Climatological Report (Seasonal)
Issued by NWS Boston, MA

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000
CXUS51 KBOX 011741
CLSBOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA

1207 PM EST SAT DEC 1 2018

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

...THE BOSTON MA CLIMATE SUMMARY FOR THE SEASON, FROM
9/1/2018 TO 11/30/2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             102
 LOW               -2
HIGHEST            97   09/06
LOWEST             14   11/22
AVG. MAXIMUM     61.9              61.8     0.1
AVG. MINIMUM     49.0              47.3     1.7
MEAN             55.4              54.5     0.9
DAYS MAX >= 90      3               0.5     2.5
DAYS MAX <= 32      2               0.3     1.7
DAYS MIN <= 32      6               5.7     0.3
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        19.17   1878
 MINIMUM         3.36   1946
TOTALS          18.16             11.37    6.79
DAILY AVG.       0.20              0.12    0.08
DAYS >= .01        41              28.6    12.4
DAYS >= .10        30              18.1    11.9
DAYS >= .50        14               7.7     6.3
DAYS >= 1.00        6               2.9     3.1
GREATEST
 24 HR. TOTAL    1.39   11/03 TO 11/03

SNOWFALL (INCHES)
RECORDS
 TOTAL           17.8   1898
 24 HR TOTAL     12.0   11/27/1898 TO 11/27/1898
 SNOW DEPTH        16   11/30/1898
TOTALS            0.1               1.3    -1.2
 LIQUID EQUIV      MM                MM      MM
SINCE 7/1         0.1               1.3    -1.2
 LIQUID 7/1      0.00                MM      MM
SNOWDEPTH AVG.     MM                MM      MM
DAYS >= TRACE       4               0.9     3.1
DAYS >= 1.0         0               0.4    -0.4
GREATEST
 SNOW DEPTH        MM
 24 HR TOTAL      0.1   11/15 TO 11/15

DEGREE_DAYS
HEATING TOTAL    1024              1041     -17
 SINCE 7/1       1024              1055     -31
COOLING TOTAL     175                88      87
 SINCE 1/1       1132               747     385

FREEZE DATES
RECORD
 EARLIEST     10/05/1881
 LATEST       05/03/1882
EARLIEST                        11/06
LATEST                          04/09
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.1
RESULTANT WIND SPEED/DIRECTION   3/284
HIGHEST WIND SPEED/DIRECTION    39/080    DATE  11/16
HIGHEST GUST SPEED/DIRECTION    51/280    DATE  11/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC             40
NUMBER OF DAYS CLOUDY         39

AVERAGE RH (PERCENT)     69

  WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN               21     RAIN                      29
LIGHT RAIN               45     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                5     SLEET                      0
FOG                      42     FOG W/VIS <= 1/4 MILE      2
HAZE                     14

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

$$


                             BOSTON

            ...PERIOD OF RECORD: 1872 TO PRESENT...

       AVG HIGH  AVG LOW  AVG MEAN  PCPN  SNOW  REMARKS
       --------  -------  --------  ----  ----  -------

SEP:      75.2     62.8     69.0    5.12   0.0  4TH WARMEST
          +2.8     +5.4     +4.1   +1.68

OCT:      61.7     47.2     54.5    3.78   0.0
          +0.3     +0.7     +0.5   -0.16

NOV:      48.9     37.0     42.9    9.26   0.1  3RD WETTEST
          -2.6     -1.0     -1.8   +5.27  -1.2

SEASONAL SUMMARY
------------------
AUTUMN:   61.9     49.0     55.4   18.16   0.1  4TH WETTEST
          +0.1     +1.7     +0.9   +6.79  -1.2

DAILY RECORDS
-------------
09/04...RECORD MAXIMUM LOW TEMPERATURE..............73...PREV 70 IN 1959, 1900
09/06...RECORD HIGH TEMPERATURE.....................97...PREV 94 IN 1983
09/18...TIED MAXIMUM LOW TEMPERATURE................69...ALSO SET IN 1992

10/10...RECORD MAXIMUM LOW TEMPERATURE..............68...PREV 65 IN 2017

11/22...TIED MINIMUM HIGH TEMPERATURE...............24...ALSO SET IN 1880

MONTHLY RECORDS
---------------
SEP...RECORD NO. OF DAYS LOW TEMP >= 60.............21...PREV 19 IN 1971, 1961
SEP...TIED RECORD NO. OF DAYS LOW TEMP >= 70.........4...LAST SET 1983

NOV...RECORD NO. OF DAYS DAILY PRECIP >= 0.10.......14...PREV 12 IN 1985, 1921
NOV...TIED RECORD NO. OF DAYS DAILY PRECIP >= 0.50...7...ALSO SET IN 1969

SEASONAL RECORDS
----------------
AUTUMN...RECORD NO. OF DAYS DAILY PRECIP >= 0.10........30...PREV 26 IN 1977
AUTUMN...TIED RECORD NO. OF DAYS DAILY PRECIP >= 0.50...14...ALSO SET IN 1958
AUTUMN...TIED RECORD NO. OF DAYS LOW TEMP >= 70..........4...LAST SET IN 1983


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