Climatological Report (Monthly)
Issued by NWS Key West, FL

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000
CXUS52 KKEY 011450
CLMEYW

CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
1050 AM EDT SUN OCT 01 2023

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

...THE KEY WEST CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1871 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             95   09/20/2018
                       09/03/2007
                       09/02/1956
 LOW              69   09/17/1985
                       09/30/1945
                       09/02/1898
HIGHEST           95R  09/14                          92  09/23
                                                          09/24
LOWEST            72   09/24                          73  09/08
AVG. MAXIMUM    90.4               89.0     1.4     88.5
AVG. MINIMUM    80.5               79.2     1.3     78.3
MEAN            85.4               84.1     1.3     83.4
DAYS MAX >= 90    17                9.6     7.4        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       18.45   1963
 MINIMUM        1.71   1961
TOTALS          8.77               7.24    1.53    12.06
DAILY AVG.      0.29               0.24    0.05     0.40
DAYS >= .01       16               15.8     0.2       15
DAYS >= .10       11               10.2     0.8       10
DAYS >= .50        5                4.0     1.0        6
DAYS >= 1.00       4                1.9     2.1        5
GREATEST
 24 HR. TOTAL   2.47   09/24 TO 09/24


DEGREE DAYS
HEATING TOTAL      0                  0       0        0
 SINCE 7/1         0                  0       0
COOLING TOTAL    620                573      47      559
 SINCE 1/1      4619               4009     610
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.1
HIGHEST WIND SPEED/DIRECTION    41/230    DATE  09/24
HIGHEST GUST SPEED/DIRECTION    59/230    DATE  09/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.27
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             15     MIXED PRECIP               0
HEAVY RAIN               10     RAIN                      10
LIGHT RAIN               19     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      1
HAZE                      3

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

$$

KEY WEST DAILY RECORDS, SEPTEMBER 2023 AND 2023-TO-DATE

RECORD                    SEP 2023     2023
======                    ========   ========
MAXIMUM TEMPERATURE           5         26
COOL MAXIMUM TEMPERATURE      0          0
WARM MINIMUM TEMPERATURE      6         51
MINIMUM TEMPERATURE           1          1
RAINFALL                      1          2


TOP 10 WARMEST SEPTEMBERS ON RECORD FOR KEY WEST

RANKING    YEAR    AVERAGE (DEG F)
=======    ====    ===============
   1       2018         85.8
   2       2020         85.6
   3       2023         85.4      <---
   4       1951         85.2
   5       1989         85.1
           1872         85.1
   7       2007         85.0
           2003         85.0
   9       2015         84.9
           2011         84.9
           1987         84.9

BT/NB


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