAINFALL                      0          4


TOP 10 WARMEST SEPTEMBERS ON RECORD FOR MARATHON

RANKING    YEAR    AVERAGE (DEG F)
=======    ====    ===============
   1       2023         86.5
   2       1987         86.0
   3       2024         85.9   <---
           2022         85.9
   5       2002         85.7
   6       2000         85.4
           2011         85.1
   8       1989         85.0
           1998         84.9
  10       2020         84.8
           2019         84.8
           2018         84.8
           2006         84.8


ROSS