Climatological Report (Seasonal)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
1145 AM EDT THU JUN 2 2016

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE SEASON, FROM
3/1/2016 TO 5/31/2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 TO 2016 /FOR TEMPERATURES/
CLIMATE RECORD PERIOD 1871 TO 2016 /FOR PRECIPITATION/
CLIMATE RECORD PERIOD 1882 TO 2016 /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            87   05/31        85       2       91  05/26
                        05/28
LOWEST             13   03/03         6       7       -2  03/01
AVG. MAXIMUM     54.5              53.0     1.5     55.2
AVG. MINIMUM     35.7              34.6     1.1     34.3
MEAN             45.1              43.8     1.3     44.8
DAYS MAX >= 90      0               0.4    -0.4        1
DAYS MAX <= 32      3               4.3    -1.3        5
DAYS MIN <= 32     36              36.8    -0.8       40
DAYS MIN <= 0       0               0.4    -0.4        1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        22.55   1983
 MINIMUM         4.23   1965
TOTALS           7.97             12.57   -4.60     9.13
DAILY AVG.       0.09              0.14   -0.05     0.10
DAYS >= .01        38              35.5     2.5       30
DAYS >= .10        17              21.6    -4.6       14
DAYS >= .50         5               8.5    -3.5        5
DAYS >= 1.00        0               2.8    -2.8        2
GREATEST
 24 HR. TOTAL    0.94   05/02

SNOWFALL (INCHES)
RECORDS
 TOTAL           61.5   1906
TOTALS           10.8              15.5    -4.7      5.3
SINCE 7/1        51.8              61.9   -10.1     94.5
SNOWDEPTH AVG.      0
DAYS >= TRACE      12               6.1     5.9       14
DAYS >= 1.0         3               3.7    -0.7        3
GREATEST
 SNOW DEPTH         3   03/21
 24 HR TOTAL      6.3   03/21

DEGREE_DAYS
HEATING TOTAL    1828              1960    -132     1878
 SINCE 7/1       6119              7001    -882     6932
COOLING TOTAL      16                 7       9       40
 SINCE 1/1         16                 7       9       40
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.3
HIGHEST WIND SPEED/DIRECTION    37/310    DATE  04/03
HIGHEST GUST SPEED/DIRECTION    49/280    DATE  04/03

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 1
RAIN                      8     LIGHT RAIN                37
FREEZING RAIN             0     LT FREEZING RAIN           2
HEAVY SNOW                1     SNOW                       3
LIGHT SNOW               10     FOG                       38
FOG W/VIS <= 1/4 MILE     7     HAZE                       5

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

&&

THE WEATHER PATTERN WHICH FEATURED MOSTLY ABOVE NORMAL TEMPERATURES
THROUGH THE WINTER WITH OCCASIONAL PERIODS OF COLDER WEATHER
CONTINUED INTO THE SPRING. FOR THE FIRST TIME SINCE 2002, ALL OF THE
WINTER SNOW PACK HAD MELTED BEFORE THE FIRST DAY OF MARCH. MOST OF
MARCH FEATURED WARM TEMPERATURES AND OCCASIONAL ROUNDS OF RAINFALL.
BUT THE WEATHER PATTERN BEGAN TO SHIFT TOWARD THE END OF MARCH. BY
THE FIRST DAY OF ASTRONOMICAL SPRING, MARCH 21, A SNOWSTORM BROUGHT
6.3 INCHES OF SNOWFALL. IT ONLY TOOK A FEW DAYS FOR THE LATE MARCH
SUN TO MELT OFF THIS FRESH SNOW, BUT IT WAS A SIGN OF A SHIFT IN THE
WEATHER PATTERN TOWARD COLDER WEATHER. THIS SHIFT BECAME MORE
APPARENT BY THE BEGINNING OF APRIL WHEN MORE LIGHT SNOW FELL AND
MUCH COLDER AIR ARRIVED. THE HIGH TEMPERATURE OF 25 DEGREES ON APRIL
4 WAS THE THIRD COLDEST HIGH TEMPERATURE EVER OBSERVED IN APRIL. THE
TEMPERATURE BEGAN TO MODERATE A BIT TOWARD THE MIDDLE OF THE MONTH,
BUT COLD AIR ARRIVED AGAIN IN LATE APRIL WITH A RARE LATE SEASON
SNOWFALL ON APRIL 26. THE LAST FREEZE OF THE SEASON WAS ON APRIL 30,
JUST A FEW DAYS EARLIER THAN NORMAL. THE COOL WEATHER CONTINUED INTO
THE FIRST FEW WEEKS OF MAY, ALONG WITH SEVERAL DAYS OF LIGHT RAIN.
BUT BY MID MAY THE COLDER WEATHER PATTERN HAD FINALLY BROKEN AND
WARMER TEMPERATURES BEGAN TO ARRIVE. THE TEMPERATURE TOPPED 80
DEGREES FOR THE FIRST TIME THIS SEASON ON MAY 28, ABOUT TWO WEEKS
LATER THAN NORMAL.

