Climatological Report (Monthly)
Issued by NWS Upton, NY

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659
CXUS51 KOKX 011622
CLMISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1222 PM EDT FRI MAY 1 2015

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1986 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              94   MM
 LOW               23   MM
HIGHEST            75   04/29        MM      MM       69  04/12
                        04/18
LOWEST             28   04/02        MM      MM       29  04/10
AVG. MAXIMUM     58.6              57.6     1.0     58.1
AVG. MINIMUM     40.0              40.6    -0.6     39.5
MEAN             49.3              49.1     0.2     48.8
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      5               3.0     2.0        3
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.37   1998
 MINIMUM         1.29   1992
TOTALS           1.66              4.34   -2.68     4.84
DAILY AVG.       0.06              0.14   -0.08     0.16
DAYS >= .01         9              11.3    -2.3       12
DAYS >= .10         6               7.0    -1.0        6
DAYS >= .50         1               2.6    -1.6        4
DAYS >= 1.00        0               1.1    -1.1        1
GREATEST
 24 HR. TOTAL    0.86   04/20 TO 04/21           04/30 TO 04/30
                                                          04/30 TO 04/30
                                                          04/30 TO 04/30
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/30(00) TO 04/30(00)
                                                 04/30(00) TO 04/30(00)0
                                                 04/30(00) TO 04/30(00)0

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
TOTALS            0.0               0.6    -0.6      0.2
 LIQUID EQUIV    0.00              0.10   -0.10     0.02
SINCE 7/1        63.7              24.8    38.9     63.7
 LIQUID 7/1      6.37              2.50    3.87     6.37
DAYS >= TRACE       0               0.3    -0.3        2
DAYS >= 1.0         0               0.2    -0.2        0
GREATEST
 SNOW DEPTH         0   MM                             1  04/01
 24 HR TOTAL      0.0   04/30 TO 04/30           04/30 TO 04/30
                                                          04/30 TO 04/30
                                                          04/30 TO 04/30
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/30(00) TO 04/30(00)
                                                 04/30(00) TO 04/30(00)0
                                                 04/30(00) TO 04/30(00)0

DEGREE_DAYS
HEATING TOTAL     463               479     -16      480
 SINCE 7/1       5399              5171     228     5330
COOLING TOTAL       0                 2      -2        0
 SINCE 1/1          0                 2      -2        0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.0
HIGHEST WIND SPEED/DIRECTION    36/110    DATE  04/20
HIGHEST GUST SPEED/DIRECTION    50/320    DATE  04/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               11     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      4
HAZE                      1

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

$$



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