Climatological Report (Annual)
Issued by NWS Upton, NY

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158
CXUS51 KOKX 021428
CLAISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
912 AM EST TUE JAN 02 2024

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE YEAR OF 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            104   07/03/1966
 LOW             -14   02/13/1967
HIGHEST           92   09/06         MM      MM       95  07/20
                       09/07
LOWEST             3   02/04         MM      MM        6  01/30
                                                          01/31
AVG. MAXIMUM    63.5               61.1     2.4     62.9
AVG. MINIMUM    47.2               45.2     2.0     45.8
MEAN            55.4               53.1     2.3     54.3
DAYS MAX >= 90     5                8.3    -3.3       13
DAYS MAX <= 32     2               16.4   -14.4       17
DAYS MIN <= 32    72               98.3   -26.3       95
DAYS MIN <= 0      0                0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       65.32   1989
 MINIMUM          MM   MM
TOTALS         50.19              45.99    4.20    39.61
DAILY AVG.      0.14               0.13    0.01     0.11
DAYS >= .01      128              122.0     6.0      114
DAYS >= .10       80               75.7     4.3       71
DAYS >= .50       28               30.6    -2.6       27
DAYS >= 1.00      17               11.5     5.5        5
GREATEST
 24 HR. TOTAL   4.65                                1.79  12/06 TO 12/07
 STORM TOTAL    4.65                                1.63
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL          71.0   1978
 24 HR TOTAL      MM
 SNOW DEPTH       26   02/09/1978
                       02/08/1978
TOTALS           4.6               31.8   -27.2     37.1
 LIQUID EQUIV   0.50               3.10   -2.60     3.70
SINCE 7/1          T                5.0    -5.0       MM
 LIQUID 7/1    -0.10               0.50   -0.60       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE     19               13.4     5.6       10
DAYS >= 1.0        2                7.9    -5.9        2
GREATEST
 SNOW DEPTH        3   02/28                          24  01/30
 24 HR TOTAL     3.0    MM                           0.0
 STORM TOTAL     1.8                                23.2
 (MM/DD(HH))            MM

DEGREE DAYS
HEATING TOTAL   4352               5183    -831     4904
 SINCE 7/1      1587               1803    -216       MM
COOLING TOTAL    955                885      70     1136
 SINCE 1/1       955                885      70       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.7
RESULTANT WIND SPEED/DIRECTION   2/280
HIGHEST WIND SPEED/DIRECTION    40/320    DATE  02/03
HIGHEST GUST SPEED/DIRECTION    52/290    DATE  02/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.58
NUMBER OF DAYS FAIR           81
NUMBER OF DAYS PC            178
NUMBER OF DAYS CLOUDY        106

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             27     MIXED PRECIP               0
HEAVY RAIN               35     RAIN                      55
LIGHT RAIN              155     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW               16     SLEET                      5
FOG                     163     FOG W/VIS <= 1/4 MILE     33
HAZE                     22

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

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