000
CXUS55 KBYZ 011048
CLMMLS


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
344 AM MST TUE JAN 1 2013

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

...THE MILES CITY MT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1937 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            61   12/01
LOWEST             -9   12/25
AVG. MAXIMUM     31.9              30.9     1.0
AVG. MINIMUM     13.2               9.7     3.5
MEAN             22.6              20.3     2.3
DAYS MAX >= 90      0
DAYS MAX <= 32     12
DAYS MIN <= 32     29
DAYS MIN <= 0       7

PRECIPITATION (INCHES)
TOTALS           0.20              0.29   -0.09
DAYS >= .01         5
DAYS >= .10         1
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.12   12/12 TO 12/12

DEGREE_DAYS
HEATING TOTAL    1309              1385     -76
 SINCE 7/1       2910              3184    -274
COOLING TOTAL       0                 0       0
 SINCE 1/1       1107               730     377
.................................................

WIND (MPH)
AVERAGE WIND SPEED              7.8
HIGHEST WIND SPEED/DIRECTION    35/280    DATE  12/03
HIGHEST GUST SPEED/DIRECTION    44/280    DATE  12/03

AVERAGE RH (PERCENT)     73

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                0     SNOW                       1
LIGHT SNOW               11     SLEET                      0
FOG                      16     FOG W/VIS <= 1/4 MILE      4
HAZE                      6

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

&&

THIS IS AN AUTOMATED...UNATTENDED WEATHER STATION AND MAY
UNDERESTIMATE WINTER PRECIPITATION.

...DECEMBER 2012 MONTH IN REVIEW FOR MILES CITY...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR DECEMBER 2012. ALL TEMPERATURES ARE IN
DEGREES FAHRENHEIT AND ALL PRECIPITATION AMOUNTS ARE IN INCHES. NORMALS
ARE 30 YEAR AVERAGES CALCULATED FROM 1981 TO 2010. MONTHLY RANKINGS
FOR PRECIPITATION...SNOWFALL...AND TEMPERATURES USE A PERIOD OF RECORD
THAT STARTED IN FEBRUARY 1937 AT THE MILES CITY AIRPORT.

NUMBERS DENOTED WITH AN * IS MISSING DATA IN THE CALCULATION.

...MILES CITY MONTHLY PRECIPITATION...

 MONTH   2012 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER     0.20     0.29       -0.09      TIED FOR THE 22ND DRIEST OUT OF 75 YEARS
                                            (RECORD DRIEST WAS 0.02 TIED IN 2001)
                                            (DRIEST SINCE 0.07 IN 2010)

...MILES CITY DECEMBER 2012 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

NOTE: SINCE THE LATE 1990S...MILES CITY BECAME AN AUTOMATED AND UNATTENDED
WEATHER STATION. PRECIPITATION AMOUNTS IN THE WINTER MAY BE UNDERESTIMATED.

...MILES CITY AVERAGE TEMPERATURES...

 MONTH   2012 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     22.6      20.3      +2.3      TIED FOR THE 35TH COLDEST OUT OF 75 YEARS
                                           (RECORD COLDEST WAS 0.9 IN 1983)
                                           (COLDEST SINCE 15.8 IN 2010)

...MILES CITY AVERAGE HIGH TEMPERATURES...

 MONTH   2012 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     31.9      30.9      +1.0      TIED FOR THE 35TH COLDEST OUT OF 75 YEARS
                                           (RECORD COLDEST WAS 9.2 IN 1983)
                                           (COLDEST SINCE 24.0 IN 2010)

...MILES CITY DECEMBER 2012 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...MILES CITY DECEMBER 2012 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...MILES CITY AVERAGE LOW TEMPERATURES...

 MONTH   2012 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     13.2      9.7      +3.5      37TH COLDEST OUT OF 75 YEARS
                                           (RECORD COLDEST WAS -7.5 IN 1983)
                                           (COLDEST SINCE 7.5 IN 2010)

...MILES CITY DECEMBER 2012 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

35 ON DECEMBER  3 (TIED RECORD IN 2004)
32 ON DECEMBER  5 (TIED RECORD IN 1939)

...MILES CITY DECEMBER 2012 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

$$