Climatological Report (Annual)
Issued by NWS Portland, ME

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CLACON

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TTAA00 KGYX 031520


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
1107 AM EST TUE JAN 9 2018

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE YEAR OF 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             102   07/03/1966
                        07/04/1911
 LOW              -37   02/16/1943
HIGHEST            97   06/12        96       1       99  08/12
LOWEST            -12   12/31       -15       3      -13  02/14
AVG. MAXIMUM     59.3              58.0     1.3     61.4
AVG. MINIMUM     37.1              34.8     2.3     37.2
MEAN             48.2              46.4     1.8     49.3
DAYS MAX >= 90     15              11.5     3.5       25
DAYS MAX <= 32     39              45.3    -6.3       31
DAYS MIN <= 32    150             167.0   -17.0      157
DAYS MIN <= 0      11              14.8    -3.8        8

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        57.99   2008
 MINIMUM        24.17   1965
TOTALS          44.19             40.61    3.58    33.07
DAILY AVG.       0.12              0.11    0.01     0.09
DAYS >= .01       135             130.9     4.1      127
DAYS >= .10        84              78.4     5.6       72
DAYS >= .50        30              27.0     3.0       24
DAYS >= 1.00       10               9.3     0.7        4
GREATEST
 24 HR. TOTAL    3.22   10/24 TO 10/25

SNOWFALL (INCHES)
RECORDS
 TOTAL          128.4   1956
TOTALS           83.1              61.4    21.7     49.2
SINCE 7/1        20.7              17.1     3.6     23.9
SNOWDEPTH AVG.      4
DAYS >= TRACE      47              30.0    17.0       44
DAYS >= 1.0        19              16.2     2.8       12
GREATEST
 SNOW DEPTH        24   02/16
                        02/13
 24 HR TOTAL     15.6   03/14

DEGREE_DAYS
HEATING TOTAL    6595              7236    -641     6349
 SINCE 7/1       2522              2746    -224     2403
COOLING TOTAL     564               452     112      715

FREEZE DATES
RECORD
 EARLIEST     08/29/1986
 LATEST       06/26/1979
EARLIEST        10/13             09/27
LATEST          05/09             05/14
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.0
HIGHEST WIND SPEED/DIRECTION    35/320    DATE  11/26
HIGHEST GUST SPEED/DIRECTION    50/130    DATE  10/30

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             19     HEAVY RAIN                31
RAIN                     54     LIGHT RAIN               127
FREEZING RAIN             4     LT FREEZING RAIN           5
HEAVY SNOW                3     SNOW                      13
LIGHT SNOW               45     FOG                      195
FOG W/VIS <= 1/4 MILE    45     HAZE                      42

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

&&

THE YEAR 2017 WAS MUCH WARMER THAN NORMAL OVERALL AS WELL AS WETTER
THAN NORMAL. IT FEATURED A VERY WARM JANUARY, A VERY COLD AND SNOWY
STRETCH IN FEBRUARY, A MARCH BLIZZARD, A COLD SPRING, A VERY WARM
FALL, HEAVY RAINS AND WINDS IN OCTOBER, AND A VERY COLD DECEMBER.

THE YEAR STARTED OUT WITH SOME WARMER THAN NORMAL WEATHER. ALTHOUGH
A COLD FRONT ON JANUARY 5 BROUGHT A FEW DAYS OF COLD WEATHER, THE
JANUARY THAW COMMENCED SOON AFTER. THE TEMPERATURE TOPPED 50 DEGREES
FOR 3 STRAIGHT DAYS FROM JANUARY 11 THRU 13. ALTHOUGH THERE WERE A
FEW MORE PERIODS OF SNOW AND WINTRY PRECIPITATION, THE WARM TREND
CONTINUED INTO FEBRUARY. A REMARKABLY SNOWY STRETCH OF WEATHER BEGAN
ON FEBRUARY 7. MULTIPLE BACK TO BACK STORM SYSTEMS BROUGHT SEVERAL
ROUNDS OF SNOWFALL. SNOW WAS OBSERVED ON 9 OUT OF 10 DAYS FROM
FEBRUARY 7 THRU 16, TOTALING MORE THAN 22 INCHES. BUT THE WARM
WEATHER CAME RIGHT BACK. JUST TWO DAYS AFTER THE SNOW ENDED, THE
TEMPERATURE AGAIN REACHED 50 DEGREES. BY THE END OF FEBRUARY CONCORD
HAD 3 STRAIGHT DAYS IN THE 60S, INCLUDING 69 DEGREES ON FEBRUARY 24,
THE WARMEST TEMPERATURE EVER OBSERVED IN THE MONTH OF FEBRUARY. THE
FOLLOWING TABLE LISTS THE WARMEST TEMPERATURES OBSERVED IN FEBRUARY.

