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Climatological Report (Annual)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
000
CXUS51 KGYX 061800
CLACON
CONCORD CLIMATE DATA FOR THE YEAR 2009
NATIONAL WEATHER SERVICE GRAY ME
100 PM EST WED JAN 6 2010
THE YEAR 2009 IN CONCORD NEW HAMPSHIRE WILL GO INTO THE RECORD
BOOKS AS ONE OF THE WETTEST ON RECORD. HERE ARE SOME OF THE
CLIMATOLOGICAL STATISTICS AND A DISCUSSION OF THE WEATHER
HIGHLIGHTS FOR THE PAST YEAR.
TEMPERATURE DATA YEAR 2009 NORMAL DEPARTURE
AVG. MONTHLY 45.3 45.9 MINUS 0.6
AVG. MAXIMUM 56.5 57.7 MINUS 1.2
AVG. MINIMUM 34.0 34.1 MINUS 0.1
NUMBER OF DAYS: YEAR 2009 NORMAL
MAXIMUM 90 OR ABOVE 8 11.4 MINUS 3.4
MAXIMUM 32 OR BELOW 55 49.0 PLUS 6.0
MINIMUM 32 OR BELOW 166 172.0 MINUS 6.0
MINIMUM 0 OR BELOW 17 19.8 MINUS 2.8
HIGHEST TEMPERATURE... 93 ON AUGUST 18TH
LOWEST TEMPERATURE... -24 ON JANUARY 16TH
COLDEST HIGH... 12 ON JANUARY 1ST
WARMEST LOW.... 69 ON AUGUST 23RD
WARMEST DAY... AUGUST 19TH WITH AN AVERAGE OF 80 DEGREES
COLDEST DAY... JANUARY 16TH WITH AN AVERAGE OF -5 DEGREES
YEAR 2009 NORMAL DEPARTURE
HEATING DEGREE DAYS 7404 7478 MINUS 74
COOLING DEGREE DAYS 329 442 MINUS 113
HEATING AND COOLING DEGREE DAYS LISTED ARE FOR THE CALENDAR YEAR.
THE HEATING DEGREE DAY SEASON NORMALLY RUNS FROM JULY 1ST THROUGH
JUNE 30TH...WHILE THE COOLING DEGREE SEASON NORMALLY RUNS FROM
JANUARY 1ST THROUGH DECEMBER 31ST.
PRECIPITATION 47.21 37.60 PLUS 9.61
SNOWFALL 77.0 64.6 PLUS 12.5
GREATEST PRECIPITATION IN 24 HOURS... 2.14 INCHES ON JUNE 13-14TH
GREATEST SNOWFALL IN 24 HOURS... 11.5 INCHES ON MARCH 1ST-2ND
GREATEST SNOW DEPTH ON GROUND... NOT AVAILABLE
THE FOLLOWING DATA IS FOR A CALENDAR DAY /MIDNIGHT TO MIDNIGHT/...
NUMBER OF DAYS WITH PRECIPITATION OF NORMAL DEPARTURE
.01 INCH OR MORE 130 128.7 PLUS 1.3
.10 INCH OR MORE 80
.50 INCH OR MORE 33
1.00 INCH OR MORE 14 7.9 PLUS 6.1
NUMBER OF DAYS WITH SNOWFALL OF NORMAL
1 WHOLE INCH OR MORE 15 17.0 MINUS 2.0
3 WHOLE INCHES OR MORE 10
6 WHOLE INCHES OR MORE 5
NUMBER OF DAYS WITH THUNDERSTORMS... 22 19.9 PLUS 2.1
NUMBER OF DAYS WITH HEAVY FOG... 69 47.1 PLUS 21.9
(VISIBILITY 1/4 MILE OR LESS)
...CONCORD NEW HAMPSHIRE 2009 MONTHLY TEMPERATURE DATA...
