Climatological Report (Monthly)
Issued by NWS Billings, MT

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CXUS55 KBYZ 011141
CLMBIL


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
537 AM MDT SAT OCT 1 2016

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

...THE BILLINGS MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1934 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            94   09/02
                        09/01
LOWEST             40   09/14
AVG. MAXIMUM     71.7              73.1    -1.4
AVG. MINIMUM     50.6              47.5     3.1
MEAN             61.2              60.3     0.9
DAYS MAX >= 90      2
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           1.58              1.30    0.28
DAYS >= .01        12
DAYS >= .10         6
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.64   09/11 TO 09/12

SNOWFALL (INCHES)
TOTALS            0.0               1.1    -1.1
SINCE 7/1         0.0               1.1    -1.1
SNOWDEPTH AVG.      0
DAYS >= TRACE       0
DAYS >= 1.0         0
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.0   09/30 TO 09/30

DEGREE_DAYS
HEATING TOTAL     161               192     -31
 SINCE 7/1        189               229     -40
COOLING TOTAL      52                51       1
 SINCE 1/1        736               633     103
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.3
HIGHEST WIND SPEED/DIRECTION    38/320    DATE  09/24
HIGHEST GUST SPEED/DIRECTION    47/330    DATE  09/24

AVERAGE RH (PERCENT)     57

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      3
HAZE                      1

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

&&

...SEPTEMBER 2016 MONTH IN REVIEW FOR BILLINGS...

BELOW IS A SUMMARY OF THE TEMPERATURE...PRECIPITATION...AND WIND
STATISTICS FOR BILLINGS FOR SEPTEMBER 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 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   2016 VALUES  NORMALS    DEPARTURE  RANKING

SEPTEMBER    1.58     1.30       +0.28      26TH WETTEST OUT OF 83 YEARS
                                            (RECORD WETTEST WAS 4.99 IN 1941)
                                            (WETTEST SINCE 3.63 IN 2013)

...BILLINGS SEPTEMBER 2016 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

...BILLINGS MONTHLY SNOWFALL...

 MONTH   2016 VALUES  NORMALS    DEPARTURE  RANKING

SEPTEMBER     0.0*      1.1       -1.1      TIED FOR THE RECORD LEAST SNOWIEST OUT OF 83 YEARS
                                            (OLD RECORD LEAST SNOWIEST WAS 0.0 TIED IN 2015)

...BILLINGS SEPTEMBER 2016 BROKEN OR TIED DAILY SNOWFALL RECORDS...

NONE

...BILLINGS AVERAGE TEMPERATURES...

 MONTH   2016 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    61.2      60.3      +0.9      TIED FOR THE 34TH WARMEST OUT OF 83 YEARS
                                           (RECORD WARMEST WAS 67.2 IN 1938)
                                           (WARMEST SINCE 65.4 IN 2015)

...BILLINGS AVERAGE HIGH TEMPERATURES...

 MONTH   2016 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    71.7      73.1      -1.4      TIED FOR THE 29TH COLDEST OUT OF 83 YEARS
                                           (RECORD COLDEST WAS 55.9 IN 1965)
                                           (COLDEST SINCE 70.8 IN 2008)

...BILLINGS SEPTEMBER 2016 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...BILLINGS SEPTEMBER 2016 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...BILLINGS AVERAGE LOW TEMPERATURES...

 MONTH   2016 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    50.6      47.5      +3.1      TIED FOR THE 13TH WARMEST OUT OF 83 YEARS
                                           (RECORD WARMEST WAS 53.8 IN 1940)
                                           (WARMEST SINCE 51.0 IN 2015)

...BILLINGS SEPTEMBER 2016 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

61 ON SEPTEMBER 30 (OLD RECORD 59 IN 2005)

...BILLINGS SEPTEMBER 2016 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

...BILLINGS MONTHLY WIND AVERAGES...

 MONTH   2016 VALUES  NORMALS    DEPARTURE  RANKING

SEPTEMBER    10.3       9.5       +0.8      TIED FOR THE 26TH WINDIEST OUT OF 67 YEARS
                                            (RECORD WINDIEST WAS 11.6 IN 1970)
                                            (WINDIEST SINCE 10.5 IN 2003)

$$





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