Climatological Report (Monthly)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
157 PM EDT FRI JUN 2 2017

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1868 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              98   05/22/1911
 LOW               21   05/03/1966
                        05/10/1947
HIGHEST            95   05/18        89       6       94  05/28
LOWEST             30   05/09        28       2       32  05/10
AVG. MAXIMUM     66.0              68.9    -2.9     70.5
AVG. MINIMUM     44.1              42.6     1.5     44.8
MEAN             55.0              55.8    -0.8     57.7
DAYS MAX >= 90      2               0.6     1.4        2
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      2               3.5    -1.5        1
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.09   2006
 MINIMUM         0.32   1899
TOTALS           5.91              3.66    2.25     2.63
DAILY AVG.       0.19              0.12    0.07     0.08
DAYS >= .01        16              12.4     3.6       13
DAYS >= .10        12               7.1     4.9        7
DAYS >= .50         4               2.4     1.6        2
DAYS >= 1.00        1               0.7     0.3        0
GREATEST
 24 HR. TOTAL    1.30   05/25 TO 05/26

SNOWFALL (INCHES)
RECORDS
 TOTAL            5.0   1945
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1        86.3              61.4    24.9     29.7
SNOWDEPTH AVG.      0
DAYS >= TRACE       0               0.0     0.0        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.0   MM

DEGREE_DAYS
HEATING TOTAL     325               303      22      262
 SINCE 7/1       6397              7150    -753     6019
COOLING TOTAL      24                16       8       40
 SINCE 1/1         32                18      14       40
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.1
HIGHEST WIND SPEED/DIRECTION    32/310    DATE  05/03
HIGHEST GUST SPEED/DIRECTION    41/320    DATE  05/03

SKY COVER
AVERAGE SKY COVER           0.60

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     HEAVY RAIN                 5
RAIN                     12     LIGHT RAIN                19
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     FOG                       16
FOG W/VIS <= 1/4 MILE     2     HAZE                       2

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

&&
A PERSISTENT AREA OF LOW PRESSURE DOMINATED THE WEATHER PATTERN IN
NEW ENGLAND THROUGH THE FIRST HALF OF MAY. THIS BROUGHT MOSTLY
COOL TEMPERATURES AND FREQUENT AFTERNOON SHOWERS ALONG WITH
OCCASIONAL PERIODS OF STEADIER RAINFALL. THE FIRST DAY OF THE MONTH
ONLY SAW THE TEMPERATURE REACH 49 DEGREES. RAIN WAS OBSERVED ON 11
OF THE FIRST 15 DAYS OF THE MONTH AT CONCORD. THE LAST FREEZE OF THE
SEASON OCCURRED ON MAY 9, ABOUT A WEEK LATER THAN NORMAL. THE PESKY
LOW PRESSURE AREA FINALLY MOVED OUT OF THE REGION ON THE 16TH, WITH
A RIDGE OF HIGH PRESSURE BUILDING IN BEHIND IT. THIS BROUGHT A
PERIOD OF MUCH WARMER WEATHER, INCLUDING THE FIRST TWO 90 DEGREE
DAYS OF THE SEASON ON THE 17TH AND 18TH. THIS MINI-HEAT WAVE WAS
BROUGHT TO AN END WHEN A COLD FRONT DROPPED DOWN FROM CANADA ON THE
19TH, BRINGING COOLER WEATHER FOR THE NEXT FEW DAYS. A NOR`EASTER
MOVED UP THE COAST ON THE NIGHT OF THE 25TH, BRINGING 1.30 INCHES OF
RAIN TO THE CITY IN A 24 HOUR PERIOD. THE HOLIDAY WEEKEND CLEARED
OUT WITH WARM SUNNY DAYS BEFORE COLD, CLOUDY MEMORIAL DAY ON THE
29TH WITH HIGH TEMPERATURE ONLY REACHING 54 DEGREES.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 55.0 DEGREES WHICH WAS 0.8
DEGREES BELOW NORMAL. THE WARMEST MAY ON RECORD WAS IN 1880 WHEN THE
AVERAGE TEMPERATURE WAS 64.4 DEGREES. THE COLDEST WAS IN 1917 WHEN IT
WAS ONLY 47.6 DEGREES.

A TOTAL OF 5.91 INCHES OF PRECIPITATION FELL WHICH WAS 2.25 INCHES
ABOVE NORMAL AND MADE 2017 THE 8TH WETTEST MAY ON RECORD. THE
HEAVIEST PRECIPITATION WAS ON THE 26TH WHEN 1.19 INCHES FELL. THE
WETTEST MAY ON RECORD WAS IN 2006 WHEN 11.09 INCHES WAS MEASURED.
THE DRIEST WAS IN 1899 WHEN ONLY 0.32 INCHES FELL.

WETTEST MAY (SINCE 1868)...
RANK  VALUE  YEAR
1     11.09  2006
2      9.52  1984
3      8.26  1954
4      6.81  1868
5      6.24  1940
       6.24  1892
7      6.09  1901
8      5.91  2017 <===
9      5.89  1945
10     5.44  1906

NO SNOW FELL DURING THE MONTH. SNOWFALL IN MAY IS QUITE RARE, WITH
MEASURABLE SNOW ONLY BEING OBSERVED IN 6 YEARS OF THE 150-YEAR
HISTORY OF SNOWFALL OBSERVATIONS AT CONCORD. THE MOST SNOWFALL WAS
IN 1945 WHEN 5.0 INCHES FELL. THE MOST RECENT MEASURABLE SNOWFALL
WAS IN 1966. IN ADDITION TO THE 6 YEARS WITH MEASURABLE SNOWFALL,
THERE HAVE BEEN AN ADDITIONAL 24 YEARS WITH A TRACE OF SNOWFALL OR
HAIL BEING OBSERVED, MOST RECENTLY IN 2002.

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN MAY 2017...
DATE  RECORD                                 PREVIOUS
17    93 - WARMEST HIGH TEMPERATURE          93 IN 1977, TIED
18    95 - WARMEST HIGH TEMPERATURE          90 IN 1906 AND 1889

$$

BECKER



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