(RANK: 1 = WARMEST, 141 = COLDEST)
DEPARTURE
MONTH AVG HIGH AVG LOW MEAN TEMP FROM NORMAL RANK
JAN 25.9 2.6 14.3 MINUS 5.8 124TH
FEB 35.7 13.1 24.4 PLUS 1.1 55TH (TIED)
MAR 44.0 21.9 33.0 MINUS 0.3 57TH (TIED)
APR 60.1 34.3 47.2 PLUS 2.6 16TH
MAY 68.2 43.1 55.7 MINUS 0.3 71ST
JUN 72.2 53.7 63.0 MINUS 1.9 103RD (TIED)
JUL 76.7 56.3 66.5 MINUS 3.5 133RD
AUG 81.3 57.0 69.2 PLUS 1.0 38TH
SEP 71.2 44.1 57.7 MINUS 1.7 115TH (TIED)
OCT 56.6 34.3 45.5 MINUS 2.3 127TH
NOV 53.0 30.4 41.7 PLUS 4.1 10TH (TIED)
DEC 33.6 16.7 25.2 MINUS 0.7 80TH (TIED)
YEAR 56.5 34.0 45.3 MINUS 0.6 96TH
...CONCORD NEW HAMPSHIRE 2009 MONTHLY PRECIPITATION DATA...
(RANK: 1 = WETTEST, 142 = DRIEST)
DEPARTURE
MONTH PRECIPITATION FROM NORMAL RANK
JAN 3.03 PLUS 0.06 62ND
FEB 1.72 MINUS 0.64 112TH
MAR 2.90 MINUS 0.14 74TH
APR 4.00 PLUS 0.93 32ND
MAY 3.96 PLUS 0.63 40TH
JUN 6.46 PLUS 3.36 10TH
JUL 7.55 PLUS 4.18 6TH
AUG 4.18 PLUS 0.97 37TH
SEP 0.92 MINUS 2.24 130TH
OCT 5.15 PLUS 1.69 16TH
NOV 3.32 MINUS 0.25 65TH
DEC 4.02 PLUS 1.06 35TH (TIED)
YEAR 47.21 PLUS 9.61 14TH
...CONCORD NEW HAMPSHIRE 2009 MONTHLY SNOWFALL DATA...
(RANK: 1 = SNOWIEST, 142 = LEAST SNOWIEST)
DEPARTURE
MONTH SNOWFALL FROM NORMAL RANK
JAN 33.1 PLUS 14.2 12TH
FEB 11.5 MINUS 1.4 98TH (TIED)
MAR 16.0 PLUS 4.5 37TH (TIED)
APR 0.0 MINUS 3.1 134TH (TIED)
MAY 0.0 MINUS TRACE 31ST (TIED)
JUN 0.0 NONE -----
JUL 0.0 NONE -----
AUG 0.0 NONE -----
SEP 0.0 NONE -----
OCT TRACE MINUS 0.1 15TH (TIED)
NOV 0.0 MINUS 4.7 139TH
DEC 16.4 PLUS 3.0 44TH
YEAR 70.7 PLUS 12.4 -----
NOTE...SNOWFALL FOR THE YEAR IS GIVEN FOR THE CALENDAR YEAR.
NORMALLY SNOWFALL TOTALS AND RANKINGS ARE GIVEN FOR THE SEASON
...FROM JULY 1ST THROUGH JUNE 30TH.
STRONGEST WIND GUST... 52 MPH ON NOVEMBER 28TH.
...DISCUSSION...
THE YEAR 2009 IN CONCORD NEW HAMPSHIRE ENDED UP MUCH WETTER
THAN NORMAL WITH THE 14TH WETTEST YEAR IN THE PAST 142 YEARS
OF PRECIPITATION RECORDS. IT WAS ALSO COOLER AND SNOWIER THAN
NORMAL.
THE 47.21 INCHES OF PRECIPITATION (COMBINED RAINFALL AND
MELTED SNOWFALL) WAS 9.61 INCHES ABOVE NORMAL AND WAS THE
14TH WETTEST YEAR ON RECORD. THE WETTEST YEAR WAS JUST
LAST YEAR WHEN CONCORD RECORDED 57.99 INCHES OF
PRECIPITATION.
