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

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CXUS53 KFSD 011919
CLMMHE

CLIMATE REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
115 PM CST MON JAN 1 2018

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

...THE MITCHELL 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              70   12/01/1998
 LOW              -34   12/29/1917
HIGHEST            56   12/02        MM      MM       49  12/05
LOWEST            -22   12/31        MM      MM      -28  12/18
AVG. MAXIMUM     32.5              29.8     2.7     29.1
AVG. MINIMUM     13.4              12.0     1.4     10.9
MEAN             22.9              20.9     2.0     20.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     12              16.9    -4.9       15
DAYS MIN <= 32     29              30.4    -1.4       31
DAYS MIN <= 0       7               5.6     1.4        8

PRECIPITATION (INCHES)
RECORD
 MAXIMUM           MM   MM
 MINIMUM           MM   MM
TOTALS           0.62              0.45    0.17     1.11
DAILY AVG.       0.02              0.01    0.01     0.04
DAYS >= .01         5                MM      MM        6
DAYS >= .10         2                MM      MM        2
DAYS >= .50         0                MM      MM        1
DAYS >= 1.00        0                MM      MM        0
GREATEST
 24 HR. TOTAL    0.20   12/21 TO 12/21
                        12/04 TO 12/04

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS           10.5                MM      MM      8.1
SINCE 7/1        11.7                MM      MM     13.6
SNOWDEPTH AVG.      2                MM      MM        2
DAYS >= 1.0         4                MM      MM        3
GREATEST
 SNOW DEPTH         6   12/31                          7  12/19
                                                          12/18
 24 HR TOTAL      5.0   12/21 TO 12/21

DEGREE_DAYS
HEATING TOTAL    1294              1367     -73     1388
 SINCE 7/1       2683              2935    -252     2482
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        890               824      66     1036
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.6
HIGHEST WIND SPEED/DIRECTION    49/320    DATE  12/04
HIGHEST GUST SPEED/DIRECTION    57/320    DATE  12/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       3
LIGHT SNOW                8     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      1
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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