Climatological Report (Monthly)
Issued by NWS

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538
CXUS52 KKEY 011811 CCA
CLMMTH

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE KEY WEST, FL
120 PM EDT MON MAY 1 2017

CORRECTED TO ADD REMARKS SECTION

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

...THE MARATHON CLIMATE SUMMARY FOR THE MONTH OF APRIL 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
HIGHEST            89   04/06                         88  04/02
                        04/01
LOWEST             65   04/08                         66  04/05
AVG. MAXIMUM     84.7              82.9     1.8     83.8
AVG. MINIMUM     74.5              71.8     2.7     73.5
MEAN             79.6              77.3     2.3     78.7
DAYS MAX >= 90      0               0.1    -0.1        0
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)
TOTALS           2.64              2.38    0.26     1.46
DAILY AVG.       0.09              0.08    0.01     0.05
DAYS >= .01        10                                  4
DAYS >= .10         5                                  2
DAYS >= .50         2                                  1
DAYS >= 1.00        0                                  1

SNOWFALL (INCHES)
TOTALS            0.0                                0.0
SINCE 7/1         0.0                                0.0
SNOWDEPTH AVG.      0                                  0
DAYS >= 1.0         0                                  0
GREATEST
 SNOW DEPTH         0                                  0
 24 HR TOTAL      0.0   04/30 TO 04/30

DEGREE_DAYS
HEATING TOTAL       0                 0       0        0
 SINCE 7/1          3                81     -78       49
COOLING TOTAL     445               371      74      419
 SINCE 1/1       1428              1036     392     1091
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.0
HIGHEST WIND SPEED/DIRECTION    22/070    DATE  04/11
HIGHEST GUST SPEED/DIRECTION    32/130    DATE  04/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           20
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       6
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     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.

$$

ABOVE NORMAL TEMPERATURES AND RAINFALL WERE OBSERVED AT MARATHON
DURING THE MONTH OF APRIL. WITH DATA AT THE MARATHON AIRPORT ONLY
GOING BACK TO 1999, THE AVERAGE TEMPERATURE OF 79.5F RANKS AS THE
5TH WARMEST MONTH OF APRIL. YEAR TO DATE, AN AVERAGE TEMPERATURE OF
76.6F HAS BEEN OBSERVED, COMING IN AS THE WARMEST START TO THE YEAR
ON RECORD, SURPASSING THE NEXT WARMEST BY 0.4F.

THE 2.64 INCHES OF RAINFALL DURING APRIL MARKS THE 8TH WETTEST ON
RECORD, BRINGING THE TOTAL SO FAR FOR THE SPRING OF 2017 TO 3.01
INCHES, OR THE NINTH WETTEST SPRING TO DATE. HOWEVER, WITH JUST 4.54
INCHES OF RAINFALL YEAR TO DATE, ITS THE FIFTH DRIEST START TO THE
YEAR ON RECORD.

LOOKING AHEAD TO MAY, THE CLIMATE PREDICTION CENTER`S OUTLOOK
INDICATES PROBABILITIES FAVORING ABOVE NORMAL TEMPERATURES FOR MUCH
OF THE SOUTHEAST AND THE FLORIDA KEYS. NO REAL SIGNALS EXIST IN
TERMS OF RAINFALL. NORMAL HIGH AND LOW TEMPERATURES FOR MARATHON
DURING MAY ARE 87F AND 76F RESPECTIVIELY, WHILE 3.35 INCHES OF RAIN
TYPICALLY FALLS. RAINFALL AND TEMPERATURE NORMALS (1981-2010) FOR
MARATHON ARE COMPRISED OF DATA COLLECTED FROM DUCK KEY AND THE
MARATHON AIRPORT SINCE ITS INCEPTION IN 1999.

FLING



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