National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

943
CXUS51 KGYX 081027
CLSCON

PWMCLMCON 000
TTAA00 KGYX 020027


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
527 AM EST TUE DEC 8 2020

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE FALL SEASON, FROM
9/1/2020 TO 11/30/2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1868 TO 2020

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              98   09/02/1953
 LOW              -17   11/30/1875
HIGHEST            86   09/08        88      -2       86  09/23
                                                          09/22
LOWEST             13   11/19        11       2        7  11/17
                        11/18
AVG. MAXIMUM     63.2              60.5     2.7     59.3
AVG. MINIMUM     38.1              37.1     1.0     36.6
MEAN             50.6              48.8     1.8     48.0
DAYS MAX >= 90      0               0.6    -0.6        0
DAYS MAX <= 32      1               1.3    -0.3        4
DAYS MIN <= 32     33              35.0    -2.0       33
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        22.08   2005
 MINIMUM         2.88   1908
TOTALS           9.32             11.14   -1.82     9.81
DAILY AVG.       0.10              0.12   -0.02     0.11
DAYS >= .01        26              30.6    -4.6       36
DAYS >= .10        14              19.2    -5.2       23
DAYS >= .50         8               7.4     0.6        3
DAYS >= 1.00        2               2.8    -0.8        3
GREATEST
 24 HR. TOTAL    1.44   11/30

SNOWFALL (INCHES)
RECORDS
 TOTAL           25.7   2011
TOTALS            0.8               2.6    -1.8      0.3
SINCE 7/1         0.8               2.6    -1.8      0.3
SNOWDEPTH AVG.      0
DAYS >= TRACE       4               1.9     2.1        6
DAYS >= 1.0         0               1.0    -1.0        0
GREATEST
 SNOW DEPTH         T   10/30
 24 HR TOTAL      0.8   10/30

DEGREE_DAYS
HEATING TOTAL    1337              1512    -175     1556
 SINCE 7/1       1366              1560    -194     1576
COOLING TOTAL      50                39      11       28
 SINCE 1/1        726               452     274      492
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.3
HIGHEST WIND SPEED/DIRECTION    32/310    DATE  11/02
HIGHEST GUST SPEED/DIRECTION    46/260    DATE  11/15

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     69


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

&&

DROUGHT WHICH BEGAN IN SPRING AND CONTINUED THROUGH SUMMER
INTENSIFIED AGAIN IN SEPTEMBER AS A SERIES OF HIGH PRESSURE SYSTEMS
BROUGHT DRY CONTINENTAL AIR MASSES INTO THE REGION FOR THE FIRST 4
WEEKS OF FALL. COOL HIGH PRESSURE REMAINED STATIONARY OVER THE
REGION IN THE MIDDLE OF SEPTEMBER WITH MANY COOL DAYS AND EVEN
COOLER NIGHTS. THE TEMPERATURE DROPPED INTO THE 20S FOR 4
CONSECUTIVE NIGHTS FROM SEPTEMBER 19 THROUGH 22. AFTER FALLING TO 27
ON SEPTEMBER 22, IT WARMED ALL THE WAY UP TO 80 DEGREES THE VERY
NEXT DAY, THE FIRST OF SEVERAL 80 DEGREE DAYS AT THE END OF THAT
MONTH. FINALLY SOME RAIN CAME ON SEPTEMBER 30, ACCOMPANIED BY 41 MPH
WIND GUSTS. A SERIES OF FRONTS BROUGHT ALTERNATING COOLER AND WARMER
CONDITIONS AS THE STORM TRACK SHIFTED TOWARD THE REGION IN OCTOBER.
THE FIRST SIGNIFICANT STORM SYSTEM BROUGHT MORE THAN AN INCH OF RAIN
ON OCTOBER 13, WITH ANOTHER INCH AND A HALF FALLING A FEW DAYS LATER
ON OCTOBER 16 AND 17. CONDITIONS TURNED COOLER IN THE LAST PART OF
OCTOBER WITH THE FIRST SNOW OF THE SEASON FALLING JUST BEFORE
HALLOWEEN. THE COOL WEATHER LASTED A COUPLE OF WEEKS BEFORE CONCORD
SAW ONE OF ITS MOST INTENSE AND LONG LASTING LATE SEASON WARM SPELLS
ON RECORD. BEGINNING ON NOVEMBER 5 THE TEMPERATURE TOPPED 70 DEGREES
FOR 7 STRAIGHT DAYS. A COLD FRONT ON NOVEMBER 12 BROUGHT THIS
STRETCH OF UNUSUALLY WARM WEATHER TO AN END, WITH MORE FREQUENT
STORMINESS RETURNING. THE FIRST STORM BROUGHT MORE WIND THAN RAIN ON
NOVEMBER 15 WHEN WINDS GUSTED TO 46 MPH. THE NEXT STORM BROUGHT
NEARLY AN INCH OF RAIN ON NOVEMBER 23. A FEW DAYS LATER ANOTHER
STORM BROUGHT AN INCH OF RAIN ON NOVEMBER 25 AND 26. ONE MORE STORM
BROUGHT NEARLY AN INCH AND A HALF OF RAIN ON NOVEMBER 30. THE MORE
FREQUENT WET WEATHER IN THE LAST HALF OF FALL HELPED TO EASE THE
DROUGHT.

