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

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CXUS55 KBOU 011847
CLMDEN

DENCLMDEN 000
TTAA00 KBOU 010900


CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
200 AM MST THU JAN 1 2015

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

...THE DENVER CO CLIMATE SUMMARY FOR THE YEAR OF 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             105   06/26/2012
                        06/25/2012
                        07/20/2005
                        08/08/1878
 LOW              -29   01/09/1875
HIGHEST           100   07/07        64      36      100  07/11
                                                          06/11
LOWEST            -19   12/30        36     -55      -15  12/05
                        02/05
AVG. MAXIMUM     64.6              64.7    -0.1     63.9
AVG. MINIMUM     36.5              36.3     0.2     36.3
MEAN             50.5              50.5     0.0     50.1
DAYS MAX >= 90     29              39.6   -10.6       54
DAYS MAX <= 32     24              20.0     4.0       29
DAYS MIN <= 32    150             156.9    -6.9      169
DAYS MIN <= 0      14               5.8     8.2       11

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        23.31   1967
 MINIMUM         7.29   2008
TOTALS          18.77             14.30    4.47    17.60
DAILY AVG.       0.05              0.03    0.02     0.05
DAYS >= .01        98              79.7    18.3       82
DAYS >= .10        44              34.9     9.1       42
DAYS >= .50        10               7.6     2.4        8
DAYS >= 1.00        4               2.3     1.7        3
GREATEST
 24 HR. TOTAL    2.85   07/29 TO 07/30             09/13 TO 09/14

 STORM TOTAL       2.93                             4.65
 (MM/DD(HH))      07/29(00) TO 07/30(00)   09/09(00) TO 09/15(00)

SNOWFALL (INCHES)
RECORDS
 TOTAL          115.9   1913
                        0
                        0
 24 HR TOTAL     23.6   12/24/1982 TO 12/24/1982
 SNOW DEPTH        MM   MM
TOTALS           46.3              53.8    -7.5     72.1
 LIQUID EQUIV     MM                MM      MM       MM
SINCE 7/1        16.0              22.5    -6.5      8.1
 LIQUID 7/1       MM                MM      MM       MM
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE      55              33.3    21.7       60
DAYS >= 1.0        17              16.3     0.7       20
GREATEST
 SNOW DEPTH         6   12/31                          9  02/25
                        12/30
 24 HR TOTAL      5.4   12/29                    02/24 TO 02/24

 STORM TOTAL      5.9                               11.7
 (MM/DD(HH))      12/29(00) 12/30(00)        03/22(00) TO 03/24(00)

DEGREE_DAYS
HEATING TOTAL    5844              6059    -215     6302
 SINCE 7/1       2291              2468    -207     2451
COOLING TOTAL     701               769     -68      999
 SINCE 1/1        701               769     -68      999

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

WIND (MPH)
AVERAGE WIND SPEED              10.2
RESULTANT WIND SPEED/DIRECTION   2/214
HIGHEST WIND SPEED/DIRECTION    51/310    DATE  07/11
HIGHEST GUST SPEED/DIRECTION    66/340    DATE  04/29

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           72
NUMBER OF DAYS PC            226
NUMBER OF DAYS CLOUDY         67

AVERAGE RH (PERCENT)     54

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN               15     RAIN                      35
LIGHT RAIN               91     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       6
HEAVY SNOW                6     SNOW                      24
LIGHT SNOW               56     SLEET                      1
FOG                     115     FOG W/VIS <= 1/4 MILE     32
HAZE                     57

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

..............DENVER`S WEATHER SUMMARY FOR 2014..........................

2014 STARTED OUT ON THE SNOWY SIDE WITH 14.3 INCHES OF SNOW MEASURED
AT DENVER INTERNATIONAL AIRPORT...WHICH IS THE 11TH SNOWIEST JANUARY
ON RECORD. FEBRUARY WAS A COLD MONTH WITH BELOW NORMAL
PRECIPITATION. ON FEBRUARY 4TH...AN ARCTIC COLD FRONT SWEPT ACROSS
NORTHEASTERN COLORADO BRINGING BITTERLY COLD TEMPERATURES TO THE
FRONT RANGE OF COLORADO. FOUR CONSECUTIVE MORNINGS FROM THE 4TH
THROUGH THE 7TH HAD TEMPERATURES BELOW ZERO. THE TEMPERATURE
PLUMMETED TO MINUS 19 DEGREES F ON THE MORNING OF THE 5TH.

MARCH AND APRIL WERE UNEVENTFUL MONTHS WITH NORMAL TEMPERATURE AND
PRECIPITATION. THE WEATHER BECAME MORE INTERESTING IN LATE MAY AS A
DEEP UPPER LEVEL STORM SYSTEM OVER SOUTHERN NEVADA INTERACTED WITH A
COLD FRONT OVER NORTHEASTERN COLORADO. THIS SYSTEM PRODUCED SEVERE
WEATHER AND AREAS OF HEAVY RAIN ALONG THE FRONT RANGE URBAN CORRIDOR
FROM THE 20TH THROUGH THE 22ND. HAIL AND 1.20 INCHES OF AND RAIN WAS
REPORTED AT DENVER INTERNATIONAL AIRPORT ON THE 21ST.

