Climatological Report (Monthly)
Issued by NWS Denver/Boulder, CO

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CXUS55 KBOU 061255
CLMDEN

CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
654 AM MDT SUN JUL 6 2018

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

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF JUNE 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             105   06/28/2018
                        06/26/2012
                        06/25/2012
 LOW               30   06/02/1951
HIGHEST           105R  06/28       104       1       99  06/20
LOWEST             44   06/02        30      14       42  06/13
AVG. MAXIMUM     88.8              82.4     6.4     85.5
AVG. MINIMUM     56.0              52.3     3.7     53.6
MEAN             72.4              67.4     5.0     69.5
DAYS MAX >= 90     16               7.9     8.1        9
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.96   1882
 MINIMUM            T   1890
TOTALS           0.43              1.98   -1.55     0.33
DAILY AVG.       0.01              0.07   -0.06     0.01
DAYS >= .01         5               8.4    -3.4        5
DAYS >= .10         2               4.6    -2.6        2
DAYS >= .50         0               1.4    -1.4        0
DAYS >= 1.00        0               0.3    -0.3        0
GREATEST
 24 HR. TOTAL    0.25   06/17 TO 06/17

SNOWFALL (INCHES)
TOTAL             0.0               0.0
RECORD            0.4   1919

DEGREE_DAYS
HEATING TOTAL       9                62     -53       25
 SINCE 7/1       5410              6058    -648     5109
COOLING TOTAL     241               133     108      167
 SINCE 1/1        289               155     134      173

FREEZE DATES
RECORD
 EARLIEST     09/08/1962
 LATEST       06/08/2007
EARLIEST                        10/07
LATEST                          05/05
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.5
RESULTANT WIND SPEED/DIRECTION   1/129
HIGHEST WIND SPEED/DIRECTION    40/240    DATE  06/05
HIGHEST GUST SPEED/DIRECTION    57/160    DATE  06/27

SKY COVER
AVERAGE SKY COVER               0.40
NUMBER OF DAYS FAIR               11
NUMBER OF DAYS PC                 16
NUMBER OF DAYS CLOUDY              3

AVERAGE RH (PERCENT)              42

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORMS            12   MIXED PRECIP           0
HEAVY RAIN                2   RAIN                   5
LIGHT RAIN                5   FREEZING RAIN          0
LT FREEZING RAIN          0   HAIL                   0
HEAVY SNOW                0   SNOW                   0
LIGHT SNOW                0   FOG W/VIS <=1/4 MILE   1
FOG                       5   HAZE                   2

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

...JUNE 2018...BELOW AVERAGE PRECIPITATION AND 7TH WARMEST...

JUNE 2018 WAS SIMILAR TO THE PREVIOUS MONTH OF MAY. BOTH MONTHS
CONTAINED 2 WARM PERIODS WITH ONE ARRIVING AT THE BEGINNING AND
ANOTHER ONE AT THE END. A COOL AND MOIST PERIOD WAS OBSERVED IN THE
MIDDLE. BOTH MONTHS FINISHED WELL ABOVE THE MONTHLY AVERAGES FOR
TEMPERATURE AS THEY BOTH LANDED IN THE TOP 10 OF EACH RESPECTIVE
MONTH. DENVER`S WEATHER HISTORY GO BACK 147 YEARS TO 1872. FOR
PRECIPITATION JUNE ENDED THE MONTH WELL BELOW AVERAGE.

