National Weather Service Text Product Display

Climatological Report (Monthly)
Issued by NWS Billings, MT
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CXUS55 KBYZ 011029
CLMBIL


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

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

...THE BILLINGS MT CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1934 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            94   05/13
LOWEST             26   05/01
AVG. MAXIMUM     68.6              67.5     1.1
AVG. MINIMUM     46.2              43.6     2.6
MEAN             57.4              55.6     1.8
DAYS MAX >= 90      2
DAYS MAX <= 32      0
DAYS MIN <= 32      1
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           4.28              2.18    2.10
DAYS >= .01        15
DAYS >= .10        10
DAYS >= .50         2
DAYS >= 1.00        1
GREATEST
 24 HR. TOTAL    1.21   05/28 TO 05/29

SNOWFALL (INCHES)
TOTALS              T               2.0    -2.0
SINCE 7/1        40.4              55.0   -14.6
SNOWDEPTH AVG.      0
DAYS >= TRACE       3
DAYS >= 1.0         0
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL        T   05/27 TO 05/27

DEGREE_DAYS
HEATING TOTAL     255               309     -54
 SINCE 7/1       6347              6686    -339
COOLING TOTAL      27                16      11
 SINCE 1/1         27                17      10
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.4
HIGHEST WIND SPEED/DIRECTION    39/320    DATE  05/31
HIGHEST GUST SPEED/DIRECTION    48/320    DATE  05/31

AVERAGE RH (PERCENT)     57

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       9
LIGHT RAIN               19     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       2
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

&&

...MAY 2013 MONTH IN REVIEW FOR BILLINGS...

BELOW IS A SUMMARY OF THE TEMPERATURE...PRECIPITATION...AND WIND
STATISTICS FOR BILLINGS 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 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   2013 VALUES  NORMALS    DEPARTURE  RANKING

MAY          4.28     2.18       +2.10      7TH WETTEST OUT OF 79 YEARS
                                            (RECORD WETTEST WAS 9.54 IN 2011)
                                            (WETTEST SINCE 9.54 IN 2011)

...BILLINGS MAY 2013 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

...BILLINGS MONTHLY SNOWFALL...

 MONTH   2013 VALUES  NORMALS    DEPARTURE  RANKING

MAY             T       2.0       -2.0      TIED FOR THE 20TH LEAST SNOWIEST OUT OF 79 YEARS
                                            (RECORD LEAST SNOWIEST WAS 0.0 TIED IN 1993)
                                            (LEAST SNOWIEST SINCE T IN 2009)

...BILLINGS MAY 2013 BROKEN OR TIED DAILY SNOWFALL RECORDS...

T ON MAY 27 (TIED RECORD IN 1955)

...BILLINGS AVERAGE TEMPERATURES...

 MONTH   2013 VALUES  NORMALS   DEPARTURE  RANKING

MAY          57.4      55.6      +1.8      TIED FOR THE 18TH WARMEST OUT OF 79 YEARS
                                           (RECORD WARMEST WAS 64.7 IN 1936)
                                           (WARMEST SINCE 58.2 IN 2006)

...BILLINGS AVERAGE HIGH TEMPERATURES...

 MONTH   2013 VALUES  NORMALS   DEPARTURE  RANKING

MAY          68.6      67.5      +1.1      28TH WARMEST OUT OF 79 YEARS
                                           (RECORD WARMEST WAS 80.9 IN 1936)
                                           (WARMEST SINCE 70.6 IN 2009)

...BILLINGS MAY 2013 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

94 ON MAY 13 (OLD RECORD 92 IN 2001)

...BILLINGS MAY 2013 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...BILLINGS AVERAGE LOW TEMPERATURES...

 MONTH   2013 VALUES  NORMALS   DEPARTURE  RANKING

MAY          46.2      43.6      +2.6      12TH WARMEST OUT OF 79 YEARS
                                           (RECORD WARMEST WAS 49.7 IN 1958)
                                           (WARMEST SINCE 46.8 IN 1994)

...BILLINGS MAY 2013 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

64 ON MAY 13 (OLD RECORD 56 IN 1941)

...BILLINGS MAY 2013 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

...BILLINGS MONTHLY WIND AVERAGES...

 MONTH   2013 VALUES  NORMALS    DEPARTURE  RANKING

MAY          10.4       9.9       +0.5      TIED FOR THE 28TH LEAST WINDIEST OUT OF 64 YEARS
                                            (RECORD LEAST WINDIEST WAS 8.6 IN 1991)
                                            (LEAST WINDIEST SINCE 9.6 IN 2012)

$$
National Weather Service Weather Forecast Office
