Climatological Report (Annual)
Issued by NWS Upton, NY

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443
CXUS51 KOKX 021717
CLAISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1207 PM EST THU JAN 2 2020

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE YEAR OF 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2020

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            99   07/21        MM      MM       95  07/01
LOWEST              3   01/31        MM      MM        2  01/07
AVG. MAXIMUM     61.5              60.3     1.2     61.5
AVG. MINIMUM     45.3              44.3     1.0     45.8
MEAN             53.4              52.3     1.1     53.7
DAYS MAX >= 90      8               4.8     3.2        8
DAYS MAX <= 32     11              18.3    -7.3       14
DAYS MIN <= 32    107              97.9     9.1      103
DAYS MIN <= 0       0               0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        65.32   1989
 MINIMUM           MM   MM
TOTALS          48.73             46.24    2.49    64.17
DAILY AVG.       0.13              0.13    0.00     0.18
DAYS >= .01       145             118.9    26.1      149
DAYS >= .10        90              75.2    14.8       88
DAYS >= .50        38              30.5     7.5       46
DAYS >= 1.00       10              11.8    -1.8       26
GREATEST
 24 HR. TOTAL    2.18   MM                       12/31 TO 12/31
                                                          12/31 TO 12/31EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          12/31 TO 12/31EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/31(00) TO 12/31(00)
                                                 12/31(00) TO 12/31(00)1EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                 12/31(00) TO 12/31(00)1EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
 24 HR TOTAL     23.4   MM
 SNOW DEPTH        MM   MM
TOTALS           12.8              24.8   -12.0     64.2
 LIQUID EQUIV    1.28              2.50   -1.22     6.42
SINCE 7/1         4.3               5.9    -1.6      4.3
 LIQUID 7/1      0.43              0.60   -0.17     0.43
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE      26              12.3    13.7       32
DAYS >= 1.0         6               7.5    -1.5        9
GREATEST
 SNOW DEPTH         2   12/03                         18  03/22
                        03/02
 24 HR TOTAL      2.0   MM                       12/31 TO 12/31
                                                          12/31 TO 12/31EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          12/31 TO 12/31EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/31(00) TO 12/31(00)
                                                 12/31(00) TO 12/31(00)1EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                 12/31(00) TO 12/31(00)1EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

DEGREE_DAYS
HEATING TOTAL    5091              5426    -335     5128
 SINCE 7/1         MM              1927      MM       MM
COOLING TOTAL     985               787     198     1115
 SINCE 1/1        985               787     198     1115
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.4
RESULTANT WIND SPEED/DIRECTION   2/287
HIGHEST WIND SPEED/DIRECTION    40/300    DATE  10/17
HIGHEST GUST SPEED/DIRECTION    56/270    DATE  02/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           61
NUMBER OF DAYS PC            181
NUMBER OF DAYS CLOUDY        123

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
 54
  1
  0
 10
  9
 30
HAZE                     11

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

$$



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