WARMEST FEBRUARY TEMPERATURE (SINCE 1868)...
RANK  TEMP  DATE
1      69   FEB 24, 2017 <===
2      68   FEB 25, 2017 <===
       68   FEB 27, 1880
       68   FEB 12, 1872
5      67   FEB 22, 1997
6      66   FEB 26, 1957
       66   FEB 20, 1930
8      65   FEB 23, 2017 <===
       65   FEB 9, 1886
       65   FEB 28, 1877

AFTER ONE MORE 60 DEGREE DAY ON MARCH 1, THE WEATHER BEGAN TO TURN
COLDER. ROUND AFTER ROUND OF ARCTIC AIR MOVED INTO NEW ENGLAND FOR
THE NEXT FEW WEEKS. ALTHOUGH THERE WERE A FEW LIGHT SNOWFALLS, THE
BIGGEST BY FAR WAS ON MARCH 14 WHEN A NOR`EASTER BROUGHT 15.6 INCHES
OF SNOW AND BLIZZARD CONDITIONS. THE EXTREME COLD GRADUALLY ABATED
BY THE END OF MARCH, BUT ANOTHER SNOWSTORM CAME ON MARCH 31 AND
APRIL 1 WHEN MORE THAN A FOOT OF NEW SNOW FELL. AFTER THE SNOW THE
TEMPERATURE WARMED QUICKLY INTO THE 50S THE VERY NEXT DAY. THE APRIL
SUN ACTED QUICKLY ON THE REMAINING WINTER SNOW PACK. THE LAST TRACE
OF THE WINTER SNOW MELTED ON APRIL 10 WHEN THE TEMPERATURE SOARED
INTO THE 80S FOR TWO STRAIGHT DAYS. SPRING BECAME A BATTLE BETWEEN
BUILDING WARMTH IN THE INTERIOR OF NORTH AMERICA AND PERIODIC BOUTS
OF COOLER, MOIST AIR MOVING IN FROM THE COLD GULF OF MAINE. SOME OF
THE NOTABLE WARM SPOTS IN THE SPRING INCLUDED EASTER SUNDAY, APRIL
16, WHEN THE TEMPERATURE HIT 87 DEGREES. 80 DEGREES WAS OBSERVED 5
TIMES IN APRIL, THE MOST ON RECORD. THE COOLER, WET WEATHER
PERSISTED FOR MOST OF MAY WITH THE LAST FREEZE OF THE SEASON
OCCURRING ON MAY 9. THE WARMTH DID BREAK THROUGH IN MID MAY WHEN
CONCORD HIT 90 DEGREES ON THE 17TH AND 18TH.

AFTER SOME MORE COOL AND WET WEATHER, INCLUDING NEARLY 2 INCHES OF
RAIN ON JUNE 6, A WARM, HUMID AIR MASS MOVED INTO NEW ENGLAND
BRINGING CONCORD A TASTE OF SUMMER. THE TEMPERATURE SOARED WELL
ABOVE 90 DEGREES FOR THREE STRAIGHT DAYS FROM JUNE 11 THRU 13.
CONCORD SAW ANOTHER 8 STRAIGHT DAYS ABOVE 80 DEGREES FROM JUNE 18
THRU 25 AS A WARM AND DRY WEATHER PATTERN SET IN. THE MOST SUSTAINED
WARMTH OF THE SUMMER CAME IN JULY, WITH ANOTHER 3 DAYS OF 90 DEGREES
FROM JULY 20 THRU 22. A COLD FRONT CAME THROUGH ON JULY 23 AND
BROUGHT MUCH COOLER WEATHER. THE HIGH TEMPERATURE ON JULY 24 WAS
ONLY 61 DEGREES, THE COOLEST JULY DAY IN 25 YEARS. WITH A PERSISTENT
DRY AIR MASS IN PLACE FOR THE LAST HALF OF SUMMER, CONCORD
FREQUENTLY SAW DAYTIME TEMPERATURES WARM TO NEAR NORMAL WHILE
NIGHTTIME TEMPERATURES FELL BELOW NORMAL. BY THE END OF AUGUST MORE
COOL, FALL-LIKE TEMPERATURES ARRIVED. THIS COOL PERIOD PEAKED ON
SEPTEMBER 2 WHEN THE TEMPERATURE FELL ALL THE WAY TO 35 DEGREES!

