791
CXUS51 KOKX 011544 RRA
CLMISP

NYCCLMISP 000
TTAA00 OKX 011542

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
1041 AM EST WED JAN 01 2025

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...

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             77   12/07/1998
 LOW                   12/31/1963
HIGHEST           61   12/30         MM      MM       61  12/18
LOWEST            10   12/23         MM      MM       22  12/23
AVG. MAXIMUM    44.4               44.4    -0.0     49.1
AVG. MINIMUM    28.7               29.8    -1.1     35.4
MEAN            36.5               37.1    -0.6     42.2
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     2                2.9    -0.9        0
DAYS MIN <= 32    21               20.9     0.1       11
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.91   1996
 MINIMUM        0.90   1985
TOTALS          6.23               4.71    1.52     8.56
DAILY AVG.      0.20               0.15    0.05     0.28
DAYS >= .01       16               11.8     4.2        8
DAYS >= .10       13                7.8     5.2        7
DAYS >= .50        4                3.3     0.7        5
DAYS >= 1.00       2                1.4     0.6        3
GREATEST
 24 HR. TOTAL   1.68   12/16 TO 12/17               3.07  12/27 TO 12/28
 STORM TOTAL    1.56                                3.04
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL          25.3   2009
 24 HR TOTAL      MM
TOTALS           2.1                4.5    -2.4        T
 LIQUID EQUIV   0.20               0.40   -0.20        T
SINCE 7/1        2.1                5.0    -2.9       MM
 LIQUID 7/1     0.21               0.50   -0.29       MM
DAYS >= TRACE      6                2.6     3.4        1
DAYS >= 1.0        1                1.5    -0.5        0
GREATEST
 SNOW DEPTH        2   12/21                           0  MM
 24 HR TOTAL      MM                                  MM
 STORM TOTAL     2.0                                 0.0
 (MM/DD(HH))            MM

DEGREE DAYS
HEATING TOTAL    873                865       8      698
 SINCE 7/1      1563               1803    -240       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1      1012                885     127       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.8
HIGHEST WIND SPEED/DIRECTION    32/250    DATE  12/12
HIGHEST GUST SPEED/DIRECTION    44/210    DATE  12/04
                                44/250          12/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.57
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       9
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                6     SLEET                      0
FOG                      17     FOG W/VIS <= 1/4 MILE      5
HAZE                      1

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

$$