Climatological Report (Monthly)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
528 AM EST MON DEC 4 2017

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 TO 2017 /FOR TEMPERATURES/
CLIMATE RECORD PERIOD 1871 TO 2017 /FOR PRECIPITATION/
CLIMATE RECORD PERIOD 1882 TO 2017 /FOR SNOWFALL/

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              74   11/01/2003
                        11/04/1987
                        11/01/1974
 LOW                3   11/24/1989
HIGHEST            70   11/03        65       5       63  11/18
LOWEST             17   11/28        16       1       23  11/29
                        11/11
AVG. MAXIMUM     48.2              48.0     0.2     50.6
AVG. MINIMUM     28.5              30.9    -2.4     32.3
MEAN             38.4              39.4    -1.0     41.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.8    -0.8        0
DAYS MIN <= 32     23              17.7     5.3       16
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        13.50   1983
 MINIMUM         0.56   1939
TOTALS           2.10              4.93   -2.83     4.06
DAILY AVG.       0.07              0.16   -0.09     0.14
DAYS >= .01         8              11.2    -3.2       11
DAYS >= .10         5               7.4    -2.4        7
DAYS >= .50         1               3.1    -2.1        3
DAYS >= 1.00        0               1.3    -1.3        2
GREATEST
 24 HR. TOTAL    0.55   11/16

SNOWFALL (INCHES)
RECORDS
 TOTAL           24.3   1921
TOTALS            0.1               1.9    -1.8      0.5
SINCE 7/1         0.1               1.9    -1.8      0.5
SNOWDEPTH AVG.      0
DAYS >= TRACE       2               1.5     0.5
DAYS >= 1.0         0               0.7    -0.7
GREATEST
 SNOW DEPTH         T   11/14
 24 HR TOTAL      0.1   11/13

DEGREE_DAYS
HEATING TOTAL     793               767      26      696
 SINCE 7/1       1165              1491    -326     1252
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        433               359      74      553
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.8
HIGHEST WIND SPEED/DIRECTION    31/270    DATE  11/10
HIGHEST GUST SPEED/DIRECTION    43/280    DATE  11/10

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 1
RAIN                      6     LIGHT RAIN                12
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     FOG                       10
FOG W/VIS <= 1/4 MILE     0     HAZE                       0

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

&&

AFTER ITS WARMEST OCTOBER ON RECORD, PORTLAND SAW A SHIFT IN THE
WEATHER PATTERN IN THE MONTH OF NOVEMBER. THE FIRST WEEK OF THE
MONTH REMAINED UNSEASONABLY WARM. THE HIGH TEMPERATURE OF 70 DEGREES
ON NOVEMBER 3 WAS THE WARMEST TEMPERATURE IN THE MONTH. THINGS BEGAN
TO CHANGE WHEN A COLD FRONT ON THE 6TH BROUGHT COOLER AIR INTO THE
AREA. ALTHOUGH TEMPERATURES DROPPED TO A FEW DEGREES BELOW NORMAL,
IT WAS JUST A TASTE OF WHAT WAS TO COME. ANOTHER, STRONGER COLD
FRONT BROUGHT MUCH COLDER AIR STRAIGHT OUT OF THE ARCTIC A FEW DAYS
LATER, WITH THE TEMPERATURE DROPPING TO 17 DEGREES ON THE 11TH.
ALTHOUGH THE BRUTAL COLD ONLY LASTED A FEW DAYS, A SERIES OF COLD
FRONTS KEPT TEMPERATURES BELOW NORMAL FOR THE REST OF THE MONTH WITH
ONLY A FEW BRIEF EXCEPTIONS. THE FIRST MEASURABLE SNOW OF THE SEASON
WAS OBSERVED ON THE 13TH WHEN 0.1 INCHES FELL.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 38.4 DEGREES WHICH WAS 1.0
DEGREES BELOW NORMAL AND THE COLDEST NOVEMBER SINCE 2013. THE COLD
WAS MOST NOTICEABLE IN LOW TEMPERATURES WHICH AVERAGED 28.5 DEGREES,
THE COLDEST SINCE 1996. THE COLDEST NOVEMBER ON RECORD WAS IN 1967
WHEN THE AVERAGE TEMPERATURE WAS 34.7 DEGREES. THE WARMEST WAS 44.7
DEGREES IN 2011.

A TOTAL OF 2.10 INCHES OF PRECIPITATION FELL WHICH WAS 2.83 INCHES
BELOW NORMAL AND THE DRIEST NOVEMBER SINCE 2012. THE HEAVIEST
PRECIPITATION WAS ON THE 16TH WHEN 0.55 INCHES WAS MEASURED. THE
DRIEST NOVEMBER ON RECORD WAS IN 1939 WHEN ONLY 0.56 INCHES FELL.
THE WETTEST WAS IN 1983 WHEN 13.50 INCHES FELL.

THERE WAS 0.1 INCHES OF SNOWFALL WHICH WAS 1.8 INCHES BELOW NORMAL.
SNOWFALL IN NOVEMBER IS OFTEN INCONSISTENT. OF THE 137 YEARS OF
SNOWFALL RECORDS AT PORTLAND, THERE HAVE BEEN 6 YEARS IN WHICH NO
SNOW FELL IN NOVEMBER, MOST RECENTLY IN 2006. THERE HAVE BEEN AN
ADDITIONAL 35 YEARS IN WHICH ONLY A TRACE OF SNOW WAS OBSERVED, MOST
RECENTLY IN 2015. IN ROUGHLY 30 PERCENT OF YEARS MEASURABLE SNOWFALL
IS NOT SEEN IN NOVEMBER. THE SNOWIEST NOVEMBER WAS IN 1921 WHEN 24.3
INCHES FELL.

NO DAILY RECORDS WERE SET OR TIED IN NOVEMBER 2017.

$$

KIMBLE


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