INTERESTINGLY...2005 WAS THE SECOND WETTEST YEAR IN CONCORD
WITH 57.28 INCHES AND 2006 WAS THE THIRD WETTEST YEAR WITH
55.25 INCHES OF PRECIPITATION. THE DRIEST YEAR WAS IN 1965
WITH JUST 24.17 INCHES.
SUMMER 2009 WAS THE FOURTH WETTEST ON RECORD IN CONCORD
WITH A THREE MONTH (JUNE, JULY AND AUGUST) TOTAL OF 18.19
INCHES OF RAIN. THE WETTEST SUMMER WAS IN 1897 WITH 20.49
INCHES OF RAIN.
HERE IS A LIST OF THE WETTEST SUMMERS ON RECORD IN CONCORD...
RANK RAINFALL YEAR
1 20.49 INCHES 1897
2 20.08 INCHES 1887
3 19.33 INCHES 1872
4 18.19 INCHES 2009 <===
5 17.92 INCHES 1915
6 17.13 INCHES 1903
7 16.46 INCHES 2006
8 16.14 INCHES 2008
9 15.59 INCHES 1928
10 15.27 INCHES 1938
DRIEST 2.74 INCHES 1999
NORMAL 9.68 INCHES
ALL THREE SUMMER MONTHS HAD ABOVE NORMAL RAINFALL. JUNE HAD
6.46 INCHES OF RAIN WHICH WAS 3.36 INCHES ABOVE NORMAL AND
THE 10TH WETTEST JUNE ON RECORD. JULY HAD 7.55 INCHES WHICH
WAS 4.18 INCHES ABOVE NORMAL AND THE 6TH WETTEST JULY. THE
COMBINED RAINFALL OF 14.01 INCHES OF RAIN IN JUNE AND JULY
MADE THIS THE SECOND WETTEST JUNE AND JULY IN CONCORD. THE
WETTEST JUNE PLUS JULY PERIOD IS 16.91 INCHES IN 1897.
AUGUST FOLLOWED WITH 4.18 INCHES OF RAIN WHICH WAS NEARLY
AN INCH (0.97 INCHES) ABOVE NORMAL.
THERE WERE FIVE OTHER MONTHS WITH ABOVE NORMAL RAINFALL AND
JUST FOUR MONTHS...FEBRUARY, MARCH, SEPTEMBER AND NOVEMBER
...WITH BELOW NORMAL PRECIPITATION THIS PAST YEAR.
THE GREATEST 24 HOUR PRECIPITATION DURING THE YEAR WAS 2.14
INCHES ON JUNE 13-14TH.
THERE WAS EXACTLY 77 INCHES OF SNOW IN 2009. THIS WAS ABOUT
A FOOT (12.4 INCHES) ABOVE NORMAL.
THE SNOWIEST MONTH WAS JANUARY WITH 33.1 INCHES. THE NEXT
SNOWIEST MONTH WAS DECEMBER WITH 16.4 INCHES OF SNOW. THIS
WAS FOLLOWED BY MARCH WITH 16.0 INCHES AND FEBRUARY WITH 11.5
INCHES. THE REST OF THE YEAR RECORDED JUST A TRACE. NOVEMBER
REPORTED NO SNOW IN 2009...JUST THE FOURTH TIME THAT HAS
HAPPENED IN THE PAST 142 YEARS.
THE GREATEST 24 HOUR SNOWFALL WAS 11.5 INCHES ON MARCH 1ST-2ND.
THE AVERAGE HIGH TEMPERATURE FOR THE YEAR WAS 56.5 DEGREES
WHICH WAS 1.2 DEGREES BELOW NORMAL AND THE AVERAGE LOW FOR
THE YEAR WAS 34.0 DEGREES WHICH WAS JUST 0.1 DEGREES BELOW
NORMAL. OVERALL...THE AVERAGE TEMPERATURE FOR THE YEAR WAS
45.3 DEGREES WHICH WAS 0.6 DEGREES BELOW NORMAL AND RANKED AS
THE 96TH WARMEST IN THE PAST 141 YEARS.
