Climatological Report (Monthly)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
315 PM EST TUE JAN 3 2017

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1868 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              73   12/07/1998
 LOW              -24   12/20/1875
HIGHEST            58   12/01        56       2       62  12/25
LOWEST             -9   12/20        -2      -7       17  12/01
AVG. MAXIMUM     37.5              36.3     1.2     45.6
AVG. MINIMUM     17.6              17.2     0.4     29.8
MEAN             27.6              26.8     0.8     37.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      8              10.6    -2.6        2
DAYS MIN <= 32     29              28.4     0.6       20
DAYS MIN <= 0       3               2.4     0.6        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.64   1936
 MINIMUM         0.58   1943
TOTALS           3.32              3.20    0.12     4.78
DAILY AVG.       0.11              0.10    0.01     0.15
DAYS >= .01        14              10.9     3.1       16
DAYS >= .10         7               6.4     0.6       10
DAYS >= .50         4               2.3     1.7        3
DAYS >= 1.00        0               0.8    -0.8        1
GREATEST
 24 HR. TOTAL    1.04   11/30 TO 12/01

SNOWFALL (INCHES)
RECORDS
 TOTAL           44.5   2007
TOTALS           23.2              14.5     8.7      4.4
SINCE 7/1        23.9              17.1     6.8      4.4
SNOWDEPTH AVG.      6
DAYS >= TRACE      10               6.6     3.4        4
DAYS >= 1.0         5               3.8     1.2        1
GREATEST
 SNOW DEPTH        15   12/30
 24 HR TOTAL      8.3   12/29 TO 12/29

DEGREE_DAYS
HEATING TOTAL    1151              1186     -35      834
 SINCE 7/1       2403              2746    -343     2114
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        715               452     263      595
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.2
HIGHEST WIND SPEED/DIRECTION    32/320    DATE  12/25
HIGHEST GUST SPEED/DIRECTION    41/320    DATE  12/25

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 1
RAIN                      2     LIGHT RAIN                 5
FREEZING RAIN             1     LT FREEZING RAIN           1
HEAVY SNOW                4     SNOW                       6
LIGHT SNOW               11     FOG                       17
FOG W/VIS <= 1/4 MILE     8     HAZE                       7

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

&&

DECEMBER STARTED OFF ON A WARM NOTE AT CONCORD AS THE FIRST TWO DAYS
OF THE MONTH SAW THE TEMPERATURE TOP 50 DEGREES. SOON THERE WAS A
SHIFT TOWARD COOLER WEATHER WITH A MORE ACTIVE WEATHER PATTERN
BRINGING A NEW STORM SYSTEM THROUGH THE AREA EVERY FEW DAYS FOR THE
REST OF THE MONTH, OFTEN RESULTING IN SNOWFALL. THE FIRST 2 INCHES
FELL ON THE 5TH WITH ANOTHER 4 INCHES ON THE 12TH. NOT LONG
AFTERWARDS AN ARCTIC AIR MASS BROUGHT VERY COLD EARLY SEASON
TEMPERATURES INCLUDING THE FIRST SUBZERO TEMPERATURE OF THE SEASON
ON THE 16TH. ANOTHER SNOWSTORM BROUGHT MORE THAN 4 INCHES OF SNOW ON
THE 17TH, BUT A BRIEF WARMUP FOLLOWED WHEN THE TEMPERATURE SOARED
INTO THE LOW 50S THE NEXT DAY. THE ARCTIC AIR POURED BACK IN AGAIN
ON THE 19TH WITH TWO MORE DAYS RECORDING SUBZERO TEMPERATURES. BY
THE 21ST THE BRUTAL COLD HAD EASED UP AND TEMPERATURES WERE NEAR OR
ABOVE NORMAL FOR THE REST OF THE MONTH, BUT NOT WARM ENOUGH TO
PREVENT THE FIRST WHITE CHRISTMAS IN 3 YEARS. AN INTENSIFYING LOW
PRESSURE SYSTEM TRACKING NEAR THE AREA ON THE 29TH BROUGHT MORE THAN
8 INCHES OF HEAVY SNOW, MUCH OF THAT OCCURRING IN JUST A FEW HOURS
THAT EVENING.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 27.6 DEGREES WHICH WAS 0.8
DEGREES ABOVE NORMAL, MARKING THE 8TH CONSECUTIVE MONTH OF ABOVE
NORMAL TEMPERATURES AT CONCORD DATING BACK TO APRIL. ALTHOUGH
DECEMBER WAS ABOVE NORMAL, IT WAS MORE THAN 10 DEGREES COLDER THAN
LAST DECEMBER WHEN CONCORD EXPERIENCED ITS WARMEST DECEMBER ON
RECORD. THE AVERAGE TEMPERATURE IN DECEMBER 2015 WAS 37.7 DEGREES.
THE COLDEST DECEMBER WAS IN 1989 WHEN THE AVERAGE TEMPERATURE WAS
ONLY 11.9 DEGREES.

A TOTAL OF 3.32 INCHES OF PRECIPITATION FELL WHICH WAS 0.12 INCHES
ABOVE NORMAL. ALTHOUGH IT WAS ABOVE NORMAL, IT WAS ALSO THE DRIEST
DECEMBER SINCE 2001 AS CONCORD HAS SEEN 15 STRAIGHT YEARS WITH ABOVE
NORMAL PRECIPITATION IN DECEMBER. THE WETTEST DECEMBER ON RECORD WAS
IN 1936 WHEN 7.64 INCHES OF PRECIPITATION WAS RECORDED. THE DRIEST
WAS IN 1943 WITH ONLY 0.58 INCHES.

THERE WAS A TOTAL OF 23.2 INCHES OF SNOWFALL WHICH WAS 8.7 INCHES
ABOVE NORMAL. THERE WERE 3 SNOWSTORMS WHICH DROPPED MORE THAN 4
INCHES OF SNOWFALL ON THE 12TH, 17TH, AND 29TH. THE HEAVIEST WAS ON
THE 29TH WHEN 8.3 INCHES WAS MEASURED. THE SNOWIEST DECEMBER ON
RECORD WAS 2007 WHEN 45.3 INCHES WAS RECORDED. THERE HAVE BEEN TWO
DECEMBERS WHICH RECORDED ONLY A TRACE OF SNOW, 1999 AND 1928.

THERE WERE NO DAILY RECORDS SET OR TIED IN DECEMBER 2016.

$$

KIMBLE


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