Climatological Report (Monthly)
Issued by NWS Billings, MT

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756
CXUS55 KBYZ 011201
CLMMLS


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
552 AM MDT TUE MAY 1 2018

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

...THE MILES CITY MT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1937 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            79   04/28
LOWEST              6   04/03
AVG. MAXIMUM     52.6              58.8    -6.2
AVG. MINIMUM     29.5              33.2    -3.7
MEAN             41.1              46.0    -4.9
DAYS MAX >= 90      0
DAYS MAX <= 32      4
DAYS MIN <= 32     17
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           3.09              1.37    1.72
DAYS >= .01        10
DAYS >= .10         5
DAYS >= .50         3
DAYS >= 1.00        1
GREATEST
 24 HR. TOTAL    1.04   04/12 TO 04/12

DEGREE_DAYS
HEATING TOTAL     710               571     139
 SINCE 7/1       8162              7246     916
COOLING TOTAL       0                 1      -1
 SINCE 1/1          0                 1      -1
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.3
HIGHEST WIND SPEED/DIRECTION    35/290    DATE  04/29
HIGHEST GUST SPEED/DIRECTION    44/290    DATE  04/29

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                2     SNOW                       4
LIGHT SNOW               12     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      3
HAZE                      0

-  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.

...APRIL 2018 MONTH IN REVIEW FOR MILES CITY...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR APRIL 2018. 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 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   2018 VALUES  NORMALS    DEPARTURE  RANKING

APRIL        3.09     1.37       +1.72      5TH WETTEST OUT OF 82 YEARS
                                            (RECORD WETTEST WAS 4.36 IN 2016)
                                            (WETTEST SINCE 4.36 IN 2016)

...MILES CITY APRIL 2018 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

1.04 ON APRIL 12 (OLD RECORD 0.61 IN 1991)

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   2018 VALUES  NORMALS   DEPARTURE  RANKING

APRIL        41.1      46.0      -4.9      TIED FOR THE 9TH COLDEST OUT OF 82 YEARS
                                           (RECORD COLDEST WAS 38.8 IN 1975)
                                           (COLDEST SINCE 40.9 IN 2013)

...MILES CITY AVERAGE HIGH TEMPERATURES...

 MONTH   2018 VALUES  NORMALS   DEPARTURE  RANKING

APRIL        52.6      58.8      -6.2      TIED FOR THE 8TH COLDEST OUT OF 82 YEARS
                                           (RECORD COLDEST WAS 48.2 IN 1975)
                                           (COLDEST SINCE 52.4 IN 1997)

...MILES CITY APRIL 2018 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...MILES CITY APRIL 2018 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

25 ON APRIL  6 (TIED RECORD IN 1997)

...MILES CITY AVERAGE LOW TEMPERATURES...

 MONTH   2018 VALUES  NORMALS   DEPARTURE  RANKING

APRIL        29.5      33.2      -3.7      TIED FOR THE 11TH COLDEST OUT OF 82 YEARS
                                           (RECORD COLDEST WAS 27.0 IN 1951)
                                           (COLDEST SINCE 29.0 IN 2013)

...MILES CITY APRIL 2018 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

NONE

...MILES CITY APRIL 2018 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

6 ON APRIL  3 (OLD RECORD 7 IN 2002)
9 ON APRIL  6 (OLD RECORD 14 IN 1997)

$$





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