THE WARMEST MONTH WAS AUGUST WITH AN AVERAGE TEMPERATURE OF
69.2 DEGREES WHILE JANUARY WAS THE COLDEST WITH AN AVERAGE
OF 14.3 DEGREES.
THE HIGHEST TEMPERATURE FOR THE YEAR WAS 93 DEGREES ON
APRIL 28TH AND ON AUGUST 18TH. THE 93 DEGREE READING IN APRIL
WAS THE THIRD WARMEST EVER RECORDED IN APRIL. THE WARMEST
TEMPERATURE IN APRIL WAS 95 DEGREES SET ON APRIL 19, 1976 AND
THE SECOND WARMEST WAS 94 DEGREES ON APRIL 17, 2002.
APRIL HAD ANOTHER 90 DEGREE DAY ON THE 25TH. PRIOR TO THESE
TWO 90 DEGREE DAYS IN APRIL, CONCORD HAD REACHED THE 90
DEGREE PLATEAU ONLY 10 OTHER TIMES IN APRIL IN THE PAST 141
YEARS.
HERE IS A LIST OF THE WARMEST APRIL TEMPERATURES IN CONCORD...
RANK TEMPERATURE DATE
1 95 DEGREES APRIL 19, 1976
2 94 DEGREES APRIL 17, 2002
3 93 DEGREES APRIL 28, 2009 <=====
4 92 DEGREES APRIL 28, 1990
92 DEGREES APRIL 27, 1990
92 DEGREES APRIL 18, 1976
92 DEGREES APRIL 20, 1941
92 DEGREES APRIL 8, 1871
9 91 DEGREES APRIL 27, 1962
10 90 DEGREES APRIL 25, 2009 <=====
90 DEGREES APRIL 19, 2004
90 DEGREES APRIL 17, 1976
CONCORD ALSO HIT 90 IN MAY WITH A HIGH OF 91 ON THE 21ST.
JUNE AND JULY...TWO WET AND COOL MONTHS...NEVER REACHED 90
...IN FACT CONCORD NEVER SAW AN 80 DEGREE READING IN JUNE.
THE WARMEST TEMPERATURE IN JUNE WAS JUST 78 DEGREES.
CONCORD HAD ITS ONLY HEAT WAVE (DEFINED AS THREE CONSECUTIVE
DAYS OF 90 OR WARMER) IN AUGUST WHEN THE TEMPERATURE REACHED
90 ON THE 15TH, 16TH AND 17TH THEN PEAKED AT 93 ON THE 18TH.
THE COLDEST READING FOR THE YEAR WAS A BONE CHILLING 24
DEGREES BELOW ZERO ON JANUARY 16TH. THIS WAS A RECORD LOW
FOR THE DATE AND WAS WAS ONE OF 13 DAYS WITH LOWS OF ZERO OR
COLDER IN JANUARY. FOR THE YEAR CONCORD HAD LOWS OF ZERO OR
COLDER 17 TIMES.
HERE IS A LIST OF DAILY TEMPERATURE RECORDS SET OR
TIED IN CONCORD IN 2009...
DATE RECORD PREVIOUS RECORD & YEAR
JAN 24 -24 - RECORD LOW TEMPERATURE -19 DEGREES IN 1984
APR 25 90 - RECORD HIGH TEMPERATURE 85 DEGREES IN 1942
APR 28 93 - RECORD HIGH TEMPERATURE 92 DEGREES IN 1990
JUL 14 47 - RECORD LOW TEMPERATURE 47 DEGREES IN 1940 (TIED)
DEC 3 65 - RECORD HIGH TEMPERATURE 60 DEGREES IN 1932
$$
SJC
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