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Climatological Report (Seasonal)
Issued by NWS Portland, ME
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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
453 PM EST MON DEC 5 2016

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE FALL SEASON, FROM
9/1/2016 TO 11/30/2016...

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              95   09/11/1983
                        09/07/1945
 LOW                3   11/24/1989
HIGHEST            91   09/09        86       5       92  09/07
LOWEST             23   11/29        16       7       18  11/24
AVG. MAXIMUM     61.5              58.9     2.6     62.9
AVG. MINIMUM     42.3              40.0     2.3     41.7
MEAN             51.9              49.4     2.5     52.3
DAYS MAX >= 90      1               0.3     0.7        1
DAYS MAX <= 32      0               1.0    -1.0        1
DAYS MIN <= 32     21              26.1    -5.1       26
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        24.18   2005
 MINIMUM         4.88   1915
TOTALS          13.28             13.49   -0.21    11.72
DAILY AVG.       0.15              0.15    0.00     0.13
DAYS >= .01        30              30.9    -0.9       24
DAYS >= .10        18              19.4    -1.4       13
DAYS >= .50         6               8.1    -2.1        6
DAYS >= 1.00        4               3.6     0.4        2
GREATEST
 24 HR. TOTAL    3.99   10/21 TO 10/22

SNOWFALL (INCHES)
RECORDS
 TOTAL           24.3   1921
TOTALS            0.5               1.9    -1.4        T
SINCE 7/1         0.5               1.9    -1.4        T
SNOWDEPTH AVG.      0
DAYS >= TRACE       3               1.5     1.5        1
DAYS >= 1.0         0               0.7    -0.7        0
GREATEST
 SNOW DEPTH         T   11/22
                        11/21
 24 HR TOTAL      0.5   11/20 TO 11/21

DEGREE_DAYS
HEATING TOTAL    1238              1446    -208     1236
 SINCE 7/1       1252              1491    -239     1246
COOLING TOTAL      68                31      37       97
 SINCE 1/1        553               359     194      492
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.8
HIGHEST WIND SPEED/DIRECTION    36/310    DATE  11/11
HIGHEST GUST SPEED/DIRECTION    45/310    DATE  11/11

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     HEAVY RAIN                 8
RAIN                     16     LIGHT RAIN                37
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                3     FOG                       37
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.

&&

SUMMER WARMTH CONTINUED INTO THE MIDDLE OF SEPTEMBER. THE
TEMPERATURE SOARED INTO THE 80S OR HIGHER ON 5 OUT OF 6 DAYS FROM
SEPTEMBER 9 THRU 14. THE PERSISTENT SUMMER WARMTH DID NOT REALLY
COME TO AN END UNTIL ASTRONOMICAL FALL BEGAN. COOLER AIR FINALLY
BEGAN TO ARRIVE AT THE END OF SEPTEMBER WITH MORE FALL-LIKE
TEMPERATURES. PERIODS OF WARMER WEATHER WERE SOON FOLLOWED BY COLD
FRONTS AND COOLER WEATHER RIGHT THROUGH THE MIDDLE OF OCTOBER. THE
FIRST FREEZE OF THE SEASON OCCURRED ON OCTOBER 15, ABOUT A WEEK
LATER THAN NORMAL BUT THE EARLIEST SINCE 2012. MEANWHILE THE DROUGHT
WHICH BEGAN LATE THIS SPRING CONTINUED AND INTENSIFIED THROUGH THE
LATE SUMMER AND INTO THE FALL. WARM WEATHER GRADUALLY BECAME MORE
DOMINANT THROUGH THE MIDDLE OF OCTOBER, PEAKING WITH A HIGH
TEMPERATURE OF 78 DEGREES ON OCTOBER 19. THE PATTERN BEGAN TO CHANGE
ON OCTOBER 21 WHEN TROPICAL MOISTURE SURGED NORTHWARD INTO NEW
ENGLAND AHEAD OF AN APPROACHING COLD FRONT. VERY HEAVY RAIN FELL
WITH 4.27 INCHES OF RAIN OBSERVED IN JUST A FEW HOURS ON THE NIGHT
OF OCTOBER 21 INTO THE 22ND. COOLER AIR MOVED IN BEHIND THIS FRONT
AND ANOTHER HEAVY RAINSTORM BROUGHT MORE THAN 2 INCHES OF RAIN IN
LATE OCTOBER. UP UNTIL THIS POINT, VERY LITTLE RAIN HAD FALLEN
DURING THE FALL. THESE TWO HEAVY RAINSTORMS WERE ENOUGH TO PROVIDE
SOME RELIEF TO THE INTENSIFYING DROUGHT. A MORE FALL-LIKE WEATHER
PATTERN RETURNED THROUGH THE MIDDLE OF NOVEMBER WITH ALTERNATING
PERIODS OF WARM AND COOLER WEATHER WITH OCCASIONAL RAIN. THE WARMTH
BEGAN TO BUILD AGAIN THROUGH THE MIDDLE OF NOVEMBER BEFORE COLDER
AIR MOVED IN AGAIN ON NOVEMBER 20 ALONG WITH THE FIRST ACCUMULATING
SNOWFALL OF THE SEASON. COOLER WEATHER WAS THE RULE FOR THE REST OF
NOVEMBER.

