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

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CXUS55 KBOU 012105
CLMDEN

CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
305 PM MDT WED AUG 1 2018

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

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF JULY 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   07/20/2005
 LOW               42   07/04/1903
                        07/31/1873
HIGHEST            99   07/03        99       0      100  07/19
                                                          07/06
LOWEST             47   07/01        51      -4       51  07/01
AVG. MAXIMUM     90.2              89.4     0.8     91.5
AVG. MINIMUM     60.3              58.9     1.4     61.3
MEAN             75.3              74.2     1.1     76.4
DAYS MAX >= 90     19              16.0     3.0       20
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         6.41   1965
 MINIMUM         0.01   1901
TOTALS           1.03              2.16   -1.13     0.47
DAILY AVG.       0.03              0.07   -0.04     0.02
DAYS >= .01         8               8.3    -0.3        6
DAYS >= .10         3               4.3    -1.3        3
DAYS >= .50         0               1.4    -1.4        0
DAYS >= 1.00        0               0.7    -0.7        0
GREATEST
 24 HR. TOTAL    0.43   07/23 TO 07/23

SNOWFALL (INCHES)
 TOTAL            0.0               0.0
RECORDS
 TOTAL            0.0

DEGREE_DAYS
HEATING TOTAL       0                 6      -6        0
 SINCE 7/1          0                 6      -6        0
COOLING TOTAL     326               289      37      360
 SINCE 1/1        615               444     171      533

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

WIND (MPH)
AVERAGE WIND SPEED              10.1
RESULTANT WIND SPEED/DIRECTION   2/138
HIGHEST WIND SPEED/DIRECTION    47/140    DATE  07/02
HIGHEST GUST SPEED/DIRECTION    64/150    DATE  07/02

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             20
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     50

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORMS            13   MIXED PRECIP           0
HEAVY RAIN                3   RAIN                   5
LIGHT RAIN               11   FREEZING RAIN          0
LT FREEZING RAIN          0   HAIL                   0
HEAVY SNOW                0   SNOW                   0
LIGHT SNOW                0   FOG W/VIS <=1/4 MILE   3
FOG                       8   HAZE                   5

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

...JULY 2018...A VERY WARM START WITH A MUCH COOLER FINISH...

JULY 2018 IN DENVER STARTED THE MONTH WITH ABOVE NORMAL TEMPERATURES
AND DRY CONDITIONS. THIS PATTERN OF ABOVE NORMAL HEAT PERSISTED FOR
THE FIRST 3 WEEKS FOLLOWED BY A COOLING TREND OVER THE FINAL WEEK
WHICH WAS COMBINED WITH WIDESPREAD MONSOONAL PRECIPITATION. THIS
WIDESPREAD PRECIPITATION WAS NOT JUST FOR DENVER BUT MUCH OF
NORTHERN, NORTHEAST AND EASTERN PLAINS OF COLORADO. PRECIPITATION
FOR THE MONTH FINISHED BELOW AVARAGE WITH THE MAJORITY LANDING IN
THE FINAL 7 TO 10 DAYS. DENVER`S WEATHER HISTORY RECORDS GO BACK 146
YEARS TO 1872.

TEMPERATURES:

THE AVERAGE TEMPERATURE AT DENVER INTERNATIONAL AIRPORT FOR THE
MONTH OF JULY WAS 75.3 DEGREES F, WHICH IS 1.1 DEGREES ABOVE THE
NORMAL OF 74.2 DEGREES. THE WARMEST JULY ON RECORD OCCURRED , WHICH
OCCURRED IN MIDST OF THE HOTTEST SUMMER IN DENVER`S HISTORY, WHICH
WAS 2012. THE AVERAGE MONTHLY TEMPERATURE FOR JULY 2012 WAS A VERY
WARM 78.9 DEGREES AND IS ALSO DENVER`S OVERALL WARMEST MONTH IN ITS
147 YEAR HISTORY. THE COLDEST JULY ON RECORD WAS OCCURRED IN 1895
WITH A MONTHLY AVERAGE OF 67.3 DEGREES. DESPITE PERSISTENT ABOVE
AVERAGE WARMTH, NO RECORD HIGH TEMPERATURES WERE SET OR TIED.
DENVER`S WARMEST JULY TEMPERATURE IS 105 DEGREES AND WAS SET ON THE
20TH DAY OF 2005. FOR 2018, THE WARMEST DAY WAS THE 3RD WITH 99
DEGREES.

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

78.9 2012
77.8 1934
77.7 2005
77.6 2008
77.3 1936
77.1 1939
76.9 2003 1966
76.7 2001 2000 1954

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

67.3 1895
68.2 1906
68.7 1915 1904
68.9 1950 1905 1891
69.0 1875
69.1 1967 1872

PRECIPITATION:

JULY 2018 RECEIVED 1.03 INCHES OF PRECIPITATION WHICH IS 1.13 INCHES
BELOW THE MONTHLY AVERAGE OF 2.16 INCHES. THE HIGHEST PRECIPITATION
AMOUNT OF 0.43 INCHES CAME FROM AN UNSETTLED AFTERNOON OF SHOWERS
AND THUNDERSTORMS ON JULY 23TH.

TEN WETTEST JULY TOTALS IN DENVER WEATHER HISTORY SINCE 1872:

6.41 INCHES 1965
5.92 INCHES 1998
5.60 INCHES 1997
5.24 INCHES 1919
4.76 INCHES 2001
4.28 INCHES 1895
4.17 INCHES 1956 1909 1875
4.11 INCHES 1991

TEN DRIEST JULY TOTALS IN DENVER WEATHER HISTORY SINCE 1872:

0.01 INCHES 1901
0.08 INCHES 1939
0.24 INCHES 2008
0.27 INCHES 2005
0.31 INCHES 1917
0.32 INCHES 1934
0.33 INCHES 1924 1877
0.34 INCHES 1891
0.41 INCHES 1888

SNOWFALL

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

HIGHEST SNOW TOTALS FOR JULY IN DENVER WEATHER HISTORY

ALL YEARS: NO SNOWFALL IN JULY

TEN LOWEST SNOW TOTALS FOR JULY IN DENVER WEATHER HISTORY

ALL YEARS: NO SNOWFALL IN JULY

THERE WERE 13 DAYS IN WHICH THUNDER WAS OBSERVED AT DENVER
INTERNATIONAL AIRPORT AND 3 DAYS OF DENSE FOG WITH A VISIBILITY AT
OR BELOW 1/4 MILE DURING THE MONTH. A PEAK WIND GUST OF 64 MPH WAS
RECORDED FROM THE SOUTHEAST ON THE 2ND.

$$


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