Climatological Report (Seasonal)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
331 PM EST FRI MAR 6 2020

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE WINTER SEASON, FROM
12/1/2019 TO 2/29/2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 TO 2019 /FOR TEMPERATURES/
CLIMATE RECORD PERIOD 1871 TO 2019 /FOR PRECIPITATION/
CLIMATE RECORD PERIOD 1882 TO 2019 /FOR SNOWFALL/


WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              71   12/06/2001
                        12/07/1998
 LOW              -39   02/16/1943
HIGHEST            63   01/11        59       4       62  02/05
LOWEST             -4   01/21       -10       6       -2  02/02
AVG. MAXIMUM     38.5              34.3     4.2     35.1
AVG. MINIMUM     21.9              16.8     5.1     17.6
MEAN             30.2              25.6     4.6     26.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     21              37.0   -16.0       36
DAYS MIN <= 32     80              82.9    -2.9       86
DAYS MIN <= 0       3               7.6    -4.6        1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        20.49   1935
 MINIMUM         4.12   1872
TOTALS          15.55             10.65    4.90    13.13
DAILY AVG.       0.17              0.12    0.05     0.15
DAYS >= .01        34              32.3     1.7       29
DAYS >= .10        24              19.5     4.5       20
DAYS >= .50        10               7.0     3.0       11
DAYS >= 1.00        4               2.7     1.3        5
GREATEST
 24 HR. TOTAL    3.40   12/14

SNOWFALL (INCHES)
RECORDS
 TOTAL          107.6   1971
TOTALS           50.2              44.5     5.7     35.2
SINCE 7/1        50.5              46.4     4.1     51.1
SNOWDEPTH AVG.      4
DAYS >= TRACE      31              20.1    10.9       26
DAYS >= 1.0        13              11.5     1.5       12
GREATEST
 SNOW DEPTH        11   12/31
 24 HR TOTAL      9.8   12/30

DEGREE_DAYS
HEATING TOTAL    3145              3550    -405     3457
 SINCE 7/1       4580              5078    -498     4990
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.9
HIGHEST WIND SPEED/DIRECTION    38/090    DATE  02/27
HIGHEST GUST SPEED/DIRECTION    47/090    DATE  02/27

SKY COVER
AVERAGE SKY COVER           0.60

AVERAGE RH (PERCENT)     63


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

&&

AFTER A VERY COLD NOVEMBER, THE METEOROLOGICAL WINTER BEGAN WITH A
LONG DURATION SNOWSTORM. SNOW BEGAN ON THE EVENING OF DECEMBER 1 AND
DIDN`T LET UP UNTIL THE 3RD. A TOTAL OF 8.5 INCHES FELL AND THE COLD
WEATHER CONTINUED FOR THE FIRST WEEK OF DECEMBER. THEN THE PATTERN
CHANGED AND THE TEMPERATURE TOPPED 50 DEGREES ON DECEMBER 8 AND 9
WITH RAIN FALLING. THIS WAS THE START OF A STRETCH OF WARM AND RAINY
WEATHER. THE HEAVIEST RAIN FELL ON THE 13TH AND 14TH WHEN 3.78
INCHES FELL, WASHING THE LAST OF THE EARLY SEASON SNOW DEPTH AWAY.
SOME LIGHT SNOW FELL ON THE 17TH AND 18TH, BUT WITH MORE WARM
WEATHER THERE WAS ONLY A TRACE LEFT ON THE GROUND FOR CHRISTMAS
MORNING. ANOTHER LONG DURATION WINTER STORM BROUGHT MORE THAN 12
INCHES OF SNOWFALL JUST BEFORE NEW YEARS. THE WINTER WAS BEGINNING
TO SETTLE INTO A PATTERN OF MOSTLY MILD WEATHER WITH BRIEF PERIODS
OF ARCTIC COLD. THE NEXT STRETCH OF WARM WEATHER PEAKED AT 63
DEGREES ON JANUARY 11. A FEW SNOWSTORMS AFFECTED THE CITY IN THE
MIDDLE OF JANUARY, WITH THE BIGGEST DROPPING 6 INCHES ON THE 16TH.
SOME COLDER WEATHER MOVED IN BEHIND THESE STORMS WITH THE
TEMPERATURE BOTTOMING OUT AT 4 BELOW ZERO ON THE 21ST. THIS COLD
DIDN`T LAST LONG, THOUGH, AS THE TEMPERATURE WARMED BACK INTO THE
40S FOR MUCH OF THE NEXT WEEK. MORE THAN AN INCH OF RAIN FELL ON
JANUARY 25TH AND 26TH. ANOTHER WINTER STORM BROUGHT MORE THAN 5
INCHES OF SNOW AND SLEET ALONG WITH SOME FREEZING RAIN ON FEBRUARY 6
AND 7. ARCTIC COLD ARRIVED AGAIN BEHIND THIS STORM WITH THE
TEMPERATURE DROPPING TO ZERO ON FEBRUARY 9. AFTER A BIT MORE WARM
WEATHER, THE NEXT COLD SNAP ARRIVED FOR VALENTINE`S DAY, FALLING TO
1 BELOW ZERO BY THE MORNING OF FEBRUARY 15. IT WAS BACK INTO THE 40S
THE VERY NEXT DAY THOUGH. AFTER SOME LIGHT SNOW ON FEBRUARY 18TH
THERE WAS ONE MORE COLD SNAP BEFORE THE TEMPERATURE WARMED BACK UP
AGAIN FOR THE LAST WEEK OF FEBRUARY. MORE THAN AN INCH OF RAIN FELL
ON FEBRUARY 27 AND THE RAIN ALONG WITH WARM TEMPERATURES LEFT ONLY 1
INCH OF SNOW ON THE GROUND BY THE END OF FEBRUARY.

