Climatological Report (Annual)
Issued by NWS Billings, MT

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000
CXUS55 KBYZ 011224
CLAMLS


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
443 AM MST MON JAN 1 2018

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

...THE MILES CITY MT CLIMATE SUMMARY FOR THE YEAR OF 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1937 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH             111   06/26/2012
 LOW              -38   12/24/1983
HIGHEST           105   07/14
LOWEST            -27   12/31
AVG. MAXIMUM     59.6              58.5     1.1
AVG. MINIMUM     35.2              33.6     1.6
MEAN             47.4              46.1     1.3
DAYS MAX >= 90     54                      18.2
DAYS MAX <= 32     58                       7.4
DAYS MIN <= 32    154                     -15.2
DAYS MIN <= 0      24                      -0.4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        20.28   1978
 MINIMUM         5.27   1988
TOTALS           6.33             12.44   -6.11
DAYS >= .01        72                     -11.6
DAYS >= .10        18                     -14.0
DAYS >= .50         1                      -5.0
DAYS >= 1.00        1                      -0.3

DEGREE_DAYS
HEATING TOTAL    7289              7639    -350
COOLING TOTAL     985               731     254

FREEZE DATES
RECORD
 EARLIEST     09/02/1974
 LATEST       06/08/1950
EARLIEST        10/03           09/29
LATEST          04/29           05/09
.................................................

WIND (MPH)
AVERAGE WIND SPEED              9.8
RESULTANT WIND SPEED/DIRECTION   1/299
HIGHEST WIND SPEED/DIRECTION    55/300    DATE  07/10
HIGHEST GUST SPEED/DIRECTION    72/300    DATE  07/10


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             23     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                      17
LIGHT RAIN               86     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                5     SNOW                       6
LIGHT SNOW               54     SLEET                      0
FOG                      68     FOG W/VIS <= 1/4 MILE     18
HAZE                     47

-  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.

...2017 YEAR IN REVIEW FOR MILES CITY...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR 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 AND TEMPERATURES USE A PERIOD OF RECORD
THAT STARTED IN FEBRUARY 1937 AT THE MILES CITY AIRPORT. ANNUAL RANKINGS
FOR PRECIPITATION AND TEMPERATURES USE A PERIOD OF RECORD
THAT STARTED IN 1938.

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

...MILES CITY MONTHLY PRECIPITATION...

 MONTH   2017 VALUES  NORMALS    DEPARTURE  RANKING

JANUARY      0.07     0.32       -0.25      TIED FOR THE 8TH DRIEST OUT OF 80 YEARS
                                            (RECORD DRIEST WAS 0.01 IN 2008)
                                            (DRIEST SINCE 0.01 IN 2008)

FEBRUARY     0.39     0.23       +0.16      TIED FOR THE 26TH WETTEST OUT OF 81 YEARS
                                            (RECORD WETTEST WAS 1.30 IN 1959)
                                            (WETTEST SINCE 0.47 IN 2016)

MARCH        0.57     0.60       -0.03      40TH WETTEST OUT OF 81 YEARS
                                            (RECORD WETTEST WAS 1.83 IN 1950)
                                            (WETTEST SINCE 1.31 IN 2014)

APRIL        0.98     1.37       -0.39      36TH DRIEST OUT OF 81 YEARS
                                            (RECORD DRIEST WAS 0.02 IN 1983)
                                            (DRIEST SINCE 0.45 IN 2015)

MAY          0.43     2.18       -1.75      3RD DRIEST OUT OF 81 YEARS
                                            (RECORD DRIEST WAS 0.24 IN 1958)
                                            (DRIEST SINCE 0.28 IN 1980)

JUNE         0.74     2.51       -1.77      5TH DRIEST OUT OF 81 YEARS
                                            (RECORD DRIEST WAS 0.36 IN 2012)
                                            (DRIEST SINCE 0.69 IN 2016)

JULY            T     1.64       -1.64      TIED FOR THE RECORD DRIEST OUT OF 81 YEARS
                                            (OLD RECORD DRIEST WAS T IN 1988)

