Climatological Report (Monthly)
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000
CXUS52 KKEY 031920
CLMMTH


CLIMATE REPORT
NATIONAL WEATHER SERVICE KEY WEST, FL
320 PM EDT TUE APR 3 2018

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

...THE MARATHON CLIMATE SUMMARY FOR THE MONTH OF MARCH 2018...

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            88   03/19                         87  03/31
                                                          03/29
                                                          03/02
LOWEST             57   03/15                         58  03/16
                        03/13
AVG. MAXIMUM     80.4              79.4     1.0     81.7
AVG. MINIMUM     66.7              68.5    -1.8     70.2
MEAN             73.6              74.0    -0.4     76.0
DAYS MAX >= 90      0               0.0     0.0        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           1.16              2.39   -1.23     0.38
DAILY AVG.       0.04              0.08   -0.04     0.01
DAYS >= .01         5                                  5
DAYS >= .10         2                                  1
DAYS >= .50         1                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.93   03/12 TO 03/12

SNOWFALL (INCHES)
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                 0       0        0
DAYS >= 1.0         0                 0       0        0
GREATEST
 SNOW DEPTH         0                                  0
 24 HR TOTAL      0.0   03/31 TO 03/31

DEGREE_DAYS
HEATING TOTAL       1                 6      -5        0
 SINCE 7/1         62                81     -19        3
COOLING TOTAL     256               283     -27      347
 SINCE 1/1        755               665      90      983
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
HIGHEST WIND SPEED/DIRECTION    24/070    DATE  03/27
HIGHEST GUST SPEED/DIRECTION    37/240    DATE  03/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.10
NUMBER OF DAYS FAIR           26
NUMBER OF DAYS PC              3
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       2
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG OR MIST               4     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.

$$


WHILE RECORDS ARE NOT YET TRACKED AT MARATHON, DUE TO THE SHORTER
PERIOD OF CONTINUOUS RECORDS, MARCH 2018 WAS THE 5TH COLDEST MARCH
RECORDED SINCE ASOS DATA BEGAN IN MAY 1998. ENDING THE MONTH WITH AN
AVERAGE OF 73.6 DEGREES FAHRENHEIT, 0.4 DEGREES BELOW NORMAL. THE
WARMEST MARCH ON RECORD DURING THIS RELATIVELY SHORT PERIOD OF TIME
IS 2003 WITH AN AVERAGE MONTHLY TEMPERATURE OF 79.2 DEGREES. THE
COLDEST MARCH ON RECORD IS 2010 WITH AN AVERAGE TEMPERATURE OF 67.8
DEGREES.

A LARGER DEPARTURE FROM NORMAL LAST MONTH WAS THE RAINFALL. MARATHON
ENDED THE MONTH WITH A TOTAL OF 1.16 INCHES, A DEFICIT OF 1.23
INCHES WHEN COMPARED TO THE MONTHLY AVERAGE. WHILE OVER AN INCH
BELOW THE AVERAGE, IT WAS NOT ENOUGH TO BREAK INTO THE TOP 5 FOR
DRIEST MARCH ON RECORD, PLACING 10TH OUT OF 20 YEARS. THE WETTEST
MARCH ON RECORD FOR MARATHON IS 2003 WHEN 4.33 INCHES WAS RECORDED
AND THE DRIEST ON RECORD IS 2017 WHEN JUST 0.38 INCHES WAS MEASURED.


ROSS




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