Climatological Report (Monthly)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
515 PM EST TUE NOV 3 2020

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

...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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              92   10/16/1879
 LOW               10   10/21/1972
                        10/24/1969
HIGHEST            77   10/10        79      -2       71  10/07
LOWEST             16   10/31        21      -5       27  10/06
                                                          10/05
AVG. MAXIMUM     60.1              60.5    -0.4     60.8
AVG. MINIMUM     38.2              35.8     2.4     39.5
MEAN             49.1              48.2     0.9     50.2
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      8              12.0    -4.0        7
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        14.57   2005
 MINIMUM         0.05   1924
TOTALS           4.26              4.04    0.22     5.27
DAILY AVG.       0.14              0.13    0.01     0.17
DAYS >= .01        10              10.1    -0.1       17
DAYS >= .10         7               6.4     0.6       11
DAYS >= .50         4               2.4     1.6        2
DAYS >= 1.00        1               1.2    -0.2        2
GREATEST
 24 HR. TOTAL    1.34   10/13

SNOWFALL (INCHES)
RECORDS
 TOTAL           23.0   2011
TOTALS            0.8                 T     0.8      0.0
SINCE 7/1         0.8                 T     0.8      0.0
SNOWDEPTH AVG.      0
DAYS >= TRACE       1               0.0     1.0        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         T   10/30
 24 HR TOTAL      0.8   10/30

DEGREE_DAYS
HEATING TOTAL     485               524     -39      453
 SINCE 7/1        660               759     -99      651
COOLING TOTAL       0                 2      -2        0
 SINCE 1/1        726               452     274      492
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.2
HIGHEST WIND SPEED/DIRECTION    29/280    DATE  10/07
HIGHEST GUST SPEED/DIRECTION    42/300    DATE  10/07

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     73


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

&&

AFTER A DRY SUMMER AND VERY DRY SEPTEMBER, THE WEATHER PATTERN
BECAME MORE ACTIVE AS OCTOBER BEGAN. WITH THE STORM TRACK CLOSER TO
THE AREA, MORE FREQUENT STORM SYSTEMS BROUGHT WELCOME RAINS AFTER A
SUMMER-LONG DROUGHT. A TOPSY TURVY TEMPERATURE TREND ALSO OCCURRED,
WHICH IS TYPICAL OF THE FREQUENT FRONTAL SYSTEMS THAT ACCOMPANY FALL
IN NEW ENGLAND. THE WARMEST TEMPERATURE WAS 77 ON THE 10TH. THE MOST
SIGNIFICANT RAINFALL CAME IN THE MIDDLE OF THE MONTH WHEN TWO STORM
SYSTEMS BROUGHT DRENCHING RAINS. THE FIRST BROUGHT MORE THAN AN INCH
ON THE 13TH. THE SECOND BROUGHT MORE THAN AN INCH AND A HALF ON THE
16TH AND 17TH. CONDITIONS TURNED MORE CONSISTENTLY COLD TOWARD THE
END OF THE MONTH. CONCORD EVEN SAW ITS FIRST SNOWFALL ON THE 30TH
WITH ALMOST AN INCH ACCUMULATING. THE TEMPERATURE FELL TO 16 DEGREES
ON HALLOWEEN.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 48.2 DEGREES WHICH WAS 0.9
DEGREES ABOVE NORMAL AND THE 6TH CONSECUTIVE MONTH WITH ABOVE NORMAL
TEMPERATURES. THE WARMEST OCTOBER WAS IN 1879 WHEN THE AVERAGE
TEMPERATURE WAS 57.6 DEGREES. THE COLDEST WAS 42.2 DEGREES IN 1925.

A TOTAL OF 4.26 INCHES OF PRECIPITATION FELL WHICH WAS 0.22 INCHES
ABOVE NORMAL AND THE FIRST MONTH WITH ABOVE NORMAL PRECIPITATION
SINCE APRIL. THE HEAVIEST RAIN FELL ON THE 16TH AND 17TH WHEN 1.64
INCHES WAS RECORDED. THE WETTEST OCTOBER WAS IN 2005 WHEN 14.57
INCHES FELL. THE DRIEST WAS IN 1924 WITH ONLY 0.05 INCHES.

THERE WAS 0.8 INCHES OF SNOWFALL WHICH FELL ON THE 30TH.
ACCUMULATING SNOWFALL IS RARE IN OCTOBER, OCCURRING ONLY ABOUT ONCE
EVERY TEN YEARS. THE SNOWIEST OCTOBER WAS IN 2011 WHEN 23.0 INCHES
WAS MEASURED. THE FOLLOWING TABLE LISTS THE SNOWIEST OCTOBERS IN
CONCORD.

MOST SNOW IN OCTOBER (SINCE 1868)...
RANK  SNOW  YEAR
1     23.0  2011
2      3.0  1868
       3.0  1884
4      2.1  1969
5      1.4  2002
6      1.3  1979
       1.3  1925
8      1.0  1870
9      0.8  2020  <===
10     0.7  1952
       0.7  1926

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

NO DAILY RECORDS WERE SET OR TIED IN OCTOBER 2020.

$$

KIMBLE


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