Climatological Report (Monthly)
Issued by NWS Portland, ME

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CXUS51 KGYX 061029
CLMCON

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
628 AM EDT SAT OCT 6 2018

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018...

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              98   09/02/1953
 LOW               20   09/30/1941
HIGHEST            94   09/03        88       6       91  09/24
LOWEST             39   09/30        32       7       35  09/02
AVG. MAXIMUM     74.8              72.6     2.2     77.2
AVG. MINIMUM     54.4              47.4     7.0     53.6
MEAN             64.6              60.0     4.6     65.4
DAYS MAX >= 90      3               0.6     2.4        4
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               1.5    -1.5        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.97   1888
 MINIMUM         0.21   1914
TOTALS           4.71              3.38    1.33     3.06
DAILY AVG.       0.16              0.11    0.05     0.10
DAYS >= .01         9               9.3    -0.3        7
DAYS >= .10         7               6.1     0.9        4
DAYS >= .50         4               2.2     1.8        2
DAYS >= 1.00        2               0.8     1.2        2
GREATEST
 24 HR. TOTAL    1.23   09/10

SNOWFALL (INCHES)
RECORDS
 TOTAL              T   1992
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0
DAYS >= TRACE       0               0.0     0.0        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0
 24 HR TOTAL      0.0

DEGREE_DAYS
HEATING TOTAL     113               187     -74       88
 SINCE 7/1        117               235    -118      141
COOLING TOTAL     110                37      73      105
 SINCE 1/1        728               450     278      550
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              3.6
HIGHEST WIND SPEED/DIRECTION    28/320    DATE  09/22
HIGHEST GUST SPEED/DIRECTION    37/320    DATE  09/22

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     77

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

&&

SEPTEMBER, MUCH LIKE THE MONTH BEFORE IT, FEATURED A FREQUENT RIDGE
OF HIGH PRESSURE OVER THE EAST COAST OR WESTERN ATLANTIC WHICH
BROUGHT WARM, HUMID AIR AROUND IT AND INTO NEW ENGLAND WITH ONLY
BRIEF PERIODS OF COOLER WEATHER. THE WARMEST PERIOD WAS AT THE
BEGINNING OF THE MONTH WHEN CONCORD SURPASSED 90 DEGREES ON 3 OUT OF
4 DAYS FROM THE 3RD TO THE 6TH ALONG WITH HIGH HUMIDITY. A COLD
FRONT BROUGHT SOME COOLER WEATHER FROM THE 8TH TO THE 10TH, BUT THE
WARM WEATHER WOULD RETURN AGAIN. AFTER A FEW DAYS OF RAIN, THE WARM
WEATHER BEGAN CREEPING BACK INTO THE AREA WITH ANOTHER 4 DAYS ABOVE
80 DEGREES DURING THE MIDDLE OF SEPTEMBER. AFTER HURRICANE FLORENCE
MADE LANDFALL IN NORTH CAROLINA ITS REMNANTS EVENTUALLY TURNED
NORTHWARD AND TRACKED THROUGH NEW ENGLAND. ALTHOUGH IT WAS MOVING
MUCH MORE QUICKLY WHEN IT ARRIVED, IT STILL BROUGHT NEARLY AN INCH
OF RAIN ON SEPTEMBER 18. A COLD FRONT BROUGHT SOME COOLER WEATHER
FOR THE NEXT WEEK, BUT WARM WEATHER BEGAN BUILDING AGAIN BY THE END
OF THE MONTH.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 64.6 DEGREES WHICH WAS 0.6
DEGREES ABOVE NORMAL AND TIED FOR THE 5TH WARMEST ON RECORD. THE
WARMEST SEPTEMBER WAS IN 1961 WHEN THE AVERAGE TEMPERATURE WAS 67.1
DEGREES. THE COOLEST WAS IN 1893 WHEN IT WAS 53.6 DEGREES. THE
FOLLOWING TABLE LISTS THE WARMEST SEPTEMBERS ON RECORD AT CONCORD.

WARMEST AVERAGE TEMPERATURE IN SEPTEMBER (SINCE 1868)...
RANK  TEMP  YEAR
1     67.1  1961
2     65.5  1881
3     65.4  2017
4     65.2  2015
5     64.6  2018 <===
      64.6  1877
7     64.4  2016
8     64.3  1872
9     63.9  2011
10    63.7  1880

A TOTAL OF 4.71 INCHES OF RAIN FELL WHICH WAS 1.33 INCHES ABOVE
NORMAL. THE HEAVIEST RAIN CAME ON SEPTEMBER 10 AND 11 WHEN 1.91
INCHES WAS RECORDED. THE WETTEST SEPTEMBER ON RECORD WAS IN 1888
WHEN 10.97 INCHES FELL. THE DRIEST WAS IN 1914 WHEN ONLY 0.21 INCHES
WAS RECORDED.

THE FOLLOWING RECORDS WERE SET OR TIED IN SEPTEMBER 2018...
DATE  RECORD                                PREVIOUS
3     94   - WARMEST HIGH TEMPERATURE       93 IN 1973
5     91   - WARMEST HIGH TEMPERATURE       91 IN 1961 AND OTHERS (TIED)
6     92   - WARMEST HIGH TEMPERATURE       91 IN 1998

$$

KIMBLE


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