Climatological Report (Monthly)
Issued by NWS Caribou, ME

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CXUS51 KCAR 072251
CLMBGR

CLIMATE REPORT
NATIONAL WEATHER SERVICE CARIBOU, ME
953 AM EST WED JAN 4 2017

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

...THE BANGOR ME CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1925 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              65   12/08/1998
                        12/04/1982
 LOW              -27   12/16/1943
HIGHEST            49   12/27        MM      MM       54  12/25
LOWEST            -14   12/16        MM      MM       10  12/29
AVG. MAXIMUM     32.2              33.7    -1.5     41.4
AVG. MINIMUM     12.3              15.5    -3.2     26.6
MEAN             22.3              24.6    -2.3     34.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     15              13.4     1.6        4
DAYS MIN <= 32     30              29.1     0.9       24
DAYS MIN <= 0       5               3.0     2.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.14   1969
 MINIMUM         0.93   1955
TOTALS           3.77                      0.29
DAILY AVG.       0.12              0.11    0.01     0.13
DAYS >= .01        15              12.0     3.0       16
DAYS >= .10         9               6.8     2.2        9
DAYS >= .50         2               2.1    -0.1        2
DAYS >= 1.00        0               0.7    -0.7        1
GREATEST
 24 HR. TOTAL    0.86   12/29 TO 12/30           12/15 TO 12/15
                                                          12/15 TO 12/15
                                                          12/15 TO 12/15

SNOWFALL (INCHES)
RECORDS
 TOTAL           50.9   1927
TOTALS           18.4              14.4     4.0     11.1
SINCE 7/1        19.9              16.8     3.1     13.6
SNOWDEPTH AVG.      2                 4      -2        1
DAYS >= 1.0         6               4.0     2.0        3
GREATEST
 SNOW DEPTH         7   12/18                          9  12/31
                                                          12/30
 24 HR TOTAL      4.8   MM                       12/15 TO 12/15
                                                          12/15 TO 12/15
                                                          12/15 TO 12/15

DEGREE_DAYS
HEATING TOTAL    1319              1252      67      953
 SINCE 7/1       2738              2921    -183     2454
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        448               318     130      406
......................................................

WIND (MPH)
AVERAGE WIND SPEED              6.5
HIGHEST WIND SPEED/DIRECTION    32/330    DATE  12/25
HIGHEST GUST SPEED/DIRECTION    44/320    DATE  12/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                3     SNOW                       5
LIGHT SNOW               16     SLEET                      1
FOG                      22     FOG W/VIS <= 1/4 MILE      6
HAZE                      4

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.
---------------------------------------------------------------------
...DECEMBER 2016 NORTHERN AND EASTERN MAINE CLIMATE NARRATIVE...

DECEMBER 2016 WILL BE REMEMBERED FOR BELOW AVERAGE TEMPERATURES AND
ABOVE AVERAGE PRECIPITATION...AND SNOWFALL.

TEMPERATURES AVERAGED FROM 1 TO 3 DEGREES BELOW AVERAGE ACROSS
NORTHERN AND EASTERN MAINE.  AT CARIBOU, THE AVERAGE TEMPERATURE OF
16.6 DEGREES WAS 1.6 DEGREES BELOW THE 30-YEAR (1981-2010) AVERAGE,
AND IT WAS THE COLDEST DECEMBER SINCE 2013. AT BANGOR, THE AVERAGE
TEMPERATURE OF 22.3 DEGREES WAS 2.3 DEGREES BELOW AVERAGE, AND WAS
ALSO THE COLDEST DECEMBER SINCE 2013.

THERE WERE A TOTAL OF 9 NIGHTS WITH A LOW TEMPERATURE BELOW ZERO AT
CARIBOU, WHICH WAS SLIGHTLY ABOVE THE LONG TERM AVERAGE OF 7.  AT
BANGOR, THERE WERE 5 NIGHTS WITH A LOW TEMPERATURE BELOW ZERO, WHICH
EQUALLED THE LONG TERM AVERAGE OF 5, AND WAS THE MOST SUB-ZERO LOWS
DURING THE MONTH OF DECEMBER SINCE 1993 WHEN THERE WERE ALSO 5
NIGHTS WITH A SUB-ZERO LOW.