THE AVERAGE TEMPERATURE FOR THE SPRING WAS 45.1 DEGREES WHICH WAS
1.3 DEGREES ABOVE NORMAL AND TIED FOR THE 6TH WARMEST ON RECORD. THE
WARMEST SPRING WAS 2010 WITH AN AVERAGE TEMPERATURE OF 48.9 DEGREES.
THE COLDEST WAS 1956 AT ONLY 37.9 DEGREES. THE FOLLOWING TABLE LISTS
THE WARMEST SPRINGS AT PORTLAND.

WARMEST AVERAGE TEMPERATURE FOR SPRING (SINCE 1940)...
RANK  TEMP  YEAR
1     48.9  2010
2     48.3  2012
3     47.0  1991
4     46.4  1998
5     45.4  1981
6     45.1  2016 <===
      45.1  1942
8     45.0  1945
9     44.9  2009
      44.9  2006
      44.9  1986

A TOTAL OF 7.97 INCHES OF PRECIPITATION FELL WHICH WAS 4.60 INCHES
BELOW NORMAL AND THE DRIEST SPRING SINCE 1995. THE HEAVIEST
PRECIPITATION FELL DURING THE BEGINNING OF MARCH WHEN 0.96 INCHES
WAS MEASURED ON MARCH 1 AND 2. THE DRIEST SPRING WAS 1965 WHEN ONLY
4.12 INCHES OF PRECIPITATION FELL. THE WETTEST WAS 1983 WITH 22.55
INCHES.

A TOTAL OF 10.8 INCHES OF SNOW FELL WHICH WAS 4.7 INCHES BELOW
NORMAL BUT THE MOST SNOWFALL IN SPRING SINCE 2013. THE HEAVIEST SNOW
WAS ON MARCH 21 WHEN 6.3 INCHES WAS MEASURED. THE LAST SNOWFALL WAS
ON APRIL 26, ONE OF THE LATEST SNOWFALLS ON RECORD. THE SNOWIEST
SPRING WAS 1906 WHEN 61.5 INCHES FELL. ONLY A TRACE OF SNOW WAS
OBSERVED IN SPRING IN TWO YEARS, 1921 AND 1910. THE FOLLOWING TABLE
LISTS THE LARGEST LATE SEASON SNOWSTORMS.

ALL SNOWSTORMS APRIL 26 OR LATER (SINCE 1882)...
RANK  SNOW  DATE
1      7.0  MAY 10-11, 1945 (LATEST SNOWFALL)
2      3.3  APR 28-29, 1987
3      2.2  APR 26, 2016 <===
4      2.0  MAY 8-10, 1966
5      1.9  APR 26, 1887
6      1.5  APR 28, 1958
       1.5  APR 26-27 1885
8      0.5  APR 26, 1890
9      0.4  APR 27, 1993 (MOST RECENT)
10     0.1  MAY 7, 1967
       0.1  APR 27, 1933

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN SPRING 2016...
DATE    RECORD                               PREVIOUS
MAR 9   66  - WARMEST HIGH TEMPERATURE       55 IN 2012
MAR 9   40  - WARMEST LOW TEMPERATURE        39 IN 2000
MAR 9   53  - WARMEST AVERAGE TEMPERATURE    47 IN 2000
MAR 10  66  - WARMEST HIGH TEMPERATURE       58 IN 1998 AND 1977
MAR 10  41  - WARMEST LOW TEMPERATURE        37 IN 2006
MAR 10  54  - WARMEST AVERAGE TEMPERATURE    47 IN 1977
MAR 13  50  - WARMEST AVERAGE TEMPERATURE    50 IN 2012 AND 1946 /TIED/
MAR 15  38  - WARMEST LOW TEMPERATURE        37 IN 1990 AND 1945
MAR 16  39  - WARMEST LOW TEMPERATURE        38 IN 1948
APR 1   51  - WARMEST LOW TEMPERATURE        45 IN 1945
APR 1   58  - WARMEST AVERAGE TEMPERATURE    57 IN 1945
APR 4   25  - COLDEST HIGH TEMPERATURE       31 IN 1954
APR 26  2.2 - GREATEST SNOWFALL              1.9 IN 1887
MAY 2   3   - SMALLEST TEMPERATURE RANGE     4 IN 1962

$$

KIMBLE



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