Climatological Report (Monthly)
Issued by NWS Upton, NY

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CXUS51 KOKX 011332
CLMISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
927 AM EDT THU JUN 1 2017



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

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              98   05/20/1996
 LOW               32   05/01/2008
HIGHEST            89   05/19        MM      MM       88  05/25
                        05/18
LOWEST             39   05/04        MM      MM       41  05/16
                                                          05/09
AVG. MAXIMUM     66.9              67.5    -0.6     67.4
AVG. MINIMUM     50.5              49.8     0.7     50.4
MEAN             58.7              58.6     0.1     58.9
DAYS MAX >= 90      0               0.3    -0.3        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)
RECORD
 MAXIMUM        10.14   1989
 MINIMUM         0.42   2015
TOTALS           4.16              3.78    0.38     3.61
DAILY AVG.       0.13              0.12    0.01     0.12
DAYS >= .01        12              11.1     0.9       12
DAYS >= .10         9               6.7     2.3        8
DAYS >= .50         3               2.5     0.5        4
DAYS >= 1.00        1               1.0     0.0        0
GREATEST
 24 HR. TOTAL    1.32   05/13 TO 05/13           05/29 TO 05/30
                                                          05/31 TO 05/31
                                                          05/31 TO 05/31
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    05/30(00) TO 05/30(00)
                                                 05/31(00) TO 05/31(00)1
                                                 05/31(00) TO 05/31(00)1

SNOWFALL (INCHES)
RECORDS
 TOTAL              T   1991
                        0
                        0
 24 HR TOTAL       MM
TOTALS            0.0               0.0     0.0      0.0
 LIQUID EQUIV    0.00              0.00    0.00     0.00
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               0.0     0.0        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   05/31 TO 05/31           05/31 TO 05/31
                                                          05/31 TO 05/31
                                                          05/31 TO 05/31
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    05/31(00) TO 05/31(00)
                                                 05/31(00) TO 05/31(00)1
                                                 05/31(00) TO 05/31(00)1

DEGREE_DAYS
HEATING TOTAL     217               219      -2      226
 SINCE 7/1       4727              5390    -663     4364
COOLING TOTAL      28                22       6       44
 SINCE 1/1         39                24      15       44
..................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    32/240    DATE  05/02
HIGHEST GUST SPEED/DIRECTION    45/330    DATE  05/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         17

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       6
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      6
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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