AFTER SOME BENEFICIAL RAIN IN EARLY SEPTEMBER THIS WEATHER PATTERN
BEGAN TO SHIFT AGAIN. A RIDGE OF HIGH PRESSURE IN THE WESTERN
ATLANTIC SENT WARM, HUMID CONDITIONS NORTHWARD INTO NEW ENGLAND.
MUCH OF SEPTEMBER FELT MORE LIKE SUMMER WITH 7 STRAIGHT DAYS ABOVE
80 DEGREES FROM SEPTEMBER 11 THRU 17. NOT TO BE OUTDONE, CONCORD SAW
A VERY LATE SEASON HEAT WAVE AT THE END OF SEPTEMBER WHEN THE
TEMPERATURE TOPPED 90 DEGREES FOR 4 STRAIGHT DAYS FROM SEPTEMBER 24
THRU 27. THIS WAS THE LATEST HEAT WAVE ON RECORD AT CONCORD.
ALTHOUGH THE SUMMER-LIKE HEAT DID NOT RETURN, THE WARM WEATHER
PERSISTED RIGHT THROUGH OCTOBER WITH ONLY A FEW COLD FRONTS BRINGING
BRIEF BREAKS FROM THE WARMTH. THE FIRST FREEZE OF THE SEASON CAME ON
OCTOBER 13, ABOUT TWO WEEKS LATER THAN NORMAL. SOME RUMBLINGS OF A
PATTERN CHANGE COMING WERE FINALLY NOTED IN LATE OCTOBER WHEN TWO
STRONG STORM SYSTEMS BRINGING HEAVY RAINFALL. THE FIRST BROUGHT MORE
THAN 4.5 INCHES OF RAIN ON OCTOBER 24 THRU 26. THE NEXT ONE BROUGHT
WIND ALONG WITH THE RAIN ON OCTOBER 29 AND 30. ANOTHER 2 INCHES OF
RAIN FELL WITH WINDS GUSTING TO 50 MPH CAUSING TREE DAMAGE THROUGH
THE REGION ALONG WITH SOME POWER OUTAGES LASTING THROUGH HALLOWEEN.

ALTHOUGH THE FALL WARMTH HUNG ON FOR A FEW MORE DAYS INTO EARLY
NOVEMBER, INCLUDING 71 DEGREES ON NOVEMBER 3, COLDER TEMPERATURES
WERE ON THE WAY. A COLD FRONT ON NOVEMBER 6 BROUGHT COLDER AIR INTO
THE AREA, WITH ANOTHER COLD FRONT BRINGING EVEN COLDER TEMPERATURES
JUST A FEW DAYS LATER. THE FIRST SNOW OF THE SEASON CAME ON NOVEMBER
13 WHEN A LITTLE MORE THAN HALF AN INCH WAS MEASURED. A SERIES OF
COLD FRONTS KEPT TEMPERATURES COOL FOR A FEW MORE WEEKS. AFTER A
BRIEF BREAK FROM THE COOL WEATHER IN EARLY DECEMBER, INCLUDING TWO
DAYS IN THE 50S, A SNOWSTORM ON DECEMBER 9 BROUGHT MORE THAN 4
INCHES OF SNOW. ANOTHER 4 INCHES OF SNOW FOLLOWED BY FREEZING RAIN
CAME ON DECEMBER 12, WITH A SHIFT TO MUCH COLDER WEATHER FOLLOWING
THIS STORM. THE TEMPERATURE DID NOT RISE ABOVE FREEZING FOR THE NEXT
7 DAYS. ANOTHER 4 INCHES OF SNOW CAME ON DECEMBER 22 WITH FREEZING
RAIN THE NEXT DAY. THE LAST SNOWSTORM OF THE YEAR WAS ON CHRISTMAS
MORNING WHEN 5 INCHES OF SNOW FELL. EVEN COLDER AIR POURED IN BEHIND
THIS STORM WITH SUBFREEZING TEMPERATURES OBSERVED FOR THE REST OF
THE YEAR. THE LAST 5 DAYS OF THE YEAR DID NOT SEE THE TEMPERATURE
RISE ABOVE 20 DEGREES AND THE TEMPERATURE DROPPED BELOW ZERO EACH
NIGHT.

THE AVERAGE TEMPERATURE FOR THE YEAR WAS 48.2 DEGREES WHICH WAS 1.8
DEGREES ABOVE NORMAL. THE WARMEST YEAR ON RECORD WAS LAST YEAR WHEN
THE AVERAGE TEMPERATURE WAS 49.3 DEGREES IN 2016. THE COLDEST WAS
1918 WHEN IT WAS ONLY 41.1 DEGREES. THE FOLLOWING TABLE LISTS THE
AVERAGE TEMPERATURES FOR EACH MONTH OF 2017 INCLUDING DEPARTURES
FROM NORMAL.

