Climatological Report (Seasonal)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
130 PM EDT THU JUN 8 2017

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE SEASON, FROM
3/1/2017 TO 5/31/2017...

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              94   05/31/1987
 LOW              -21   03/04/1950
HIGHEST            93   05/18        85       8       87  05/31
                                                          05/28
LOWEST              1   03/12         6      -5       13  03/03
AVG. MAXIMUM     51.3              53.0    -1.7     54.5
AVG. MINIMUM     34.2              34.6    -0.4     35.7
MEAN             42.8              43.8    -1.0     45.1
DAYS MAX >= 90      1               0.4     0.6        0
DAYS MAX <= 32     10               4.3     5.7        3
DAYS MIN <= 32     36              36.8    -0.8       36
DAYS MIN <= 0       0               0.4    -0.4        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        22.55   1983
 MINIMUM         4.23   1965
TOTALS          15.84             12.57    3.27     7.97
DAILY AVG.       0.17              0.14    0.03     0.09
DAYS >= .01        37              35.5     1.5       38
DAYS >= .10        24              21.6     2.4       17
DAYS >= .50        13               8.5     4.5        5
DAYS >= 1.00        6               2.8     3.2        0
GREATEST
 24 HR. TOTAL    2.77   05/25 TO 05/26

SNOWFALL (INCHES)
RECORDS
 TOTAL           61.5   1906
TOTALS           29.1              15.5    13.6     10.8
SINCE 7/1        95.3              61.9    33.4     51.8
SNOWDEPTH AVG.      1
DAYS >= TRACE      17               6.1    10.9       12
DAYS >= 1.0         4               3.7     0.3        3
GREATEST
 SNOW DEPTH        12   03/15
 24 HR TOTAL     16.4   03/14 TO 03/15

DEGREE_DAYS
HEATING TOTAL    2042              1960      82     1828
 SINCE 7/1       6520              7001    -481     6119
COOLING TOTAL      17                 7      10       16
 SINCE 1/1         17                 7      10       16
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.7
HIGHEST WIND SPEED/DIRECTION    40/030    DATE  03/14
HIGHEST GUST SPEED/DIRECTION    59/040    DATE  03/14

SKY COVER
AVERAGE SKY COVER           0.60

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     HEAVY RAIN                 7
RAIN                     14     LIGHT RAIN                42
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                1     SNOW                       4
LIGHT SNOW               13     FOG                       49
FOG W/VIS <= 1/4 MILE    12     HAZE                       7

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

&&

ALTHOUGH THE LATE WINTER HAD SEEN A STRETCH OF VERY WARM WEATHER, AS
THE CALENDAR TURNED TO MARCH THE WARM WEATHER ENDED. SEVERAL ROUNDS
OF ARCTIC AIR MOVED INTO NEW ENGLAND, ACCOMPANIED BY OCCASIONAL
SNOWFALL. FROM MARCH 10 THROUGH 16 THERE WERE 7 STRAIGHT DAYS THAT
PORTLAND DID NOT RISE ABOVE FREEZING, TYING AS THE LONGEST STRETCH
OF CONSECUTIVE DAYS AT OR BELOW FREEZING IN SPRING (ALSO HAPPENED
MARCH 4 TO 10, 1996). DURING THE MIDDLE OF THIS STRETCH OF VERY COLD
AIR, A SIGNIFICANT NOR`EASTER ARRIVED ON MARCH 14. MORE THAN 16
INCHES OF SNOW FELL, ACCOMPANIED BY WINDS GUSTING AS HIGH AS 59 MPH,
CAUSING SIGNIFICANT BLOWING AND DRIFTING. ALTHOUGH THE BITTER COLD
GRADUALLY BEGAN TO FADE, ANOTHER SNOWSTORM ARRIVED AT THE FIRST OF
APRIL. FROM THE EVENING OF MARCH 31 INTO APRIL 1 ANOTHER 10.9 INCHES
OF SNOW FELL, GIVING RESIDENTS ONE LAST TASTE OF WINTER. COOL
TEMPERATURES CONTINUED FOR SEVERAL DAYS, CULMINATING IN ANOTHER
NOR`EASTER ON APRIL 6 WHICH BROUGHT MORE THAN 1.8 INCHES OF RAIN.
WARMER WEATHER QUICKLY FOLLOWED, WITH THE LAST OF THE WINTER SNOW
MELTING ON APRIL 7. WARM WEATHER BEGAN TO BUILD, PERIODICALLY BEING
SET BACK BY COLD FRONTS. THE WARMEST DAY WAS ON EASTER SUNDAY, APRIL
16, WHEN THE TEMPERATURE SOARED ALL THE WAY TO 86 DEGREES. THIS WAS
FOLLOWED BY A STRONGER COLD FRONT WHICH BROUGHT COOLER WEATHER FOR
SEVERAL DAYS. MORE TYPICAL SPRING-LIKE WEATHER FOLLOWED WITH COOL,
DAMP WEATHER PERIODICALLY BROKEN BY BRIEF PERIODS OF MUCH WARMER
WEATHER. RAIN WAS OBSERVED ON 21 OUT OF 27 DAYS FROM APRIL 19
THROUGH MAY 15 WITH COOL TEMPERATURES DOMINATING. ANOTHER BRIEF BUT
INTENSE WARM UP CAME IN MID MAY WHEN THE TEMPERATURE SOARED ALL THE
WAY TO 93 DEGREES ON MAY 18, THE FIRST 90 DEGREE TEMPERATURE OF THE
YEAR. BUT THE COOL WEATHER CAME RIGHT BACK BEHIND A COLD FRONT THE
FOLLOWING DAY, WITH COOL, WET WEATHER AGAIN DOMINATING THE REST OF
THE MONTH OF MAY. RAIN FELL ON 8 OF THE LAST 10 DAYS OF MAY, WITH
MORE THAN 2.7 INCHES FALLING ON THE 25TH AND 26TH.