AUGUST       0.15     0.91       -0.76      7TH DRIEST OUT OF 81 YEARS
                                            (RECORD DRIEST WAS T IN 1967)
                                            (DRIEST SINCE 0.08 IN 2006)

SEPTEMBER    1.81     1.08       +0.73      16TH WETTEST OUT OF 81 YEARS
                                            (RECORD WETTEST WAS 4.67 IN 1941)
                                            (WETTEST SINCE 2.80 IN 2016)

OCTOBER      0.72     0.92       -0.20      40TH WETTEST OUT OF 81 YEARS
                                            (RECORD WETTEST WAS 6.31 IN 1971)
                                            (WETTEST SINCE 0.97 IN 2016)

NOVEMBER     0.25     0.39       -0.14      TIED FOR THE 29TH DRIEST OUT OF 81 YEARS
                                            (RECORD DRIEST WAS T TIED IN 2016)
                                            (DRIEST SINCE T IN 2016)

DECEMBER     0.22     0.29       -0.07      TIED FOR THE 28TH DRIEST OUT OF 80 YEARS
                                            (RECORD DRIEST WAS 0.02 TIED IN 2015)
                                            (DRIEST SINCE 0.12 IN 2016)

YEAR         6.33    12.44       -6.11      3RD DRIEST OUT OF 80 YEARS
                                            (RECORD DRIEST WAS 5.27 IN 1988)
                                            (DRIEST SINCE 6.16 IN 2012)

...MILES CITY 2017 TOP 3 DAILY MAXIMUM PRECIPITATION...

1 - 1.17   SEPTEMBER 15
2 - 0.49   OCTOBER  1
3 - 0.31   JUNE  9

ALL TIME DAILY PRECIPITATION RECORD...2.91 ON APRIL 24 2016

...MILES CITY 2017 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

0.26 ON FEBRUARY 21 (OLD RECORD 0.11 IN 1960)

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   2017 VALUES  NORMALS   DEPARTURE  RANKING

JANUARY      12.2      19.5      -7.3      24TH COLDEST OUT OF 80 YEARS
                                           (RECORD COLDEST WAS -4.5 IN 1950)
                                           (COLDEST SINCE 11.9 IN 1997)

FEBRUARY     28.1      24.4      +3.7      22ND WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 37.5 IN 2016)
                                           (WARMEST SINCE 37.5 IN 2016)

MARCH        38.9      34.7      +4.2      17TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 47.1 IN 2012)
                                           (WARMEST SINCE 42.6 IN 2016)

APRIL        48.2      46.0      +2.2      TIED FOR THE 21ST WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 53.3 TIED IN 1987)
                                           (WARMEST SINCE 48.9 IN 2016)

MAY          57.6      55.9      +1.7      34TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 64.8 IN 1958)
                                           (WARMEST SINCE 57.8 IN 2016)

JUNE         68.6      65.6      +3.0      TIED FOR THE 16TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 78.9 IN 1988)
                                           (WARMEST SINCE 71.1 IN 2016)

JULY         81.1      73.9      +7.2      3RD WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 81.5 IN 2007)
                                           (WARMEST SINCE 81.2 IN 2012)

AUGUST       72.0      72.6      -0.6      TIED FOR THE 30TH COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 65.8 IN 1977)
                                           (COLDEST SINCE 71.4 IN 2014)

SEPTEMBER    60.3      60.1      +0.2      40TH COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 48.0 IN 1965)
                                           (COLDEST SINCE 60.1 IN 2014)

OCTOBER      46.4      46.5      -0.1      21ST COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 39.3 IN 2002)
                                           (COLDEST SINCE 45.4 IN 2013)

NOVEMBER     33.3      32.0      +1.3      TIED FOR THE 37TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 42.9 IN 1949)
                                           (WARMEST SINCE 42.4 IN 2016)

DECEMBER     22.1      20.3      +1.8      TIED FOR THE 36TH COLDEST OUT OF 80 YEARS
                                           (RECORD COLDEST WAS 0.9 IN 1983)
                                           (COLDEST SINCE 13.9 IN 2016)

