Climatological Report (Monthly)
Issued by NWS Rapid City, SD

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CXUS53 KUNR 011615
CLMRAP


CLIMATE REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
915 AM MST MON JAN 1 2018

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

...THE RAPID CITY AIRPORT SD CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1942 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              75   12/04/1965
 LOW              -30   12/30/1990
HIGHEST            64   12/10                         49  12/04
LOWEST            -21   12/31                        -23  12/17
                        12/30
AVG. MAXIMUM     36.4              36.9    -0.5     27.8
AVG. MINIMUM     10.8              13.0    -2.2      5.3
MEAN             23.6              24.9    -1.3     16.6
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32     12                                 17
DAYS MIN <= 32     28                                 31
DAYS MIN <= 0      10                                 10

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.65   1975
 MINIMUM            T   2001
TOTALS           0.27              0.42   -0.15     0.77
DAILY AVG.       0.01              0.01    0.00     0.02
DAYS >= .01         9                                  6
DAYS >= .10         1                                  2
DAYS >= .50         0                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.11   12/30 TO 12/30              0.35

SNOWFALL (INCHES)
RECORDS
 TOTAL           17.9   1975
TOTALS            8.0               5.4     2.6     11.3
SINCE 7/1         8.0              13.2    -5.2     14.1
SNOWDEPTH AVG.      1                 2      -1        2
DAYS >= 1.0         3               2.2     0.8        3
GREATEST
 SNOW DEPTH         4   12/31                          6  12/29
                                                          12/28
                                                          12/27
 24 HR TOTAL      2.1   12/30 TO 12/30               5.0

DEGREE_DAYS
HEATING TOTAL    1276              1241      35     1494
 SINCE 7/1       2827              2916     -89     2717
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        709               636      73      646
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              13.3
HIGHEST WIND SPEED/DIRECTION    51/310    DATE  12/05
HIGHEST GUST SPEED/DIRECTION    67/330    DATE  12/08

AVERAGE RH (PERCENT)     62

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       4
LIGHT SNOW               16     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                      6

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

$$


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