THE AVERAGE TEMPERATURE FOR THE FALL WAS 51.9 DEGREES WHICH WAS 2.5
DEGREES ABOVE NORMAL AND THE THIRD WARMEST FALL ON RECORD. THE
WARMEST FALL WAS 2011 WHEN THE AVERAGE TEMPERATURE WAS 53.0 DEGREES.
THE COOLEST WAS 1976 AT ONLY 45.6 DEGREES. THE FOLLOWING TABLE LISTS
THE WARMEST FALLS AT PORTLAND.

WARMEST AVERAGE TEMPERATURE IN FALL (SINCE 1940)
RANK  TEMP  YEAR
1     53.0  2011
2     52.3  2015
3     51.9  2016 <===
4     51.5  2005
      51.5  1961
6     51.3  1990
      51.3  1970
8     51.2  2014
9     51.0  2007
      51.0  2006

THE COLDEST TEMPERATURE OBSERVED THIS FALL WAS 23 DEGREES ON
NOVEMBER 29. THIS TIED FOR THE SECOND WARMEST FALL LOW TEMPERATURE
ON RECORD. THE FOLLOWING TABLE LISTS THE YEARS WITH THE WARMEST FALL
LOW TEMPERATURES.

LOWEST TEMPERATURE IN FALL (1940 TO PRESENT)
RANK  TEMP  YEAR
1      24   1998
2      23   2016 <===
       23   2009
       23   1975
5      22   1990
6      21   2011
       21   1999
       21   1988
       21   1983
       21   1948

A TOTAL OF 13.28 INCHES OF PRECIPITATION FELL WHICH WAS 0.21 INCHES
BELOW NORMAL. THIS WAS THE WETTEST FALL SINCE 2010. NEARLY HALF OF
THIS RAIN FELL ON JUST TWO DAYS IN LATE OCTOBER, THE 21ST AND 28TH.
OTHERWISE THE FALL WAS CHARACTERIZED BY DRY WEATHER AND A CONTINUING
DROUGHT. THE WETTEST FALL WAS 2005 WHEN 24.18 INCHES FELL. THE
DRIEST WAS 1915 WITH ONLY 4.88 INCHES.

SNOWFALL AMOUNTED TO 0.5 INCHES WHICH WAS 1.4 INCHES BELOW NORMAL.
ALL OF THIS SNOW FELL ON NOVEMBER 20 AND 21. FALL SNOWFALL CAN BE
QUITE VARIABLE, WITH MEASURABLE SNOWFALL OBSERVED ABOUT 75 PERCENT
OF THE TIME. THE SNOWIEST FALL WAS 1921 WHEN 24.3 INCHES WAS
MEASURED. NO SNOW FELL IN FALL IN 4 SEPARATE YEARS, MOST RECENTLY IN
2006. ONLY A TRACE FELL IN 30 SEPARATE YEARS, MOST RECENTLY IN 2015.

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN FALL 2016...
DATE    RECORD                               PREVIOUS
SEP 19  65   - WARMEST LOW TEMPERATURE       64 IN 1952
SEP 20  64   - WARMEST LOW TEMPERATURE       62 IN 2003 AND 2000

$$

KIMBLE
National Weather Service Regional Headquarters