THE AVERAGE TEMPERATURE FOR THE WINTER WAS 30.2 DEGREES WHICH WAS
4.6 DEGREES ABOVE NORMAL AND TIED FOR THE 3RD WARMEST WINTER ON
RECORD. THE WARMEST WAS IN 2001-02 WHEN THE AVERAGE TEMPERATURE WAS
31.3 DEGREES. THE COLDEST WAS 17.9 DEGREES IN 1970-71. THE FOLLOWING
TABLE LISTS THE WARMEST WINTERS AT PORTLAND.

WARMEST AVERAGE TEMPERATURE IN WINTER AT PORTLAND (SINCE 1940)...
RANK  TEMP  SEASON
1     31.3  2001-02
2     31.2  2015-16
3     30.2  2019-20  <===
      30.2  2011-12
5     29.3  1997-98
6     29.0  1990-91
7     28.9  2016-17
      28.9  1996-97
9     28.7  1952-53
10    28.5  2012-13

A TOTAL OF 15.55 INCHES OF PRECIPITATION FELL WHICH WAS 4.90 INCHES
ABOVE NORMAL AND THE WETTEST WINTER SINCE 2012-13. THE HEAVIEST
PRECIPITATION WAS ON DECEMBER 13 AND 14 WHEN 3.78 INCHES OF
PRECIPITATION FELL ALMOST ENTIRELY IN THE FORM OF RAIN. THE WETTEST
WINTER WAS IN 1934-35 WHEN 20.49 INCHES FELL. THE DRIEST HAD ONLY
4.12 INCHES IN 1871-72.

A TOTAL OF 50.2 INCHES OF SNOW FELL WHICH WAS 4.1 INCHES ABOVE
NORMAL. THE HEAVIEST SNOW FELL AT THE END OF DECEMBER WHEN 12.9
INCHES WAS MEASURED FROM DEC 29 TO 31. THE SNOWIEST WINTER WAS IN
1970-71 WHEN 107.6 INCHES FELL. THE LEAST SNOWY WAS IN 1936-37 WHEN
ONLY 9.5 INCHES WAS MEASURED.

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN WINTER 2019-20...
DATE    RECORD                               PREVIOUS
DEC 9   45   - WARMEST AVERAGE TEMPERATURE   43 IN 1950
DEC 10  58   - WARMEST HIGH TEMPERATURE      58 IN 2008 (TIED)
DEC 10  41   - WARMEST LOW TEMPERATURE       39 IN 1969, 1952
DEC 10  50   - WARMEST AVERAGE TEMPERATURE   47 IN 2008
DEC 14  46   - WARMEST AVERAGE TEMPERATURE   46 IN 2006 (TIED)
DEC 14  3.40 - GREATEST PRECIPITATION        1.74 IN 1917
JAN 11  63   - WARMEST HIGH TEMPERATURE      54 IN 2017, 1983
JAN 11  51   - WARMEST AVERAGE TEMPERATURE   46 IN 1983
JAN 12  52   - WARMEST HIGH TEMPERATURE      51 IN 2014, 1980
JAN 25  36   - WARMEST LOW TEMPERATURE       36 IN 2010 (TIED)

$$

KIMBLE



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