THE AVERAGE TEMPERATURE FOR THE SPRING WAS 42.8 DEGREES WHICH WAS
1.0 DEGREES BELOW NORMAL. THE COOLEST SPRING ON RECORD WAS IN 1956
WHEN THE AVERAGE TEMPERATURE WAS ONLY 37.9 DEGREES. THE WARMEST WAS
48.9 DEGREES IN 2010.

A TOTAL OF 15.84 INCHES OF PRECIPITATION FELL WHICH WAS 3.27 INCHES
ABOVE NORMAL AND THE WETTEST SPRING SINCE 2006. THE HEAVIEST
PRECIPITATION FELL ON MAY 25 AND 26 WHEN 2.77 INCHES WAS MEASURED.
THE WETTEST SPRING ON RECORD WAS IN 1983 WHEN 22.55 INCHES FELL. THE
DRIEST WAS IN 1965 WHEN ONLY 4.23 INCHES WAS MEASURED.

THERE WAS 29.1 INCHES OF SNOWFALL WHICH WAS 13.6 INCHES ABOVE NORMAL
AND THE SNOWIEST SPRING SINCE 2007. THE HEAVIEST SNOWFALL WAS ON
MARCH 14 WHEN 16.4 INCHES OF SNOW FELL. THE SNOWIEST SPRING ON
RECORD WAS IN 1906 WHEN 61.5 INCHES FELL. ONLY A TRACE OF SNOW WAS
OBSERVED IN 1921 AND 1910.

SNOWFALL FOR THE 2016-17 SEASON TOTALED 95.3 INCHES WHICH WAS 33.4
INCHES ABOVE NORMAL AND THE SNOWIEST SEASON SINCE 2012-13. THE
SNOWIEST SEASON WAS 1970-71 WHEN 141.5 INCHES OF SNOW FELL. THE
LEAST SNOWY SEASON WAS IN 1979-80 WHEN ONLY 27.5 INCHES FELL.

THE FOLLOWING RECORDS WERE SET OR TIED IN SPRING 2017...
DATE    RECORD                               PREVIOUS
MAR 1   40   - WARMEST LOW TEMPERATURE       37 IN 1999
MAR 11  17   - COLDEST HIGH TEMPERATURE      22 IN 1950
MAR 11  10   - COLDEST AVERAGE TEMPERATURE   12 IN 1960
MAR 12  1    - COLDEST LOW TEMPERATURE       3 IN 1984 AND 1941
MAR 14  16.3 - MOST SNOWFALL                 10.6 IN 1961
MAR 27  4    - SMALLEST TEMPERATURE RANGE    5 IN 1981 AND 3 OTHERS
MAR 28  4    - SMALLEST TEMPERATURE RANGE    4 IN 2005 /TIED/
APR 1   34   - COLDEST HIGH TEMPERATURE      34 IN 2001 /TIED/
APR 1   2    - SMALLEST TEMPERATURE RANGE    3 IN 2011 AND 2001
APR 11  35   - GREATEST TEMPERATURE RANGE    35 IN 1947 AND 1945 /TIED/
APR 16  86   - WARMEST HIGH TEMPERATURE      78 IN 1976
APR 16  67   - WARMEST AVERAGE TEMPERATURE   62 IN 2012 AND 1976
APR 21  3    - SMALLEST TEMPERATURE RANGE    4 IN 1943
MAY 2   2    - SMALLEST TEMPERATURE RANGE    4 IN 2012
MAY 14  3    - SMALLEST TEMPERATURE RANGE    4 IN 1964
MAY 18  93   - WARMEST HIGH TEMPERATURE      82 IN 1949
MAY 18  76   - WARMEST AVERAGE TEMPERATURE   65 IN 1943
MAY 26  1.74 - GREATEST PRECIPITATION        1.74 IN 1943 /TIED/
MAY 29  49   - COLDEST HIGH TEMPERATURE      50 IN 1984

$$

KIMBLE



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