SNOWFALL WAS WELL ABOVE AVERAGE.  AT CARIBOU, THERE WAS A TOTAL OF
41.2 INCHES OF SNOW WHICH WAS 18.3 INCHES ABOVE AVERAGE, AND IT
RANKED AS THE 7TH SNOWIEST DECEMBER ON RECORD AT CARIBOU.  IT ALSO
JOINED THE 40+ INCH CLUB.  OVER THE YEARS, THERE HAVE ONLY BEEN 19
MONTHS WITH 40 INCHES OR MORE OF SNOW. THERE WERE A TOTAL OF 20 DAYS
WITH MEASURABLE SNOWFALL AT CARIBOU, WHICH WAS THE 2ND MOST ON
RECORD BEHIND ONLY 2013 WHEN THERE WERE 23 DAYS WITH MEASURABLE
SNOWFALL.  THIS WAS WELL ABOVE THE LONG TERM AVERAGE OF 12 DAYS. THE
SNOW DEPTH OF 27 INCHES AT CARIBOU ON THE 30TH WAS THE 6TH GREATEST
SNOW DEPTH EVER OBSERVED AT CARIBOU DURING THE MONTH OF DECEMBER.

AT BANGOR, THERE WAS A TOTAL OF 18.4 INCHES OF SNOW, WHICH WAS 4
INCHES ABOVE AVERAGE. THERE WERE A TOTAL OF 7 DAYS WITH MEASURABLE
SNOWFALL, WHICH WAS CLOSE TO THE LONG TERM AVERAGE OF 6.

TOTAL PRECIPITATION FOR THE MONTH RANGED FROM 100 TO 150 PERCENT OF
AVERAGE ACROSS THE REGION, WITH THE EXCEPTION OF PORTIONS OF
WASHINGTON COUNTY WHERE PRECIPITATION RANGED FROM 75 TO 100 PERCENT
OF NORMAL.

SNOW DEPTH AT THE END OF DECEMBER RANGED FROM 20 TO 30 INCHES ACROSS
FAR NORTHERN MAINE AND THE NORTH WOODS WITH LOCALLY HIGHER AMOUNTS
LIKELY ACROSS THE HIGHER TERRAIN, 10 TO 20 INCHES ACROSS MOST OF
CENTRAL MAINE, AND GENERALLY FROM 1 TO 5 INCHES ACROSS THE DOWN EAST
REGION.

THE CLIMATE PREDICTION CENTER OUTLOOK FOR JANUARY CALLS FOR SLIGHTLY
GREATER PROBABILITIES FROM CLIMATOLOGY OF ABOVE AVERAGE
TEMPERATURES.  THERE ARE NO STRONG CLIMATE SIGNALS THAT WOULD POINT
TOWARD AN UNUSUALLY WET (SNOWY) OR DRY MONTH.  ON AVERAGE, SNOWFALL
DURING THE MONTH OF JANUARY RANGES FROM AROUND 2 FEET ACROSS THE
CROWN OF MAINE, WITH HIGHER AMOUNTS ACROSS THE HIGHER TERRAIN,
AND AROUND 1 1/2 FEET ACROSS THE DOWNEAST REGION.

TEMPERATURES REACH THEIR ANNUAL AVERAGE LOWS DURING THE MONTH OF
JANUARY WITH HIGHS IN THE TEENS ACROSS THE SAINT JOHN VALLEY TO THE
UPPER 20S IN THE BANGOR REGION.  AVERAGE LOWS BOTTOM OUT JUST BELOW
ZERO IN THE SAINT JOHN VALLEY TO THE SINGLE DIGITS ABOVE ZERO ACROSS
THE DOWN EAST REGION.  THERE IS A GAIN OF ABOUT 1 HOUR OF AVAILABLE
DAYLIGHT DURING THE MONTH OF JANUARY.

$$

CB/VJN



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