474
CXUS51 KOKX 010916
CLMISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
516 AM EDT THU MAY 01 2025

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             94   04/17/2002
 LOW              16   04/01/1969
HIGHEST           76   04/19         MM      MM       82  04/29
                       04/28
LOWEST            31   04/09         MM      MM       33  04/26
AVG. MAXIMUM    61.3               58.3     3.0     58.7
AVG. MINIMUM    44.3               41.2     3.1     42.4
MEAN            52.8               49.7     3.1     50.5
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     1                3.3    -2.3        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.09   1983
 MINIMUM        0.98   1978
TOTALS          1.98               4.06   -2.08     3.45
DAILY AVG.      0.07               0.14   -0.07     0.12
DAYS >= .01       12               11.3     0.7       12
DAYS >= .10       10                6.8     3.2        7
DAYS >= .50        1                2.5    -1.5        2
DAYS >= 1.00       0                1.0    -1.0        1
GREATEST
 24 HR. TOTAL   0.61   03/31 TO 04/01               1.42  04/03 TO 04/04
 STORM TOTAL    0.55                                1.32
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL          16.0   1982
 24 HR TOTAL    16.0   MM
TOTALS           0.0                0.6    -0.6      0.0
 LIQUID EQUIV   0.00               0.00    0.00     0.00
SINCE 7/1       11.7               31.8   -20.1       MM
 LIQUID 7/1     1.17               3.10   -1.93       MM
DAYS >= TRACE      0                0.3    -0.3        0
DAYS >= 1.0        0                0.2    -0.2        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL      MM                                  MM
 STORM TOTAL     0.0                                 0.0
 (MM/DD(HH))            MM

DEGREE DAYS
HEATING TOTAL    359                460    -101      434
 SINCE 7/1      4455               4959    -504       MM
COOLING TOTAL      0                  2      -2        4
 SINCE 1/1         0                  2      -2       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.4
HIGHEST WIND SPEED/DIRECTION    33/320    DATE  04/08
HIGHEST GUST SPEED/DIRECTION    48/040    DATE  04/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.64
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       4
LIGHT RAIN               20     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      2
HAZE                      3

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

$$