YEAR         47.4      46.1      +1.3      TIED FOR THE 20TH WARMEST OUT OF 80 YEARS
                                           (RECORD WARMEST WAS 50.1 IN 2012)
                                           (WARMEST SINCE 49.7 IN 2016)

...MILES CITY AVERAGE HIGH TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

JANUARY      20.6      30.0      -9.4      18TH COLDEST OUT OF 80 YEARS
                                           (RECORD COLDEST WAS 5.2 IN 1950)
                                           (COLDEST SINCE 19.5 IN 1996)

FEBRUARY     36.3      35.5      +0.8      35TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 51.4 IN 1992)
                                           (WARMEST SINCE 49.4 IN 2016)

MARCH        49.1      46.5      +2.6      TIED FOR THE 24TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 62.3 IN 2012)
                                           (WARMEST SINCE 56.1 IN 2016)

APRIL        59.6      58.8      +0.8      33RD WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 68.5 IN 1987)
                                           (WARMEST SINCE 60.8 IN 2016)

MAY          72.0      68.6      +3.4      22ND WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 80.3 IN 1958)
                                           (WARMEST SINCE 72.4 IN 2001)

JUNE         83.9      78.6      +5.3      10TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 93.4 IN 1988)
                                           (WARMEST SINCE 85.9 IN 2016)

JULY         96.7      88.3      +8.4      TIED FOR THE RECORD WARMEST OUT OF 81 YEARS
                                           (OLD RECORD WARMEST WAS 96.7 IN 2007)

AUGUST       87.3      87.2      +0.1      TIED FOR THE 37TH COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 78.5 IN 1977)
                                           (COLDEST SINCE 83.5 IN 2014)

SEPTEMBER    73.1      74.2      -1.1      32ND COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 58.6 IN 1965)
                                           (COLDEST SINCE 73.0 IN 2016)

OCTOBER      60.7      59.2      +1.5      TIED FOR THE 35TH COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 49.7 IN 1969)
                                           (COLDEST SINCE 60.6 IN 2016)

NOVEMBER     43.7      43.2      +0.5      TIED FOR THE 36TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 55.6 TIED IN 1999)
                                           (WARMEST SINCE 55.0 IN 2016)

DECEMBER     32.0      30.9      +1.1      39TH COLDEST OUT OF 80 YEARS
                                           (RECORD COLDEST WAS 9.2 IN 1983)
                                           (COLDEST SINCE 23.4 IN 2016)

YEAR         59.6      58.5      +1.1      TIED FOR THE 22ND WARMEST OUT OF 80 YEARS
                                           (RECORD WARMEST WAS 63.3 IN 2012)
                                           (WARMEST SINCE 62.2 IN 2016)

...MILES CITY 2017 TOP 3 WARMEST DAILY HIGH TEMPERATURES...

1 - 105   JULY 14
2 - 104   JULY 20
3 - 104   JULY  5

ALL TIME RECORD WARMEST DAILY HIGH TEMPERATURE...111 ON JUNE 26 2012

...MILES CITY 2017 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

78 ON MARCH 18 (OLD RECORD 70 IN 1972)
79 ON APRIL 13 (OLD RECORD 78 IN 1942)
79 ON OCTOBER 25 (OLD RECORD 78 IN 1955)
68 ON NOVEMBER 22 (TIED RECORD IN 1954)
73 ON NOVEMBER 23 (OLD RECORD 62 IN 1957)
60 ON DECEMBER 12 (OLD RECORD 55 IN 1953)

...MILES CITY 2017 TOP 3 COLDEST DAILY HIGH TEMPERATURES...

