Climatological Report (Monthly)
Issued by NWS Upton, NY

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000
CXUS51 KOKX 011528
CLMISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1124 AM EDT TUE MAY 1 2018

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2018

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            72   04/13        MM      MM       85  04/29
LOWEST             26   04/11        MM      MM       34  04/09
                        04/09
AVG. MAXIMUM     54.6              57.6    -3.0     62.2
AVG. MINIMUM     37.2              40.6    -3.4     44.6
MEAN             45.9              49.1    -3.2     53.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      8               3.0     5.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.37   1998
 MINIMUM         1.29   1992
TOTALS           4.15              4.34   -0.19     3.67
DAILY AVG.       0.14              0.14    0.00     0.12
DAYS >= .01        12              11.3     0.7       13
DAYS >= .10         9               7.0     2.0        5
DAYS >= .50         2               2.6    -0.6        3
DAYS >= 1.00        1               1.1    -0.1        1
GREATEST
 24 HR. TOTAL    1.58   04/16 TO 04/16           04/03 TO 04/04
                                                          04/01 TO 04/02EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          04/02 TO 04/03EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/04(00) TO 04/04(00)
                                                 04/02(00) TO 04/02(00)3EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                 04/03(00) TO 04/03(00)3EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
TOTALS            4.6               0.6     4.0      0.0
 LIQUID EQUIV    0.46              0.10    0.36     0.00
SINCE 7/1        65.9              24.8    41.1     39.3
 LIQUID 7/1      6.59              2.50    4.09     3.93
DAYS >= TRACE       1               0.3     0.7        0
DAYS >= 1.0         1               0.2     0.8        0
GREATEST
 SNOW DEPTH         2   04/02                          0  MM
 24 HR TOTAL      4.6   04/02 TO 04/02           04/30 TO 04/30
                                                          04/02 TO 04/02EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          04/03 TO 04/03EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/30(00) TO 04/30(00)
                                                 04/02(00) TO 04/02(00)3EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                 04/03(00) TO 04/03(00)3EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

DEGREE_DAYS
HEATING TOTAL     566               479      87      352
 SINCE 7/1       4895              5171    -276     4510
COOLING TOTAL       0                 2      -2       11
 SINCE 1/1          0                 2      -2       11
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.0
HIGHEST WIND SPEED/DIRECTION    37/280    DATE  04/04
HIGHEST GUST SPEED/DIRECTION    53/290    DATE  04/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  4
  0
  0
  1
  1
  7
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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