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

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000
CXUS53 KFSD 011918
CLMHON

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

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

...THE HURON CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              71   12/06/1939
 LOW              -34   12/25/1884
HIGHEST            54   12/18        MM      MM       44  12/05
LOWEST            -31   12/31        MM      MM      -31  12/18
AVG. MAXIMUM     31.2              29.0     2.2     26.2
AVG. MINIMUM     10.5               9.5     1.0      6.6
MEAN             20.8              19.2     1.6     16.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     14              17.0    -3.0       18
DAYS MIN <= 32     30              30.6    -0.6       31
DAYS MIN <= 0      10               7.2     2.8       10

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.15   1931
 MINIMUM            T   1986
                        1943
TOTALS           0.50              0.52   -0.02     1.39
DAILY AVG.       0.02              0.02    0.00     0.04
DAYS >= .01         6               5.8     0.2        7
DAYS >= .10         1               1.6    -0.6        4
DAYS >= .50         0               0.1    -0.1        1
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.22   12/29 TO 12/29

SNOWFALL (INCHES)
RECORDS
 TOTAL           26.0   2009
                        1968
TOTALS            6.9               8.0    -1.1     10.0
SINCE 7/1         8.2              16.3    -8.1     14.7
SNOWDEPTH AVG.      1                 4      -3        2
DAYS >= 1.0         2               2.2    -0.2        2
GREATEST
 SNOW DEPTH         4   12/31                          6  12/20
                        12/30                             12/19
                                                          12/18
 24 HR TOTAL      3.9   12/29 TO 12/29

DEGREE_DAYS
HEATING TOTAL    1363              1418     -55     1499
 SINCE 7/1       2928              3120    -192     2707
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        730               742     -12      887
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.1
HIGHEST WIND SPEED/DIRECTION    44/320    DATE  12/04
HIGHEST GUST SPEED/DIRECTION    53/320    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)     73

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          1     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                9     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      2
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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