Climatological Report (Monthly)
Issued by NWS Billings, MT

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000
CXUS55 KBYZ 011044
CLMBIL


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

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

...THE BILLINGS MT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1934 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            82   04/29
LOWEST             26   04/03
AVG. MAXIMUM     59.9              57.6     2.3
AVG. MINIMUM     35.5              34.7     0.8
MEAN             47.7              46.2     1.5
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      8
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           1.57              1.66   -0.09
DAYS >= .01         6
DAYS >= .10         3
DAYS >= .50         1
DAYS >= 1.00        1
GREATEST
 24 HR. TOTAL    1.11   04/15 TO 04/15
                        04/14 TO 04/15
                        04/15 TO 04/15

SNOWFALL (INCHES)
TOTALS            5.9               8.3    -2.4
SINCE 7/1        55.4              53.0     2.4
SNOWDEPTH AVG.      0
DAYS >= TRACE       5
DAYS >= 1.0         1
GREATEST
 SNOW DEPTH         1   04/15
 24 HR TOTAL      5.9   04/15

DEGREE_DAYS
HEATING TOTAL     510               567     -57
 SINCE 7/1       5707              6377    -670
COOLING TOTAL       0                 1      -1
 SINCE 1/1          0                 1      -1
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    48/310    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    58/310    DATE  04/14

AVERAGE RH (PERCENT)     51

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       3
LIGHT SNOW                2     SLEET                      1
FOG                       7     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.

&&

...APRIL 2015 MONTH IN REVIEW FOR BILLINGS...

BELOW IS A SUMMARY OF THE TEMPERATURE...PRECIPITATION...AND WIND
STATISTICS FOR BILLINGS 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 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   2015 VALUES  NORMALS    DEPARTURE  RANKING

APRIL        1.57     1.66       -0.09      35TH WETTEST OUT OF 81 YEARS
                                            (RECORD WETTEST WAS 4.42 IN 1955)
                                            (WETTEST SINCE 1.82 IN 2011)

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

1.11 ON APRIL 15 (OLD RECORD 0.94 IN 1940)

...BILLINGS MONTHLY SNOWFALL...

 MONTH   2015 VALUES  NORMALS    DEPARTURE  RANKING

APRIL         5.9       8.3       -2.4      MEDIAN OUT OF 81 YEARS
                                            (SNOWIEST 42.3-1955/LEAST SNOWIEST 0.0-1949)

...BILLINGS APRIL 2015 BROKEN OR TIED DAILY SNOWFALL RECORDS...

NONE

...BILLINGS AVERAGE TEMPERATURES...

 MONTH   2015 VALUES  NORMALS   DEPARTURE  RANKING

APRIL        47.7      46.2      +1.5      TIED FOR THE 23RD WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 54.6 IN 1980)
                                           (WARMEST SINCE 50.4 IN 2012)

...BILLINGS AVERAGE HIGH TEMPERATURES...

 MONTH   2015 VALUES  NORMALS   DEPARTURE  RANKING

APRIL        59.9      57.6      +2.3      23RD WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 69.0 IN 1987)
                                           (WARMEST SINCE 62.4 IN 2012)

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

80 ON APRIL 14 (TIED RECORD IN 1985)

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

NONE

...BILLINGS AVERAGE LOW TEMPERATURES...

 MONTH   2015 VALUES  NORMALS   DEPARTURE  RANKING

APRIL        35.5      34.7      +0.8      25TH WARMEST OUT OF 81 YEARS
                                           (RECORD WARMEST WAS 40.8 IN 1980)
                                           (WARMEST SINCE 38.3 IN 2012)

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

NONE

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

NONE

...BILLINGS MONTHLY WIND AVERAGES...

 MONTH   2015 VALUES  NORMALS    DEPARTURE  RANKING

APRIL        10.2      10.5       -0.3      TIED FOR THE 14TH LEAST WINDIEST OUT OF 66 YEARS
                                            (RECORD LEAST WINDIEST WAS 8.8 IN 1983)
                                            (LEAST WINDIEST SINCE 10.2 IN 2012)

$$




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