Climatological Report (Monthly)
Issued by NWS Upton, NY

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000
CXUS51 KOKX 021639 CCA
CLMLGA

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1138 AM EST TUE JAN 2 2018

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

...THE LAGUARDIA NY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1939 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              75   12/07/1998
 LOW               -2   12/20/1942
HIGHEST            60   12/05        MM      MM       62  12/27
LOWEST             10   12/31        MM      MM       19  12/16
AVG. MAXIMUM     41.1              44.3    -3.2     45.7
AVG. MINIMUM     31.3              32.1    -0.8     34.9
MEAN             36.2              38.2    -2.0     40.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      7               2.8     4.2        1
DAYS MIN <= 32     14              14.2    -0.2        8
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.70   1973
 MINIMUM         0.31   1955
TOTALS           2.06              3.56   -1.50     2.95
DAILY AVG.       0.07              0.11   -0.04     0.10
DAYS >= .01         9              10.5    -1.5       10
DAYS >= .10         5               6.6    -1.6        6
DAYS >= .50         2               2.7    -0.7        3
DAYS >= 1.00        0               0.9    -0.9        0
GREATEST
 24 HR. TOTAL    0.69   12/05 TO 12/05           11/30 TO 12/01
                                                          12/01 TO 12/01
                                                          12/01 TO 12/01
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/01(00) TO 12/01(00)
                                                 12/01(00) TO 12/01(00)1
                                                 12/01(00) TO 12/01(00)1

SNOWFALL (INCHES)
RECORDS
 TOTAL           22.3   1948
                        0
                        0
 24 HR TOTAL       MM
TOTALS            8.0               5.2     2.8      3.0
 LIQUID EQUIV    0.80              0.50    0.30     0.30
SINCE 7/1         8.0               5.5     2.5      3.0
 LIQUID 7/1      0.80              0.60             0.30
DAYS >= TRACE       8               2.6     5.4        3
DAYS >= 1.0         3               1.2     1.8        1
GREATEST
 SNOW DEPTH         4   12/10                          2  12/17
 24 HR TOTAL      4.6   12/09 TO 12/09           12/01 TO 12/01
                                                          12/01 TO 12/01
                                                          12/01 TO 12/01
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/01(00) TO 12/01(00)
                                                 12/01(00) TO 12/01(00)1
                                                 12/01(00) TO 12/01(00)1

DEGREE_DAYS
HEATING TOTAL     885               831      54      758
 SINCE 7/1       1476              1606    -130     1296
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1439              1214     225     1745
..................................................

WIND (MPH)
AVERAGE WIND SPEED              12.0
HIGHEST WIND SPEED/DIRECTION    37/280    DATE  12/25
HIGHEST GUST SPEED/DIRECTION    55/270    DATE  12/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC             19
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                7     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      0
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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