Climatological Report (Monthly)
Issued by NWS Sioux Falls, SD

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CXUS53 KFSD 011740
CLMMHE

CLIMATE REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1140 AM CST TUE JAN 1 2019

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

...THE MITCHELL SD CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1893 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              70   12/01/1998
 LOW              -34   12/29/1917
HIGHEST            48   12/19        MM      MM       56  12/02
LOWEST             -8   12/29        MM      MM      -22  12/31
AVG. MAXIMUM     34.1              29.8     4.3     32.5
AVG. MINIMUM     16.1              12.0     4.1     13.4
MEAN             25.1              20.9     4.2     22.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     11              16.9    -5.9       12
DAYS MIN <= 32     31              30.4     0.6       29
DAYS MIN <= 0       3               5.6    -2.6        7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM           MM   MM
 MINIMUM           MM   MM
TOTALS           1.79              0.45    1.34     0.62
DAILY AVG.       0.06              0.01    0.05     0.02
DAYS >= .01         5                MM      MM        5
DAYS >= .10         4                MM      MM        2
DAYS >= .50         1                MM      MM        0
DAYS >= 1.00        0                MM      MM        0
GREATEST
 24 HR. TOTAL    0.69   12/27 TO 12/27

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS           19.1                MM      MM     10.5
SINCE 7/1        20.8                MM      MM     11.7
SNOWDEPTH AVG.      3                MM      MM        2
DAYS >= 1.0         5                MM      MM        4
GREATEST
 SNOW DEPTH        11   12/28                          6  12/31
 24 HR TOTAL      9.0   12/27 TO 12/27

DEGREE_DAYS
HEATING TOTAL    1230              1367    -137     1294
 SINCE 7/1       2988              2935      53     2683
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1080               824     256      890
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.0
HIGHEST WIND SPEED/DIRECTION    38/340    DATE  12/28
HIGHEST GUST SPEED/DIRECTION    55/350    DATE  12/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     78

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP                0
HEAVY RAIN                1     RAIN                        1
LIGHT RAIN                5     FREEZING RAIN               0
LT FREEZING RAIN          2     HAIL                        0
HEAVY SNOW                2     SNOW                        5
LIGHT SNOW                8     SLEET                       1
FOG                      18     FOG W/VIS <= 1/4 MILE       4
HAZE                      0

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

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