Climatological Report (Monthly)
Issued by NWS Billings, MT

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850
CXUS55 KBYZ 011001
CLMBIL


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
359 AM MDT WED NOV 1 2017

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

...THE BILLINGS MT CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1934 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            79   10/25
                        10/19
LOWEST             23   10/30
AVG. MAXIMUM     60.6              59.4     1.2
AVG. MINIMUM     36.6              37.1    -0.5
MEAN             48.6              48.2     0.4
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     11
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           0.49              1.18   -0.69
DAYS >= .01         5
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.18   10/07 TO 10/07

SNOWFALL (INCHES)
TOTALS              T               4.1    -4.1
SINCE 7/1           T               5.2    -5.2
SNOWDEPTH AVG.      0
DAYS >= TRACE       3
DAYS >= 1.0         0
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL        T   10/29 TO 10/29
                        10/26 TO 10/26
                        10/03 TO 10/03

DEGREE_DAYS
HEATING TOTAL     498               523     -25
 SINCE 7/1        736               752     -16
COOLING TOTAL       1                 3      -2
 SINCE 1/1        840               636     204
.................................................

WIND (MPH)
AVERAGE WIND SPEED              12.9
HIGHEST WIND SPEED/DIRECTION    44/290    DATE  10/20
HIGHEST GUST SPEED/DIRECTION    59/300    DATE  10/20

AVERAGE RH (PERCENT)     50

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                3     SLEET                      0
FOG                       3     FOG W/VIS <= 1/4 MILE      0
HAZE                      1

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

&&

...OCTOBER 2017 MONTH IN REVIEW FOR BILLINGS...

BELOW IS A SUMMARY OF THE TEMPERATURE...PRECIPITATION...AND WIND
STATISTICS FOR BILLINGS FOR OCTOBER 2017. 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 AUGUST 1934 AT THE BILLINGS AIRPORT. MONTHLY RANKINGS
FOR WIND USE A PERIOD OF RECORD THAT STARTED IN 1984.

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

...BILLINGS MONTHLY PRECIPITATION...

 MONTH   2017 VALUES  NORMALS    DEPARTURE  RANKING

OCTOBER      0.49     1.18       -0.69      17TH DRIEST OUT OF 84 YEARS
                                            (RECORD DRIEST WAS 0.01 IN 1987)
                                            (DRIEST SINCE 0.16 IN 2014)

...BILLINGS OCTOBER 2017 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

...BILLINGS MONTHLY SNOWFALL...

 MONTH   2017 VALUES  NORMALS    DEPARTURE  RANKING

OCTOBER         T       4.1       -4.1      TIED FOR THE 8TH LEAST SNOWIEST OUT OF 84 YEARS
                                            (RECORD LEAST SNOWIEST WAS 0.0 TIED IN 2015)
                                            (LEAST SNOWIEST SINCE 0.0 IN 2015)

...BILLINGS OCTOBER 2017 BROKEN OR TIED DAILY SNOWFALL RECORDS...

NONE

...BILLINGS AVERAGE TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

OCTOBER      48.6      48.2      +0.4      32ND COLDEST OUT OF 84 YEARS
                                           (RECORD COLDEST WAS 40.0 IN 1969)
                                           (COLDEST SINCE 44.7 IN 2013)

...BILLINGS AVERAGE HIGH TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

OCTOBER      60.6      59.4      +1.2      38TH COLDEST OUT OF 84 YEARS
                                           (RECORD COLDEST WAS 48.3 IN 1969)
                                           (COLDEST SINCE 54.0 IN 2013)

...BILLINGS OCTOBER 2017 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

79 ON OCTOBER 25 (OLD RECORD 78 IN 1977)

...BILLINGS OCTOBER 2017 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...BILLINGS AVERAGE LOW TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

OCTOBER      36.6      37.1      -0.5      29TH COLDEST OUT OF 84 YEARS
                                           (RECORD COLDEST WAS 30.7 IN 1984)
                                           (COLDEST SINCE 35.3 IN 2013)

...BILLINGS OCTOBER 2017 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

NONE

...BILLINGS OCTOBER 2017 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

...BILLINGS MONTHLY WIND AVERAGES...

 MONTH   2017 VALUES  NORMALS    DEPARTURE  RANKING

OCTOBER      12.9      10.4       +2.5      2ND WINDIEST OUT OF 69 YEARS
                                            (RECORD WINDIEST WAS 13.7 IN 1961)
                                            (WINDIEST SINCE 13.7 IN 1961)

$$




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