THE AVERAGE TEMPERATURE FOR THE FALL WAS 50.6 DEGREES WHICH WAS 1.8
DEGREES ABOVE NORMAL. THE WARMEST FALL WAS IN 2017 WHEN THE AVERAGE
TEMPERATURE WAS 53.5 DEGREES. THE COOLEST WAS 43.7 DEGREES IN 1972.

A TOTAL OF 9.32 INCHES OF PRECIPITATION FELL WHICH WAS 1.82 INCHES
BELOW NORMAL. THE HEAVIEST PRECIPITATION FELL ON NOVEMBER 30 WHEN
1.44 INCHES WAS MEASURED. THE DRIEST FALL WAS IN 1908 WHEN ONLY 2.88
INCHES WAS RECORDED. THE WETTEST WAS IN 2005 WITH 22.08 INCHES.

THERE WAS 0.8 INCHES OF SNOWFALL WHICH WAS 1.8 INCHES BELOW NORMAL.
ALL OF THIS SNOW FELL ON OCTOBER 30. SNOW IN FALL IS OFTEN HIT OR
MISS. IN 153 YEARS OF RECORDS THERE HAVE BEEN 3 YEARS WITH NO SNOW
IN FALL, MOST RECENTLY IN 2015. THERE HAVE BEEN AN ADDITIONAL 29
YEARS WHICH RECORDED ONLY A TRACE OF SNOWFALL, MOST RECENTLY IN
2010. THE SNOWIEST FALL WAS IN 2011 WHEN 25.7 INCHES FELL.

AFTER A VERY LATE SNOWFALL IN SPRING AND AN EARLY SNOWFALL IN FALL,
CONCORD SAW ONE OF ITS SHORTEST SNOW-FREE SEASONS ON RECORD IN 2020.
THE FOLLOWING TABLE LISTS THE SHORTEST SNOW-FREE SEASONS.

SHORTEST PERIOD BETWEEN LAST SNOW AND FIRST SNOW (SINCE 1868)...
RANK  DAYS  DATES
1      172  APR 20 TO OCT 10, 1925
2      173  MAY 9 TO OCT 30, 2020  <===
3      180  APR 25 TO OCT 23, 2002
       180  APR 9 TO OCT 7, 1911
       180  APR 11 TO OCT 9, 1888
6      181  APR 22 TO OCT 21, 1940
7      183  APR 9 TO OCT 10, 1979
8      186  APR 23 TO OCT 27, 2011
9      189  MAY 11 TO NOV 17, 1945
       189  MAY 13 TO NOV 19, 1914
       189  APR 20 TO OCT 27, 1904
       189  APR 10 TO OCT 17, 1868

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN FALL 2020...
DATE    RECORD                               PREVIOUS
SEP 19  28   - COLDEST LOW TEMPERATURE       30 IN 1990 AND OTHERS
SEP 20  27   - COLDEST LOW TEMPERATURE       28 IN 1993, 1979
SEP 21  27   - COLDEST LOW TEMPERATURE       28 IN 1962
SEP 28  65   - WARMEST LOW TEMPERATURE       64 IN 1881
NOV 8   75   - WARMEST HIGH TEMPERATURE      72 IN 1895
NOV 9   75   - WARMEST HIGH TEMPERATURE      74 IN 1945
NOV 10  76   - WARMEST HIGH TEMPERATURE      73 IN 1931
NOV 11  73   - WARMEST HIGH TEMPERATURE      70 IN 2002
NOV 30  1.44 - GREATEST PRECIPITATION        1.18 IN 1923

$$

KIMBLE