Climatological Report (Monthly)
Issued by NWS

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117
CXUS55 KBYZ 011538
CLMLVM

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

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

...THE LIVINGSTON MT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            45   12/20
LOWEST            -27   12/17
AVG. MAXIMUM     27.2              35.5    -8.3
AVG. MINIMUM     10.3              16.7    -6.4
MEAN             18.8              26.1    -7.3
DAYS MAX >= 90      0
DAYS MAX <= 32     18
DAYS MIN <= 32     31
DAYS MIN <= 0       6

PRECIPITATION (INCHES)
TOTALS           0.36              0.52   -0.16
DAYS >= .01         6
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.12   12/09 TO 12/10
                        12/10 TO 12/10
                        12/10 TO 12/11

DEGREE_DAYS
HEATING TOTAL    1429              1206     223
 SINCE 7/1       2927              3165    -238
COOLING TOTAL       0                 0       0
 SINCE 1/1        330               230     100
.................................................

WIND (MPH)
AVERAGE WIND SPEED              17.8
HIGHEST WIND SPEED/DIRECTION    62/220    DATE  12/27
HIGHEST GUST SPEED/DIRECTION    83/210    DATE  12/19

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                3     SNOW                       8
LIGHT SNOW               19     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      3
HAZE                     13

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

&&

...DECEMBER 2016 MONTH IN REVIEW FOR LIVINGSTON...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR LIVINGSTON 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 JULY 1948 AT OR NEAR THE LIVINGSTON AIRPORT.

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

... MONTHLY PRECIPITATION...

 MONTH   2016 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER     0.36     0.52       -0.16      TIED FOR THE 28TH DRIEST OUT OF 69 YEARS
                                            (RECORD DRIEST WAS T IN 2009)
                                            (DRIEST SINCE T IN 2009)

... DECEMBER 2016 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

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

... AVERAGE TEMPERATURES...

 MONTH   2016 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     18.8      26.1      -7.3      4TH COLDEST OUT OF 69 YEARS
                                           (RECORD COLDEST WAS 12.2 IN 1983)
                                           (COLDEST SINCE 18.4 IN 2009)

... AVERAGE HIGH TEMPERATURES...

 MONTH   2016 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     27.2      35.5      -8.3      3RD COLDEST OUT OF 69 YEARS
                                           (RECORD COLDEST WAS 21.4 IN 1983)
                                           (COLDEST SINCE 21.4 IN 1983)

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

NONE

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

NONE

... AVERAGE LOW TEMPERATURES...

 MONTH   2016 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     10.3      16.7      -6.4      5TH COLDEST OUT OF 69 YEARS
                                           (RECORD COLDEST WAS 2.9 IN 1983)
                                           (COLDEST SINCE 8.7 IN 2009)

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

NONE

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

-27 ON DECEMBER 17 (OLD RECORD -22 IN 1964)

$$



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