Climatological Report (Monthly)
Issued by NWS

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CXUS55 KBYZ 011044
CLMLVM


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
441 AM MDT FRI MAY 1 2015

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

...THE LIVINGSTON MT CLIMATE SUMMARY FOR THE MONTH OF APRIL 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            79   04/29
LOWEST             18   04/07
AVG. MAXIMUM     57.6              55.0     2.6
AVG. MINIMUM     30.4              29.1     1.3
MEAN             44.0              42.1     1.9
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     22
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           1.23              1.77   -0.54
DAYS >= .01        13
DAYS >= .10         5
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.35   04/24 TO 04/25

DEGREE_DAYS
HEATING TOTAL     622               689     -67
 SINCE 7/1       5842              6948   -1106
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.0
HIGHEST WIND SPEED/DIRECTION    47/260    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    55/290    DATE  04/29

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW               10     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

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

&&

...APRIL 2015 MONTH IN REVIEW FOR LIVINGSTON...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR LIVINGSTON FOR APRIL 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

APRIL        1.23     1.77       -0.54      24TH DRIEST OUT OF 67 YEARS
                                            (RECORD DRIEST WAS 0.23 IN 1980)
                                            (DRIEST SINCE 0.45 IN 2013)

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

NONE

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

APRIL        44.0      42.1      +1.9      24TH WARMEST OUT OF 67 YEARS
                                           (RECORD WARMEST WAS 51.7 IN 1987)
                                           (WARMEST SINCE 44.6 IN 2014)

... AVERAGE HIGH TEMPERATURES...

 MONTH   2015 VALUES  NORMALS   DEPARTURE  RANKING

APRIL        57.6      55.0      +2.6      TIED FOR THE 20TH WARMEST OUT OF 67 YEARS
                                           (RECORD WARMEST WAS 69.0 IN 1987)
                                           (WARMEST SINCE 57.6 IN 2014)

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

NONE

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

NONE

... AVERAGE LOW TEMPERATURES...

 MONTH   2015 VALUES  NORMALS   DEPARTURE  RANKING

APRIL        30.4      29.1      +1.3      TIED FOR THE 31ST COLDEST OUT OF 67 YEARS
                                           (RECORD COLDEST WAS 25.4 IN 1975)
                                           (COLDEST SINCE 26.8 IN 2013)

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

NONE

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

NONE

$$




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