Climatological Report (Monthly)
Issued by NWS Portland, ME

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
000
CXUS51 KGYX 031756
CLMCON

PWMCLMCON 000
TTAA00 KGYX 031518


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
1256 PM EST WED JAN 3 2018

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1868 TO 2018

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            53   12/06        56      -3       58  12/01
LOWEST            -12   12/31        -2     -10       -9  12/20
AVG. MAXIMUM     30.6              36.3    -5.7     37.5
AVG. MINIMUM     13.7              17.2    -3.5     17.6
MEAN             22.2              26.8    -4.6     27.6
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     16              10.6     5.4        8
DAYS MIN <= 32     31              28.4     2.6       29
DAYS MIN <= 0       7               2.4     4.6        3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.64   1936
 MINIMUM         0.58   1943
TOTALS           3.07              3.20   -0.13     3.32
DAILY AVG.       0.10              0.10    0.00     0.11
DAYS >= .01        12              10.9     1.1       14
DAYS >= .10         7               6.4     0.6        7
DAYS >= .50         2               2.3    -0.3        4
DAYS >= 1.00        0               0.8    -0.8        0
GREATEST
 24 HR. TOTAL    0.73   12/12

SNOWFALL (INCHES)
RECORDS
 TOTAL           44.5   2007
TOTALS           20.1              14.5     5.6     23.2
SINCE 7/1        20.7              17.1     3.6     23.9
SNOWDEPTH AVG.      6
DAYS >= TRACE       8               6.6     1.4       10
DAYS >= 1.0         5               3.8     1.2        5
GREATEST
 SNOW DEPTH        13   12/27
                        12/26
 24 HR TOTAL      5.0   12/25

DEGREE_DAYS
HEATING TOTAL    1321              1186     135     1151
 SINCE 7/1       2522              2746    -224     2403
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        564               452     112      715
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
HIGHEST WIND SPEED/DIRECTION    29/310    DATE  12/28
HIGHEST GUST SPEED/DIRECTION    38/320    DATE  12/28

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 0
RAIN                      2     LIGHT RAIN                 4
FREEZING RAIN             2     LT FREEZING RAIN           2
HEAVY SNOW                1     SNOW                       5
LIGHT SNOW               11     FOG                       16
FOG W/VIS <= 1/4 MILE     5     HAZE                      10

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

&&

THE COLD WEATHER THAT HAD LASTED MUCH OF NOVEMBER BEGAN TO EASE UP
IN EARLY DECEMBER. FOR THE FIRST WEEK OF THE MONTH, CONCORD SAW THE
TEMPERATURE WARM INTO THE 40S AND EVEN THE 50S. THAT WAS SOON TO
CHANGE. THE FIRST SIGNIFICANT SNOWSTORM OF THE SEASON ARRIVED ON
DECEMBER 9 WHEN CONCORD RECEIVED MORE THAN 4 INCHES OF SNOW. ANOTHER
STORM BROUGHT SNOW CHANGING TO FREEZING RAIN A FEW DAYS LATER ON THE
12TH, FOLLOWED BY MUCH COLDER WEATHER. THE TEMPERATURE DID NOT RISE
ABOVE FREEZING AGAIN FOR 7 DAYS. JUST AS TEMPERATURES BEGAN TO WARM
AGAIN, BACK-TO-BACK STORM SYSTEMS BROUGHT SNOW CHANGING TO FREEZING
RAIN ON THE 22ND AND 23RD, FOLLOWED BY A QUICK 5 INCHES OF SNOW ON
CHRISTMAS MORNING. AS THIS LAST STORM EXITED, IT PULLED MUCH COLDER
AIR OUT OF THE ARCTIC BEHIND IT. THE TEMPERATURE STAYED BELOW
FREEZING FOR THE REST OF THE MONTH, WITH THE LAST 5 DAYS OF THE
MONTH FAILING TO RISE ABOVE 20 DEGREES AND FALLING TO ZERO OR COLDER
AT NIGHT.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 22.2 DEGREES WHICH WAS 4.6
DEGREES COLDER THAN NORMAL AND THE COLDEST DECEMBER SINCE 1989. THE
COLDEST DECEMBER ON RECORD WAS IN 1989 WHEN THE AVERAGE TEMPERATURE
WAS 11.9 DEGREES. THE WARMEST WAS IN 2015 WHEN THE AVERAGE
TEMPERATURE WAS 37.7 DEGREES.

A TOTAL OF 3.07 INCHES OF PRECIPITATION FELL WHICH WAS 0.13 INCHES
BELOW NORMAL AND THE DRIEST DECEMBER SINCE 2001. THE HEAVIEST
PRECIPITATION FELL ON DECEMBER 22 AND 23 WHEN 1.12 INCHES OF MELTED
SNOW AND FREEZING RAIN WAS RECORDED. THE DRIEST DECEMBER ON RECORD
WAS IN 1943 WHEN ONLY 0.58 INCHES WAS MEASURED. THE WETTEST WAS IN
1936 WHEN 7.64 INCHES FELL.

A TOTAL OF 20.1 INCHES OF SNOW FELL WHICH WAS 5.6 INCHES ABOVE
NORMAL. THE HEAVIEST SNOW FELL ON CHRISTMAS DAY WHEN 5.0 INCHES WAS
RECORDED DURING THE MORNING OF THE 25TH. THE SNOWIEST DECEMBER ON
RECORD WAS IN 2007 WHEN 45.3 INCHES FELL. THE LEAST AMOUNT OF SNOW
IN DECEMBER WAS ONLY A TRACE IN 1999 AND 1928.

NO DAILY RECORDS WERE SET OR TIED IN DECEMBER 2017.

$$

KIMBLE



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