AVERAGE TEMPERATURES BY MONTH IN 2017
MONTH      MAXIMUM       MINIMUM      AVERAGE      NOTES
JANUARY    37.4 (+6.6)   19.6 (+9.2)  28.5 (+7.9)
FEBRUARY   41.2 (+6.3)   19.0 (+5.2)  30.1 (+5.8)  5TH WARMEST
MARCH      38.6 (-5.2)   19.7 (-2.8)  29.1 (-4.0)
APRIL      61.2 (+3.8)   37.6 (+4.9)  49.4 (+4.3)  4TH WARMEST
MAY        66.0 (-2.9)   44.1 (+1.5)  55.0 (-0.8)
JUNE       78.5 (+1.1)   53.7 (+1.2)  66.1 (+1.2)
JULY       82.0 (-0.3)   58.0 (+0.3)  70.0  (0.0)
AUGUST     80.6 (-0.3)   53.9 (-2.2)  67.3 (-1.2)
SEPTEMBER  77.2 (+4.6)   53.6 (+6.2)  65.4 (+5.4)  3RD WARMEST
OCTOBER    69.9 (+9.4)   44.0 (+8.2)  56.9 (+8.7)  2ND WARMEST
NOVEMBER   48.0 (-0.4)   28.1 (-0.1)  38.0 (-0.3)
DECEMBER   30.6 (-5.7)   13.7 (-3.5)  22.2 (-4.6)  COLDEST SINCE 1989
ANNUAL     59.3 (+1.3)   37.1 (+2.3)  48.2 (+1.8)

CONCORD SAW 147 DAYS OF 70 DEGREE WARMTH, THE SECOND MOST ON RECORD.
THE FOLLOWING TABLE LISTS THE NUMBER OF DAYS WITH A HIGH TEMPERATURE
OF 70 DEGREES OR WARMER.

HIGH TEMPERATURE OF 70 DEGREES OR WARMER IN A YEAR (SINCE 1869)...
RANK  DAYS  YEAR
1     158   1870
2     147   2017 <===
      147   1957
4     146   2016
      146   1963
6     144   2015
      144   2001
8     143   1991
      143   1947

A TOTAL OF 44.19 INCHES OF PRECIPITATION FELL WHICH WAS 3.62 INCHES
ABOVE NORMAL. THE HEAVIEST PRECIPITATION OF THE YEAR FELL IN THE
LAST WEEK OF OCTOBER WHEN TWO STORM SYSTEMS BROUGHT MORE THAN 7
INCHES OF RAINFALL. THE WETTEST YEAR ON RECORD WAS IN 2008 WHEN
57.99 INCHES OF PRECIPITATION WAS RECORDED. THE DRIEST WAS IN 1965
WHEN ONLY 24.17 INCHES FELL. THE FOLLOWING TABLE LISTS THE
PRECIPITATION AND SNOWFALL AMOUNTS FOR EACH MONTH OF 2017 INCLUDING
DEPARTURES FROM NORMAL.

MONTHLY PRECIPITATION AND SNOWFALL TOTALS FOR 2017
MONTH      PRECIPITATION   SNOWFALL      NOTES
JANUARY    2.24  (-0.46)   8.9   (-9.2)
FEBRUARY   2.71  (+0.09)   24.2 (+12.3)
MARCH      3.98  (+0.71)   22.4 (+11.3)
APRIL      4.23  (+0.82)   6.9   (+4.1)
MAY        5.91  (+2.25)   0.0
JUNE       5.15  (+1.46)   0.0
JULY       1.21  (-2.53)   0.0
AUGUST     3.09  (-0.09)   0.0
SEPTEMBER  3.06  (-0.32)   0.0
OCTOBER    7.91  (+3.87)   0.0           5TH WETTEST
NOVEMBER   1.35  (-2.37)   0.6   (-2.0)
DECEMBER   3.07  (-0.13)   20.1  (+5.6)
ANNUAL     44.19 (+3.58)   83.1 (+21.7)

THERE WERE 10 DAYS IN 2017 THAT RECORDED AT LEAST 1.00 INCH OF
PRECIPITATION. THIS IS 0.7 DAYS ABOVE NORMAL AND THE MOST SINCE
2014. THE FOLLOWING TABLE LISTS THE DAYS WHICH RECEIVED AT LEAST
1.00 INCH OF PRECIPITATION.

