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000
CXUS55 KBYZ 011029
CLMMLS


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
426 AM MDT SAT JUN 1 2013

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

...THE MILES CITY MT CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1937 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            92   05/13
LOWEST             21   05/01
AVG. MAXIMUM     70.8              68.6     2.2
AVG. MINIMUM     46.4              43.1     3.3
MEAN             58.6              55.9     2.7
DAYS MAX >= 90      1
DAYS MAX <= 32      0
DAYS MIN <= 32      2
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           6.69              2.18    4.51
DAYS >= .01        13
DAYS >= .10         9
DAYS >= .50         6
DAYS >= 1.00        3
GREATEST
 24 HR. TOTAL    2.25   05/29 TO 05/30

DEGREE_DAYS
HEATING TOTAL     203               303    -100
 SINCE 7/1       7088              7549    -461
COOLING TOTAL      13                19      -6
 SINCE 1/1         13                20      -7
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    38/260    DATE  05/27
HIGHEST GUST SPEED/DIRECTION    47/140    DATE  05/23

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       8
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      1
HAZE                      3

-  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.

...MAY 2013 MONTH IN REVIEW FOR MILES CITY...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR MAY 2013. 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   2013 VALUES  NORMALS    DEPARTURE  RANKING

MAY          6.69     2.18       +4.51      3RD WETTEST OUT OF 77 YEARS
                                            (RECORD WETTEST WAS 9.36 IN 2011)
                                            (WETTEST SINCE 9.36 IN 2011)

...MILES CITY MAY 2013 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

1.32 ON MAY 18 (OLD RECORD 0.51 IN 2011)
1.22 ON MAY 29 (OLD RECORD 0.63 IN 1974)
1.85 ON MAY 30 (OLD RECORD 0.98 IN 1978)

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   2013 VALUES  NORMALS   DEPARTURE  RANKING

MAY          58.6      55.9      +2.7      21ST WARMEST OUT OF 77 YEARS
                                           (RECORD WARMEST WAS 64.8 IN 1958)
                                           (WARMEST SINCE 58.7 IN 2000)

...MILES CITY AVERAGE HIGH TEMPERATURES...

 MONTH   2013 VALUES  NORMALS   DEPARTURE  RANKING

MAY          70.8      68.6      +2.2      26TH WARMEST OUT OF 77 YEARS
                                           (RECORD WARMEST WAS 80.3 IN 1958)
                                           (WARMEST SINCE 71.1 IN 2006)

...MILES CITY MAY 2013 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...MILES CITY MAY 2013 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...MILES CITY AVERAGE LOW TEMPERATURES...

 MONTH   2013 VALUES  NORMALS   DEPARTURE  RANKING

MAY          46.4      43.1      +3.3      TIED FOR THE 15TH WARMEST OUT OF 77 YEARS
                                           (RECORD WARMEST WAS 49.2 IN 1958)
                                           (WARMEST SINCE 48.5 IN 1994)

...MILES CITY MAY 2013 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

NONE

...MILES CITY MAY 2013 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

21 ON MAY  1 (OLD RECORD 24 IN 1954)

$$