Climatological Report (Annual)
Issued by NWS Upton, NY

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000
CXUS51 KOKX 021806
CLAISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
103 PM EST TUE JAN 2 2018

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE YEAR OF 2017...

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             102   07/05/1999
 LOW               -7   01/15/1988
                        01/22/1984
HIGHEST            93   07/21        MM      MM       97  08/14
                        06/13
LOWEST              4   01/09        MM      MM        0  02/14
AVG. MAXIMUM     62.3              60.3     2.0     63.3
AVG. MINIMUM     46.2              44.3     1.9     46.2
MEAN             54.2              52.3     1.9     54.7
DAYS MAX >= 90      8               4.8     3.2       15
DAYS MAX <= 32     20              18.3     1.7       11
DAYS MIN <= 32     90              97.9    -7.9       84
DAYS MIN <= 0       0               0.1    -0.1        1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        65.32   1989
 MINIMUM        34.41   1985
TOTALS          43.44             46.24   -2.80    34.99
DAILY AVG.       0.12              0.13   -0.01     0.09
DAYS >= .01       120             118.9     1.1      114
DAYS >= .10        76              75.2     0.8       64
DAYS >= .50        27              30.5    -3.5       29
DAYS >= 1.00       11              11.8    -0.8        7
GREATEST
 24 HR. TOTAL    4.02   MM                       12/31 TO 12/31
                                                          12/31 TO 12/31
                                                          12/31 TO 12/31
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/31(00) TO 12/31(00)
                                                 12/31(00) TO 12/31(00)1
                                                 12/31(00) TO 12/31(00)1

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
 24 HR TOTAL     23.4   MM
 SNOW DEPTH        MM   MM
TOTALS           42.1              24.8    17.3     44.6
 LIQUID EQUIV    4.21              2.50    1.71     4.46
SINCE 7/1         6.0               5.9     0.1      3.2
 LIQUID 7/1      0.60              0.60    0.00     0.32
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE      26              12.3    13.7       29
DAYS >= 1.0        11               7.5     3.5        6
GREATEST
 SNOW DEPTH        13   02/10                         23  01/24
 24 HR TOTAL     14.3   MM                       12/31 TO 12/31
                                                          12/31 TO 12/31
                                                          12/31 TO 12/31
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/31(00) TO 12/31(00)
                                                 12/31(00) TO 12/31(00)1
                                                 12/31(00) TO 12/31(00)1

DEGREE_DAYS
HEATING TOTAL    4815              5426    -611     4776
 SINCE 7/1         MM              1927      MM       MM
COOLING TOTAL     972               787     185     1124
 SINCE 1/1        972               787     185     1124
..................................................

WIND (MPH)
AVERAGE WIND SPEED              9.4
RESULTANT WIND SPEED/DIRECTION   2/277
HIGHEST WIND SPEED/DIRECTION    41/140    DATE  10/29
HIGHEST GUST SPEED/DIRECTION    56/130    DATE  10/29

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           66
NUMBER OF DAYS PC            171
NUMBER OF DAYS CLOUDY        128

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN               16     RAIN                      53
LIGHT RAIN              140     FREEZING RAIN              1
LT FREEZING RAIN          2     HAIL                       1
HEAVY SNOW                2     SNOW                       8
LIGHT SNOW               23     SLEET                      4
FOG                     172     FOG W/VIS <= 1/4 MILE     40
HAZE                     17

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

$$


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