Climatological Report (Annual)
Issued by NWS Upton, NY

000
CXUS51 KOKX 090551
CLAISP

NYCCLAISP 000
TTAA00 OKX 090409

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW YORK, NY
1043 PM EST FRI JAN 08 2021

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE YEAR OF 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2021

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           95   07/27         MM      MM       99  07/21
                       07/28
LOWEST            13   02/15         MM      MM        3  01/31
AVG. MAXIMUM    63.0               60.3     2.7     61.5
AVG. MINIMUM    46.8               44.3     2.5     45.3
MEAN            54.9               52.3     2.6     53.4
DAYS MAX >= 90     8                4.8     3.2        8
DAYS MAX <= 32     5               18.3   -13.3       11
DAYS MIN <= 32    73               97.9   -24.9      107
DAYS MIN <= 0      0                0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       65.32   1989
 MINIMUM          MM   MM
TOTALS         43.46              46.24   -2.78    48.73
DAILY AVG.      0.12               0.13   -0.01     0.13
DAYS >= .01      129              118.9    10.1      145
DAYS >= .10       79               75.2     3.8       90
DAYS >= .50       28               30.5    -2.5       38
DAYS >= 1.00       8               11.8    -3.8       10
GREATEST
 24 HR. TOTAL   2.75   09/10 TO 09/10               2.18
 STORM TOTAL      MM                                  MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL            MM   MM
 24 HR TOTAL    23.4   01/23/2016
 SNOW DEPTH       26   02/09/1978
TOTALS          10.0               24.8   -14.8     12.8
 LIQUID EQUIV   1.00               2.40   -1.40     1.30
SINCE 7/1        7.5                5.9     1.6       MM
 LIQUID 7/1     0.75               0.50    0.25       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE     15               12.3     2.7       26
DAYS >= 1.0        3                7.5    -4.5        6
GREATEST
 SNOW DEPTH        5   12/18                           2  03/02
                                                          12/03
 24 HR TOTAL     7.4   12/16 TO 12/17                2.0  02/12 TO 02/12
 STORM TOTAL     7.4                                  MM
 (MM/DD(HH))            MM

DEGREE DAYS
HEATING TOTAL   4644               5426    -782     5091
 SINCE 7/1      1624               1926    -302       MM
COOLING TOTAL   1059                787     272      985
 SINCE 1/1      1059                787     272      985
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.3
RESULTANT WIND SPEED/DIRECTION   2/270
HIGHEST WIND SPEED/DIRECTION    49/170    DATE  08/04
HIGHEST GUST SPEED/DIRECTION    69/210    DATE  08/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.61
NUMBER OF DAYS FAIR           58
NUMBER OF DAYS PC            191
NUMBER OF DAYS CLOUDY        117

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             29     MIXED PRECIP               0
HEAVY RAIN               38     RAIN                      54
LIGHT RAIN              159     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       2
HEAVY SNOW                1     SNOW                       5
LIGHT SNOW               12     SLEET                      4
FOG                     166     FOG W/VIS <= 1/4 MILE     39
HAZE                     11

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

$$