Climatological Report (Monthly)
Issued by NWS Aberdeen, SD

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000
CXUS53 KABR 011513
CLMABR


CLIMATE REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
900 AM CST MON JAN 1 2018

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

...THE ABERDEEN SD CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1893 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              69   12/06/1939
 LOW              -39   12/31/1967
HIGHEST            51   12/02        MM      MM       41  12/04
LOWEST            -32   12/31        MM      MM      -37  12/18
AVG. MAXIMUM     28.6              25.5     3.1     23.4
AVG. MINIMUM      6.5               5.9     0.6      3.1
MEAN             17.6              15.7     1.9     13.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     16              19.9    -3.9       21
DAYS MIN <= 32     31              30.8     0.2       31
DAYS MIN <= 0      12               9.9     2.1       12

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.00   1909
 MINIMUM            T   1986
TOTALS           0.35              0.52   -0.17     1.78
DAYS >= .01         7               6.5     0.5        9
DAYS >= .10         1               1.6    -0.6        3
DAYS >= .50         0               0.1    -0.1        1
DAYS >= 1.00        0               0.0     0.0        1

SNOWFALL (INCHES)
RECORDS
 TOTAL           24.6   2010
 SNOW DEPTH        21   12/31/1996
TOTALS            3.6               6.9    -3.3     10.8
SINCE 7/1         4.4              14.6   -10.2     16.0
SNOWDEPTH AVG.      0                MM      MM        2
DAYS >= TRACE      12               6.7     5.3       18
DAYS >= 1.0         1               2.1    -1.1        4
GREATEST
 SNOW DEPTH         2   12/31                          8  12/19
                        12/30                             12/18
                                                          12/17

DEGREE_DAYS
HEATING TOTAL    1463              1528     -65     1597
 SINCE 7/1       3240              3491    -251     2947
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        552               525      27      722

FREEZE DATES
RECORD
 EARLIEST     MM
 LATEST       MM
EARLIEST      12/01             MM
LATEST                          MM
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.3
RESULTANT WIND SPEED/DIRECTION   5/304
HIGHEST WIND SPEED/DIRECTION    40/320    DATE  12/04
HIGHEST GUST SPEED/DIRECTION    52/320    DATE  12/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW               12     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      1
HAZE                      8

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

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