DAYS WITH AT LEAST 1.00 INCH OF PRECIPITATION IN 2017
DAY           PRECIPITATION
MARCH 14      1.56
MAY 26        1.19
JUNE 6        1.98
AUGUST 18     1.69
SEPTEMBER 3   1.26
SEPTEMBER 6   1.06
OCTOBER 25    2.65
OCTOBER 26    1.05
OCTOBER 29    1.21
OCTOBER 30    1.21

SNOWFALL STATISTICS ARE NORMALLY LISTED BY SEASON RATHER THAN BY
CALENDAR YEAR. HOWEVER, 2017 SAW 83.1 INCHES OF SNOWFALL WHICH WAS
21.7 INCHES ABOVE NORMAL AND THE MOST SINCE 2013. THE HEAVIEST
SNOWSTORM WAS ON MARCH 14 WHEN 15.6 INCHES OF SNOW WAS MEASURED.
THERE WERE 19 DAYS WITH AT LEAST 1.0 INCH OF SNOWFALL, THE MOST
SINCE 2008. AT LEAST 6.0 INCHES OF SNOWFALL WAS OBSERVED ON 3 DAYS.
THE FOLLOWING TABLE LISTS THE DAYS WHICH RECEIVED 6 INCHES OR MORE
OF SNOWFALL IN 2017.

DAYS WITH AT LEAST 6 INCHES OF SNOWFALL IN 2017
DAY           SNOWFALL
FEBRUARY 9    6.3
MARCH 14      15.6
APRIL 1       6.9

SNOW DEPTH REACHED ITS PEAK IN MID FEBRUARY DURING AN EXCEPTIONAL
PERIOD OF CONSISTENTLY SNOWY WEATHER. THE HIGHEST SNOW DEPTH WAS 24
INCHES ON FEBRUARY 13 AND 16. EXTREME LATE FEBRUARY WARMTH DROPPED
THIS SNOW DEPTH SIGNIFICANTLY, BUT A BLIZZARD IN MID MARCH FOLLOWED
BY MORE HEAVY SNOW AROUND APRIL 1 KEPT THE WINTER SNOW PACK ON THE
GROUND WELL INTO APRIL. THE LAST OF THE WINTER SNOW PACK MELTED ON
APRIL 10. THE FIRST SIGNIFICANT SNOWFALL IN DECEMBER WAS FOLLOWED BY
COLD AND MORE SNOW WHICH KEPT SNOW ON THE GROUND THROUGH THE END OF
THE YEAR. THERE WERE A TOTAL OF 122 DAYS WITH AT LEAST 1 INCH OF
SNOW ON THE GROUND, 42 DAYS MORE THAN NORMAL. THERE WERE 107 DAYS
WITH AT LEAST 6 INCHES OF SNOW ON THE GROUND, 64 DAYS MORE THAN
NORMAL AND THE 3RD MOST ON RECORD. THERE WERE 32 DAYS WITH AT LEAST
12 INCHES OF SNOW ON THE GROUND, 12 DAYS MORE THAN NORMAL. THE
FOLLOWING TABLE LISTS THE MOST DAYS WITH AT LEAST 6 INCHES OF SNOW
ON THE GROUND.

DAYS WITH 6 INCHES OF SNOW ON THE GROUND (SINCE 1869)...
RANK  DAYS  YEAR
1     121   1971
2     111   2008
3     107   2017 <===
4     105   2003
5     101   2014
6      93   2005
       93   1969
       93   1960
9      89   1963
10     88   2001

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN 2017...
FEB 23  65   - WARMEST HIGH TEMPERATURE      63 IN 1875
FEB 24  69   - WARMEST HIGH TEMPERATURE      62 IN 1930 AND 1872
FEB 25  68   - WARMEST HIGH TEMPERATURE      63 IN 2016
MAR 14  15.6 - MOST SNOWFALL                 6.6 IN 1984
APR 1   6.9  - MOST SNOWFALL                 5.7 IN 1993
APR 11  87   - WARMEST HIGH TEMPERATURE      84 IN 1945
MAY 17  93   - WARMEST HIGH TEMPERATURE      93 IN 1977 /TIED/
MAY 18  95   - WARMEST HIGH TEMPERATURE      90 IN 1906 AND 1889
JUN 12  97   - WARMEST HIGH TEMPERATURE      94 IN 1973
SEP 24  91   - WARMEST HIGH TEMPERATURE      90 IN 2010
SEP 25  90   - WARMEST HIGH TEMPERATURE      89 IN 1970
SEP 26  90   - WARMEST HIGH TEMPERATURE      90 IN 2007 /TIED/
SEP 27  90   - WARMEST HIGH TEMPERATURE      88 IN 1933
OCT 25  2.65 - MOST PRECIPITATION            2.07 IN 2005

$$

KIMBLE


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