Climatological Report (Monthly)
Issued by NWS

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000
CXUS55 KBYZ 011142
CLMLVM


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
539 AM MDT THU JUN 1 2017

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

...THE LIVINGSTON MT CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            83   05/05
LOWEST             23   05/19
AVG. MAXIMUM     67.3              64.6     2.7
AVG. MINIMUM     35.2              36.6    -1.4
MEAN             51.3              50.6     0.7
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      8
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           3.23              2.66    0.57
DAYS >= .01        11
DAYS >= .10         4
DAYS >= .50         1
DAYS >= 1.00        1
GREATEST
 24 HR. TOTAL    2.40   05/17 TO 05/17

DEGREE_DAYS
HEATING TOTAL     417               448     -31
 SINCE 7/1       6990              7396    -406
COOLING TOTAL       0                 1      -1
 SINCE 1/1          0                 1      -1
.................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
HIGHEST WIND SPEED/DIRECTION    41/260    DATE  05/12
HIGHEST GUST SPEED/DIRECTION    53/220    DATE  05/12

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               11     FREEZING RAIN              1
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW                1     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      2
HAZE                      0

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

&&

...MAY 2017 MONTH IN REVIEW FOR LIVINGSTON...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR LIVINGSTON FOR MAY 2017. 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   2017 VALUES  NORMALS    DEPARTURE  RANKING

MAY          3.19     2.66       +0.53      21ST WETTEST OUT OF 69 YEARS
                                            (RECORD WETTEST WAS 6.48 IN 1981)
                                            (WETTEST SINCE 4.08 IN 2015)

... MAY 2017 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

2.40 ON MAY 17 (OLD RECORD 0.87 IN 1978)

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

... AVERAGE TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

MAY          51.3      50.6      +0.7      TIED FOR THE 33RD COLDEST OUT OF 69 YEARS
                                           (RECORD COLDEST WAS 46.3 IN 1959)
                                           (COLDEST SINCE 51.3 IN 2016)

... AVERAGE HIGH TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

MAY          67.3      64.6      +2.7      TIED FOR THE 16TH WARMEST OUT OF 69 YEARS
                                           (RECORD WARMEST WAS 74.9 IN 1958)
                                           (WARMEST SINCE 68.5 IN 2009)

... MAY 2017 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

... MAY 2017 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

... AVERAGE LOW TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

MAY          35.2      36.6      -1.4      9TH COLDEST OUT OF 69 YEARS
                                           (RECORD COLDEST WAS 33.2 IN 2002)
                                           (COLDEST SINCE 34.7 IN 2012)

... MAY 2017 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

NONE

... MAY 2017 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

28 ON MAY 26 (OLD RECORD 29 IN 2005)

$$




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