Climatological Report (Annual)
Issued by NWS Upton, NY

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8

000
CXUS51 KOKX 032352
CLAISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
650 PM EST MON JAN 3 2011


THE ISLIP NY CLIMATE SUMMARY FOR THE YEAR OF 2010...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1986 TO 2011

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             102   07/05/1999
 LOW               -7   01/15/1988
                        01/22/1984
HIGHEST           101   07/06        MM      MM       91  08/10
LOWEST             12   01/30        MM      MM        2  01/17
AVG. MAXIMUM     62.2              61.3     0.9     59.5
AVG. MINIMUM     45.7              43.6     2.1     44.1
MEAN             54.0              52.5     1.5     51.8
DAYS MAX >= 90     17               7.2     9.8        3
DAYS MAX <= 32     18              17.3     0.7       25
DAYS MIN <= 32     95              98.3    -3.3      100
DAYS MIN <= 0       0               0.3    -0.3        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        65.32   1989
 MINIMUM        34.41   1985
TOTALS          44.02             46.52   -2.50    52.70
DAILY AVG.       0.12              0.13   -0.01     0.14
DAYS >= .01       103             119.2   -16.2      134
DAYS >= .10        65              75.4   -10.4       90
DAYS >= .50        27              30.8    -3.8       42
DAYS >= 1.00       12              11.7     0.3       15
GREATEST
 24 HR. TOTAL    2.66   03/29                       2.23  07/23
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL           59.9   2005
 24 HR TOTAL     16.7   02/12/2006
 SNOW DEPTH        22   12/21/2009
TOTALS           43.4                MM      MM     51.1
 LIQUID EQUIV    4.34                MM      MM     5.11
SINCE 7/1        14.9                MM      MM     25.3
 LIQUID 7/1      1.49                MM      MM     2.53
SNOWDEPTH AVG.      1                MM      MM        1
DAYS >= TRACE      35                MM      MM       28
DAYS >= 1.0         7               7.2    -0.2       10
GREATEST
 SNOW DEPTH        14   12/27                         22  12/21
 24 HR TOTAL     11.3   12/26                       14.3  12/20
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))

DEGREE_DAYS
HEATING TOTAL    5014              5387    -373     5356
 SINCE 7/1       1917              1902      15     1837
COOLING TOTAL    1127               770     357      657
 SINCE 1/1       1127               770     357      657
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
RESULTANT WIND SPEED/DIRECTION   3/296
HIGHEST WIND SPEED/DIRECTION    46/010    DATE  12/26
HIGHEST GUST SPEED/DIRECTION    64/360    DATE  12/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

NUMBER OF DAYS FAIR           82
NUMBER OF DAYS PC            166
NUMBER OF DAYS CLOUDY        117

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             21     MIXED PRECIP               1
HEAVY RAIN               22     RAIN                      41
LIGHT RAIN              119     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       2
HEAVY SNOW                3     SNOW                      11
LIGHT SNOW               33     SLEET                      7
FOG                     127     FOG W/VIS <= 1/4 MILE     13
HAZE                    119

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

$$






USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.