Climatological Report (Monthly)
Issued by NWS Upton, NY

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000
CXUS51 KOKX 011534
CLMISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1129 AM EDT WED MAY 1 2019



...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2019

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            71   04/23        MM      MM       72  04/13
LOWEST             26   04/02        MM      MM       26  04/11
                                                          04/09
AVG. MAXIMUM     59.7              57.6     2.1     54.6
AVG. MINIMUM     44.1              40.6     3.5     37.2
MEAN             51.9              49.1     2.8     45.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      2               3.0    -1.0        8
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.37   1998
 MINIMUM         1.29   1992
TOTALS           5.95              4.34    1.61     4.15
DAILY AVG.       0.20              0.14    0.06     0.14
DAYS >= .01        22              11.3    10.7       12
DAYS >= .10         9               7.0     2.0        9
DAYS >= .50         5               2.6     2.4        2
DAYS >= 1.00        1               1.1    -0.1        1
GREATEST
 24 HR. TOTAL    1.37   04/26 TO 04/26           04/16 TO 04/16
                                                          04/02 TO 04/02EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          04/02 TO 04/02EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/16(00) TO 04/16(00)
                                                 04/02(00) TO 04/02(00)2EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                 04/02(00) TO 04/02(00)2EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
TOTALS              T               0.6    -0.6      4.6
 LIQUID EQUIV      MM              0.10      MM     0.46
SINCE 7/1        12.8              24.8   -12.0     65.9
 LIQUID 7/1      1.28              2.50   -1.22     6.59
DAYS >= TRACE       1               0.3     0.7        1
DAYS >= 1.0         0               0.2    -0.2        1
GREATEST
 SNOW DEPTH         0   MM                             2  04/02
 24 HR TOTAL        T   04/05 TO 04/05           04/02 TO 04/02
                                                          04/02 TO 04/02EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          04/02 TO 04/02EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/02(00) TO 04/02(00)
                                                 04/02(00) TO 04/02(00)2EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                 04/02(00) TO 04/02(00)2EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

DEGREE_DAYS
HEATING TOTAL     384               479     -95      566
 SINCE 7/1       4875              5171    -296     4895
COOLING TOTAL       0                 2      -2        0
 SINCE 1/1          0                 2      -2        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.6
HIGHEST WIND SPEED/DIRECTION    32/280    DATE  04/15
HIGHEST GUST SPEED/DIRECTION    44/280    DATE  04/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         15

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  9
  0
  0
  0
  1
  3
HAZE                      2

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

$$



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