Climatological Report (Monthly)
Issued by NWS Upton, NY

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CXUS51 KOKX 012143 RRA
CLMISP

NYCCLMISP 000
TTAA00 KOKX 012134


CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
534 PM EDT MON MAY 1 2017

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1984 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              94   MM
 LOW               23   04/06/2016
                        01/21/1985
                        02/08/1963
HIGHEST            85   04/29        MM      MM       77  04/18
LOWEST             34   04/09        MM      MM       23  04/06
AVG. MAXIMUM     62.2              57.6     4.6     58.4
AVG. MINIMUM     44.6              40.6     4.0     40.5
MEAN             53.4              49.1     4.3     49.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               3.0    -3.0        5
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.37   1998
 MINIMUM         1.29   1992
TOTALS           3.67              4.34   -0.67     2.39
DAILY AVG.       0.12              0.14   -0.02     0.08
DAYS >= .01        13              11.3     1.7       10
DAYS >= .10         5               7.0    -2.0        7
DAYS >= .50         3               2.6     0.4        0
DAYS >= 1.00        1               1.1    -0.1        0
GREATEST
 24 HR. TOTAL    1.08   04/03 TO 04/04           04/02 TO 04/03
                        04/01 TO 04/02                    04/03 TO 04/03
                        04/02 TO 04/03                    04/03 TO 04/03
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/03(00) TO 04/03(00)
                                                 04/03(00) TO 04/03(00)3
                                                 04/03(00) TO 04/03(00)3

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
TOTALS            0.0               0.6    -0.6      0.2
 LIQUID EQUIV    0.00              0.10   -0.10     0.02
SINCE 7/1        39.3              24.8    14.5     41.4
 LIQUID 7/1      3.93              2.50    1.43     4.14
DAYS >= TRACE       0               0.3    -0.3        2
DAYS >= 1.0         0               0.2    -0.2        0
GREATEST
 SNOW DEPTH         0   MM                             0  04/03
 24 HR TOTAL      0.0   04/30 TO 04/30           04/03 TO 04/03
                                                          04/03 TO 04/03
                                                          04/03 TO 04/03
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/03(00) TO 04/03(00)
                                                 04/03(00) TO 04/03(00)3
                                                 04/03(00) TO 04/03(00)3

DEGREE_DAYS
HEATING TOTAL     352               479    -127      457
 SINCE 7/1       4510              5171    -661     4138
COOLING TOTAL      11                 2       9        0
 SINCE 1/1         11                 2       9        0
....................................................

WIND (MPH)
AVERAGE WIND SPEED              9.8
HIGHEST WIND SPEED/DIRECTION    31/120    DATE  04/06
HIGHEST GUST SPEED/DIRECTION    49/110    DATE  04/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       5
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      16     FOG W/VIS <= 1/4 MILE      3
HAZE                      0

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

$$


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