1 - -8   DECEMBER 30
2 - -7   DECEMBER 31
3 - -2   JANUARY  3

ALL TIME RECORD COLDEST DAILY HIGH TEMPERATURE...-25 ON DECEMBER 24 1983

...MILES CITY 2017 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

40 ON OCTOBER  3 (OLD RECORD 44 IN 1994)
-7 ON DECEMBER 31 (OLD RECORD -6 IN 1951)

...MILES CITY AVERAGE LOW TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

JANUARY       3.8      8.9      -5.1      29TH COLDEST OUT OF 80 YEARS
                                           (RECORD COLDEST WAS -14.1 IN 1950)
                                           (COLDEST SINCE 3.6 IN 2008)

FEBRUARY     19.9      13.2      +6.7      14TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 26.9 IN 1998)
                                           (WARMEST SINCE 25.6 IN 2016)

MARCH        28.7      22.8      +5.9      TIED FOR THE 5TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 32.4 IN 1986)
                                           (WARMEST SINCE 29.0 IN 2016)

APRIL        36.7      33.2      +3.5      18TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 39.3 IN 1980)
                                           (WARMEST SINCE 37.0 IN 2016)

MAY          43.1      43.1       0.0      TIED FOR THE 29TH COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 38.7 IN 1950)
                                           (COLDEST SINCE 42.4 IN 2015)

JUNE         53.3      52.6      +0.7      ON THE MEDIAN OUT OF 81 YEARS
                                           (WARMEST 64.4-1988/COLDEST 47.3-1951)

JULY         65.5      59.5      +6.0      3RD WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 66.3 IN 2007)
                                           (WARMEST SINCE 66.1 IN 2012)

AUGUST       56.7      58.0      -1.3      24TH COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 52.8 IN 1950)
                                           (COLDEST SINCE 56.6 IN 2009)

SEPTEMBER    47.4      46.1      +1.3      TIED FOR THE 33RD WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 54.5 IN 1998)
                                           (WARMEST SINCE 50.7 IN 2016)

OCTOBER      32.1      33.8      -1.7      10TH COLDEST OUT OF 81 YEARS
                                           (RECORD COLDEST WAS 27.8 IN 2002)
                                           (COLDEST SINCE 31.2 IN 2006)

NOVEMBER     22.8      20.9      +1.9      35TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 30.2 IN 1949)
                                           (WARMEST SINCE 29.7 IN 2016)

DECEMBER     12.1      9.7      +2.4      34TH COLDEST OUT OF 80 YEARS
                                           (RECORD COLDEST WAS -7.5 IN 1983)
                                           (COLDEST SINCE 4.3 IN 2016)

YEAR         35.2      33.6      +1.6      TIED FOR THE 21ST WARMEST OUT OF 80 YEARS
                                           (RECORD WARMEST WAS 37.2 TIED IN 2016)
                                           (WARMEST SINCE 37.2 IN 2016)

...MILES CITY 2017 TOP 3 WARMEST DAILY LOW TEMPERATURES...

1 - 77   JULY 16
2 - 73   JULY 10
3 - 72   JULY 20

ALL TIME RECORD WARMEST DAILY LOW TEMPERATURE...79 ON JULY 24 2007

...MILES CITY 2017 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

38 ON FEBRUARY 21 (OLD RECORD 37 IN 1995)
42 ON MARCH 19 (OLD RECORD 39 IN 1972)
44 ON MARCH 30 (OLD RECORD 43 IN 2010)
43 ON APRIL  2 (OLD RECORD 40 IN 1961)
60 ON MAY  6 (OLD RECORD 56 IN 1970)
62 ON JUNE  1 (OLD RECORD 61 IN 1940)
77 ON JULY 16 (OLD RECORD 74 IN 1960)
41 ON NOVEMBER 23 (OLD RECORD 34 IN 1988)
32 ON DECEMBER 13 (TIED RECORD IN 2014)

...MILES CITY 2017 TOP 3 COLDEST DAILY LOW TEMPERATURES...

1 - -27   DECEMBER 31
2 - -20   JANUARY  3
3 - -17   JANUARY  4

ALL TIME RECORD COLDEST DAILY LOW TEMPERATURE...-38 ON DECEMBER 24 1983

...MILES CITY 2017 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

43 ON JUNE 24 (OLD RECORD 44 IN 2003)
25 ON OCTOBER  4 (OLD RECORD 27 IN 1952)
2 ON NOVEMBER  6 (OLD RECORD 5 IN 1959)

$$






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