TEMPERATURES:

THE AVERAGE TEMPERATURE AT DENVER INTERNATIONAL AIRPORT FOR THE
MONTH OF WAS 72.4 DEGREES F, WHICH IS 5.0 DEGREES ABOVE THE NORMAL
OF 67.4 DEGREES. THE WARMEST JUNE ON RECORD OCCURRED ON THE LEADING
EDGE OF THE ONE OF THE HOTTEST SUMMERS IN DENVER`S HISTORY, 2012.
THE AVERAGE MONTHLY TEMPERATURE FOR JUNE 2012 WAS 75.0 DEGREES. THE
COLDEST JUNE ON RECORD WAS OCCURRED DURING THE COOL AND MOIST SPRING
AND SUMMER OF 1965 WITH A MONTHLY AVERAGE OF 60.6 DEGREES. THREE
RECORD HIGH TEMPERATURES WERE SET OR TIED IN JUNE 2018. A RECORD
HIGH OF 95 DEGREES WAS TIED ON THE 5TH, ANOTHER TIE OF 95 DEGREES ON
THE 6TH AND RECORD SMASHING RECORD OF 105 DEGREES REACHED ON THE
28TH. THE RECORD HIGH TEMPERTURE OF 105 DEGREES ON THE 28TH ALSO
TIES DENVER`S ALL TIME RECORD HIGH TEMPERTURE. IT SHARES THE 105
DEGREE MARK WITH WITH 4 OTHERS YEARS WHICH CAME IN 2 CONSECUTIVE
DAYS IN JUNE 2012, A DAY IN JULY 2005 AND ONE IN AUGUST 1878.

TEN WARMEST JUNE AVERAGE TEMPERATURES IN DENVER WEATHER HISTORY SINCE 1872:

75.0 2012
73.5 1994
73.4 1956
72.8 2006 1933
72.6 1990
72.4 2018
72.0 1952 1881
71.9 1980 1977
71.8 1988
71.3 1931 1918

TEN COLDEST JUNE AVERAGE TEMPERATURES IN DENVER WEATHER HISTORY SINCE 1872:

60.6 1967
60.9 1951
61.0 1928
61.5 1969 1904
61.7 1895
62.0 1945
62.1 2003 1915
62.2 1995
62.5 1903
62.7 1947

PRECIPITATION:

JUNE 2018 RECEIVED A SCANT 0.43 INCHES OF PRECIPITATION WHICH IS
1.55 INCHES BELOW THE MONTHLY AVERAGE OF 1.98 INCHES. THE HIGHEST
PRECIPITATION AMOUNT OF 0.25 INCHES CAME FROM AN AFTERNOON LINE OF
THUNDERSTORMS ON JUNE 17TH.

TEN WETTEST JUNE TOTALS IN DENVER WEATHER HISTORY SINCE 1872:

4.96 INCHES 1882
4.86 INCHES 2009
4.69 INCHES 1967
4.14 INCHES 1965
3.99 INCHES 2005
3.95 INCHES 2003 1949
3.83 INCHES 1970
3.59 INCHES 1963
3.55 INCHES 1923
3.54 INCHES 1904

TEN DRIEST JUNE TOTALS IN DENVER WEATHER HISTORY SINCE 1872:

   T INCHES 1890
0.08 INCHES 1916
0.09 INCHES 1980 1881
0.12 INCHES 2006 1952
0.13 INCHES 1893
0.16 INCHES 1933
0.17 INCHES 1930
0.19 INCHES 1922
0.20 INCHES 1973 1910
0.21 INCHES 1990

SNOWFALL

DENVER RECEIVED NO SNOWFALL IN JUNE 2018. NORMAL SNOWFALL IN DENVER
IS 0.0 INCHES, BASED ON THE 1981 THROUGH 2010 NCEI AVERAGES.

HIGHEST SNOW TOTALS FOR JUNE IN DENVER WEATHER HISTORY

0.4 INCHES 1919
0.3 INCHES 1951 1974
  T INCHES 1947 1937 1917

NUMEROUS YEARS HAD NO SNOWFALL IN JUNE

THERE WERE 12 DAYS IN WHICH THUNDER WAS OBSERVED AT DENVER
INTERNATIONAL AIRPORT AND 1 DAY OF DENSE FOG WITH A VISIBILITY AT
OR BELOW 1/4 MILE DURING THE MONTH. A PEAK WIND GUST OF 57 MPH WAS
RECORDED FROM THE SOUTH ON THE 27TH.

$$



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