Climatological Report (Seasonal)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
740 AM EDT SUN SEP 3 2017

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE SUMMER SEASON, FROM
6/1/2017 TO 8/31/2017...

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             102   07/03/1966
                        07/04/1911
 LOW               29   08/31/1965
HIGHEST            97   06/12        95       2       99  08/12
LOWEST             41   06/04        37       4       46  08/23
                        06/03                             06/11
AVG. MAXIMUM     80.4              80.2     0.2     84.1
AVG. MINIMUM     55.2              55.5    -0.3     56.9
MEAN             67.8              67.8     0.0     70.5
DAYS MAX >= 90      9               9.9    -0.9       22
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        20.49   1897
 MINIMUM         2.74   1999
TOTALS           9.45             10.61   -1.16     5.48
DAILY AVG.       0.10              0.12   -0.02     0.06
DAYS >= .01        31              33.4    -2.4       26
DAYS >= .10        16              20.2    -4.2       16
DAYS >= .50         5               7.0    -2.0        3
DAYS >= 1.00        2               2.6    -0.6        0
GREATEST
 24 HR. TOTAL    1.98   06/06

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.0
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0
DAYS >= TRACE       0               0.0     0.0        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0
 24 HR TOTAL      0.0

DEGREE_DAYS
HEATING TOTAL     132               133      -1       53
 SINCE 7/1         53                48       5       12
COOLING TOTAL     413               395      18      584
 SINCE 1/1        445               413      32      624
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.8
HIGHEST WIND SPEED/DIRECTION    24/300    DATE  08/09
HIGHEST GUST SPEED/DIRECTION    35/190    DATE  07/01

SKY COVER
AVERAGE SKY COVER           0.30

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              9     HEAVY RAIN                10
RAIN                     16     LIGHT RAIN                37
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     FOG                       52
FOG W/VIS <= 1/4 MILE    12     HAZE                       3

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

&&

THE SUMMER BEGAN WITH A PERIOD OF COOL, WET WEATHER. RAIN WAS
OBSERVED ON 6 OF THE FIRST 7 DAYS OF JUNE, INCLUDING NEARLY 2 INCHES
OF RAIN ON JUNE 6. BUT SOON A WARM, HUMID AIR MASS MOVED INTO THE
AREA. CONCORD SAW 3 STRAIGHT DAYS ABOVE 90 DEGREES FROM JUNE 11 THRU
JUNE 13. THE WARM WEATHER CONTINUED FOR ANOTHER TWO WEEKS BEFORE
THERE WAS A RETURN TO COOLER, SHOWERY WEATHER. ALTERNATING PERIODS
OF WARMER AND COOLER WEATHER FOLLOWED, WITH THE WARMER AIR BEGINNING
TO BUILD AGAIN THROUGH MID JULY. CONCORD SAW ANOTHER 3 STRAIGHT DAYS
OF 90 DEGREE HEAT FROM JULY 19 THRU 21. THE MID SUMMER HEAT BROKE
WHEN A COLD FRONT CAME THROUGH ON JULY 23, BRINGING SIGNIFICANTLY
COOLER WEATHER. THE HIGH TEMPERATURE ON JULY 24 WAS ONLY 61 DEGREES,
THE COLDEST JULY HIGH TEMPERATURE IN 25 YEARS (SINCE JULY 4, 1992).
THE GENERALLY COOL WEATHER LASTED FOR ABOUT A WEEK BEFORE THE HEAT
BEGAN TO ARRIVE AGAIN. ALTHOUGH THERE WERE A FEW PERIODS OF WARMER
TEMPERATURES IN AUGUST, HUMIDITY WAS LOW WHICH ALLOWED NIGHTTIME
TEMPERATURES TO COOL EASILY MOST NIGHTS. A FRONTAL SYSTEM BROUGHT
MORE THAN AN INCH AND A HALF OF RAINFALL ON AUGUST 18, A NOTABLE
EXCEPTION TO WHAT HAD BECOME A FAIRLY DRY SUMMER. AFTER ONE MORE HOT
DAY ON AUGUST 22, THE WEATHER PATTERN SHIFTED WITH FALL-LIKE WEATHER
ARRIVING FOR THE LAST WEEK OF AUGUST.

THE AVERAGE TEMPERATURE FOR THE SUMMER WAS 67.8 DEGREES WHICH IS THE
NORMAL VALUE FOR SUMMER. THE WARMEST SUMMER ON RECORD WAS IN 1872
WHEN THE AVERAGE TEMPERATURE WAS 72.3 DEGREES. THE COOLEST WAS ONLY
62.6 DEGREES IN 1903.

A TOTAL OF 9.45 INCHES OF RAIN FELL WHICH WAS 1.16 INCHES BELOW
NORMAL. THE HEAVIEST RAIN FELL ON JUNE 6 WHEN 1.98 INCHES WAS
RECORDED. THE DRIEST SUMMER ON RECORD WAS IN 1999 WHEN ONLY 2.74
INCHES WAS MEASURED. THE WETTEST WAS IN 1897 WHEN 20.49 INCHES FELL.

THE FOLLOWING RECORDS WERE SET OR TIED IN SUMMER 2017...
DATE    RECORD                               PREVIOUS
JUN 12  97   - WARMEST HIGH TEMPERATURE      94 IN 1973

$$

KIMBLE



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