000
CXUS55 KBYZ 011017
CLMMLS


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
413 AM MDT FRI JUN 1 2012

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

...THE MILES CITY MT CLIMATE SUMMARY FOR THE MONTH OF MAY 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1937 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            91   05/16
LOWEST             30   05/11
AVG. MAXIMUM     70.5              68.6     1.9
AVG. MINIMUM     42.2              43.1    -0.9
MEAN             56.4              55.9     0.5
DAYS MAX >= 90      1
DAYS MAX <= 32      0
DAYS MIN <= 32      3
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           1.01              2.18   -1.17
DAYS >= .01        10
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.48   05/26 TO 05/27

DEGREE_DAYS
HEATING TOTAL     288               303     -15
 SINCE 7/1       6201              7549   -1348
COOLING TOTAL      27                19       8
 SINCE 1/1         45                20      25
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.6
HIGHEST WIND SPEED/DIRECTION    43/290    DATE  05/06
HIGHEST GUST SPEED/DIRECTION    55/290    DATE  05/06

AVERAGE RH (PERCENT)     53

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               13     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      0
HAZE                      2

-  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 2012 MONTH IN REVIEW FOR MILES CITY...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR MAY 2012. 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   2012 VALUES  NORMALS    DEPARTURE  RANKING

MAY          1.01     2.18       -1.17      11TH DRIEST OUT OF 76 YEARS
                                            (RECORD DRIEST WAS 0.24 IN 1958)
                                            (DRIEST SINCE 0.81 IN 1998)

...MILES CITY MAY 2012 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

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   2012 VALUES  NORMALS   DEPARTURE  RANKING

MAY          56.4      55.9      +0.5      TIED FOR THE 34TH COLDEST OUT OF 76 YEARS
                                           (RECORD COLDEST WAS 50.9 IN 1953)
                                           (COLDEST SINCE 51.6 IN 2011)

...MILES CITY AVERAGE HIGH TEMPERATURES...

 MONTH   2012 VALUES  NORMALS   DEPARTURE  RANKING

MAY          70.5      68.6      +1.9      TIED FOR THE 26TH WARMEST OUT OF 76 YEARS
                                           (RECORD WARMEST WAS 80.3 IN 1958)
                                           (WARMEST SINCE 71.1 IN 2006)

...MILES CITY MAY 2012 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

88 ON MAY 14 (TIED RECORD IN 1987)
91 ON MAY 16 (OLD RECORD 89 IN 1964)

...MILES CITY MAY 2012 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

47 ON MAY 26 (OLD RECORD 48 IN 1965)

...MILES CITY AVERAGE LOW TEMPERATURES...

 MONTH   2012 VALUES  NORMALS   DEPARTURE  RANKING

MAY          42.2      43.1      -0.9      18TH COLDEST OUT OF 76 YEARS
                                           (RECORD COLDEST WAS 38.7 IN 1950)
                                           (COLDEST SINCE 41.5 IN 2005)

...MILES CITY MAY 2012 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

57 ON MAY 16 (TIED RECORD IN 1949)
61 ON MAY 17 (OLD RECORD 60 IN 1972)

...MILES CITY MAY 2012 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

32 ON MAY 25 (TIED RECORD IN 2004)

$$