Climatological Report (Monthly)
Issued by NWS Billings, MT

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000
CXUS55 KBYZ 011239
CLMMLS


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
537 AM MST SUN JAN 1 2017

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

...THE MILES CITY MT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1937 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            47   12/03
LOWEST            -27   12/17
AVG. MAXIMUM     23.4              30.9    -7.5
AVG. MINIMUM      4.3               9.7    -5.4
MEAN             13.8              20.3    -6.5
DAYS MAX >= 90      0
DAYS MAX <= 32     21
DAYS MIN <= 32     31
DAYS MIN <= 0      11

PRECIPITATION (INCHES)
TOTALS           0.12              0.29   -0.17
DAYS >= .01         5
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.06   12/12 TO 12/12

DEGREE_DAYS
HEATING TOTAL    1579              1385     194
 SINCE 7/1       2894              3184    -290
COOLING TOTAL       0                 0       0
 SINCE 1/1        873               730     143
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.1
HIGHEST WIND SPEED/DIRECTION    33/260    DATE  12/19
HIGHEST GUST SPEED/DIRECTION    41/320    DATE  12/05

AVERAGE RH (PERCENT)     68

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                2     SNOW                       4
LIGHT SNOW               10     SLEET                      0
FOG                       4     FOG W/VIS <= 1/4 MILE      0
HAZE                      7

-  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 2016 MONTH IN REVIEW FOR MILES CITY...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR DECEMBER 2016. 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   2016 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER     0.12     0.29       -0.17      20TH DRIEST OUT OF 79 YEARS
                                            (RECORD DRIEST WAS 0.02 TIED IN 2015)
                                            (DRIEST SINCE 0.02 IN 2015)

...MILES CITY DECEMBER 2016 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   2016 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     13.9      20.3      -6.4      TIED FOR THE 13TH COLDEST OUT OF 79 YEARS
                                           (RECORD COLDEST WAS 0.9 IN 1983)
                                           (COLDEST SINCE 12.9 IN 2013)

...MILES CITY AVERAGE HIGH TEMPERATURES...

 MONTH   2016 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     23.4      30.9      -7.5      14TH COLDEST OUT OF 79 YEARS
                                           (RECORD COLDEST WAS 9.2 IN 1983)
                                           (COLDEST SINCE 19.9 IN 2009)

...MILES CITY DECEMBER 2016 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...MILES CITY DECEMBER 2016 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

-9 ON DECEMBER 17 (TIED RECORD IN 1964)

...MILES CITY AVERAGE LOW TEMPERATURES...

 MONTH   2016 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER      4.3      9.7      -5.4      15TH COLDEST OUT OF 79 YEARS
                                           (RECORD COLDEST WAS -7.5 IN 1983)
                                           (COLDEST SINCE 1.9 IN 2013)

...MILES CITY DECEMBER 2016 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

NONE

...MILES CITY DECEMBER 2016 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

$$





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