Climatological Report (Monthly)
Issued by NWS

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CXUS55 KBYZ 011112
CLMLVM


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
509 AM MDT MON JUN 1 2015

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

...THE LIVINGSTON MT CLIMATE SUMMARY FOR THE MONTH OF MAY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            83   05/31
LOWEST             20   05/10
AVG. MAXIMUM     61.0              64.6    -3.6
AVG. MINIMUM     39.8              36.6     3.2
MEAN             50.4              50.6    -0.2
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      4
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           4.08              2.66    1.42
DAYS >= .01        19
DAYS >= .10         9
DAYS >= .50         3
DAYS >= 1.00        1
GREATEST
 24 HR. TOTAL    1.42   05/15 TO 05/16

DEGREE_DAYS
HEATING TOTAL     445               448      -3
 SINCE 7/1       6287              7396   -1109
COOLING TOTAL       1                 1       0
 SINCE 1/1          1                 1       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.3
HIGHEST WIND SPEED/DIRECTION    40/210    DATE  05/31
HIGHEST GUST SPEED/DIRECTION    50/210    DATE  05/31

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       9
LIGHT RAIN               20     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                1     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

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

&&

...MAY 2015 MONTH IN REVIEW FOR LIVINGSTON...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR LIVINGSTON FOR MAY 2015. 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 JULY 1948 AT OR NEAR THE LIVINGSTON AIRPORT.

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

... MONTHLY PRECIPITATION...

 MONTH   2015 VALUES  NORMALS    DEPARTURE  RANKING

MAY          4.08     2.66       +1.42      10TH WETTEST OUT OF 67 YEARS
                                            (RECORD WETTEST WAS 6.48 IN 1981)
                                            (WETTEST SINCE 5.19 IN 2011)

... MAY 2015 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

1.32 ON MAY 16 (OLD RECORD 0.74 IN 1977)

NOTE: SINCE THE LATE 1990S...LIVINGSTON BECAME AN AUTOMATED AND UNATTENDED
WEATHER STATION. PRECIPITATION AMOUNTS IN THE WINTER MAY BE UNDERESTIMATED.

... AVERAGE TEMPERATURES...

 MONTH   2015 VALUES  NORMALS   DEPARTURE  RANKING

MAY          50.4      50.6      -0.2      TIED FOR THE 22ND COLDEST OUT OF 67 YEARS
                                           (RECORD COLDEST WAS 46.3 IN 1959)
                                           (COLDEST SINCE 49.9 IN 2012)

... AVERAGE HIGH TEMPERATURES...

 MONTH   2015 VALUES  NORMALS   DEPARTURE  RANKING

MAY          61.0      64.6      -3.6      14TH COLDEST OUT OF 67 YEARS
                                           (RECORD COLDEST WAS 57.7 IN 1975)
                                           (COLDEST SINCE 58.9 IN 2011)

... MAY 2015 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

... MAY 2015 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

... AVERAGE LOW TEMPERATURES...

 MONTH   2015 VALUES  NORMALS   DEPARTURE  RANKING

MAY          39.8      36.6      +3.2      TIED FOR THE 19TH WARMEST OUT OF 67 YEARS
                                           (RECORD WARMEST WAS 45.1 IN 1958)
                                           (WARMEST SINCE 40.3 IN 2013)

... MAY 2015 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

NONE

... MAY 2015 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

20 ON MAY 10 (OLD RECORD 26 IN 1967)

$$




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