A SERIES OF UPPER LEVEL TROUGHS MOVED ACROSS NORTH CENTRAL AND
NORTHEASTERN COLORADO DURING THE MONTH OF JUNE. THESE TROUGHS AND
ASSOCIATED COLD FRONTS BROUGHT BOUTS OF PRECIPITATION AND SEVERE
WEATHER TO THE AREA AS WELL AS KEEPING TEMPERATURES FROM GETTING TOO
HOT. SEVERE WEATHER WAS REPORTED IN THE DENVER AREA ON THE 4TH, 5TH,
6TH, 8TH, 14TH, 21ST, 23RD, 24TH, 25TH AND 26TH.

JULY HAD NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION. ON
JULY 7TH...THE HIGH TEMPERATURE AT DENVER INTERNATIONAL AIRPORT
REACHED 100 DEGREES F...WHICH WAS THE HOTTEST TEMPERATURE FOR THE
YEAR. MOST OF JULY`S PRECIPITATION FELL LATE IN THE MONTH AS UPSLOPE
FLOW BEHIND THE PASSAGE OF A COLD FRONT COMBINED WITH MONSOONAL
MOISTURE. 2.93 INCHES OF PRECIPITATION WAS MEASURED AT DENVER
INTERNATIONAL AIRPORT FROM THE 29TH THROUGH THE 30TH. THE 1.80
INCHES OF PRECIPITATION MEASURED ON THE 29TH ESTABLISHED A NEW DAILY
RAINFALL PRECIPITATION RECORD FOR THE DAY. IN ADDITION...A MUCH
COLDER AIRMASS MOVED INTO NORTHEASTERN COLORADO THE LAST COUPLE DAYS
OF THE MONTH. THE HIGH TEMPERATURE AT DIA ONLY REACHED 62 DEGREES ON
THE 30TH...WHICH WAS THE COLDEST MAXIMUM TEMPERATURE EVER RECORDED
ON THAT DAY.

DURING THE MONTH OF AUGUST...PERIODS OF MONSOONAL MOISTURE COMBINED
WITH OCCASIONAL COLD FRONTS RESULTED IN HIGHER THAN AVERAGE
PRECIPITATION AND BELOW NORMAL TEMPERATURES ACROSS THE REGION.

ABOVE NORMAL PRECIPITATION CONTINUED INTO THE MONTH OF SEPTEMBER.
THIS WAS MAINLY DUE TO A DEEP AND POWERFUL STORM SYSTEM TRACKING
FROM SOUTHERN CALIFORNIA ACROSS NEVADA...UTAH AND NORTHERN COLORADO
LATE IN THE MONTH. HEAVY RAIN AND LARGE HAIL WAS REPORTED ACROSS THE
DENVER METRO AREA ON THE 29TH...WITH 1.01 INCHES OF PRECIPITATION
MEASURED AT DENVER INTERNATIONAL AIRPORT.

UPPER LEVEL HIGH PRESSURE DOMINATED THE ROCKY MOUNTAIN REGION DURING
MUCH OF OCTOBER...WHICH RESULTED IN WARM AND DRY MONTH. A THIRTEEN
DAY STRETCH OF ABOVE NORMAL TEMPERATURES OCCURRED FROM OCTOBER 14TH
THROUGH THE 26TH. THREE DAYS DURING THIS STRETCH RECORDED
TEMPERATURES AT OR ABOVE THE 80 DEGREE MARK.

THE WEATHER IN DENVER TURNED MUCH COLDER IN NOVEMBER AS A DEEP UPPER
LEVEL STORM SYSTEM AND ASSOCIATED ARCTIC COLD FRONT MOVED INTO
COLORADO. ON THE 10TH...THE TEMPERATURE AT DENVER INTERNATIONAL
AIRPORT DROPPED FROM THE MID 60`S INTO THE TEENS WITHIN A FEW HOURS
AFTER THE FRONTAL PASSAGE. THE ARCTIC AIRMASS REMAINED ENTRENCHED
OVER THE REGION...WITH HIGH TEMPERATURES FAILING TO MAKE IT INTO THE
TEENS FROM THE 11TH THROUGH THE 13TH. THIS IS THE FIRST TIME...SINCE
RECORDS HAVE BEEN TAKEN IN 1872...THAT THERE WERE THREE CONSECUTIVE
DAYS WITH MAX TEMPERATURES BELOW 20 DEGREES F IN THE MONTH OF
NOVEMBER. IN ADDITION TO THE VERY COLD TEMPERATURES...DENVER
INTERNATIONAL AIRPORT MEASURED 2.1 INCHES OF SNOWFALL...WHICH WAS
THE FIRST MEASURABLE SNOWFALL OF THE 2014/2015 SEASON.

WEATHER WAS UNEVENTFUL FOR MUCH OF DECEMBER WITH MILD AND DRY
WEATHER THE FIRST THREE WEEKS OF THE MONTH. THE WEATHER TURNED
WETTER AND MUCH COLDER THE LAST WEEK OF THE MONTH AS A SERIES OF
STORM SYSTEMS AND ARCTIC COLD FRONTS MOVED ACROSS THE STATE. THE
FIRST SYSTEM MOVED INTO COLORADO ON CHRISTMAS DAY BRINGING MUCH
COLDER TEMPERATURES AND HEAVY SNOW TO NORTH CENTRAL AND NORTHEASTERN
COLORADO. THIS SYSTEM BROUGHT 4 TO 8 INCHES OF SNOW TO THE FRONT
RANGE URBAN CORRIDOR...WITH OVER A FOOT OF SNOW IN SOME FOOTHILL
LOCATIONS. DENVER INTERNATIONAL AIRPORT REPORTED 5.1 INCHES OF SNOW
FROM THE AFTERNOON OF THE 25TH THROUGH THE EVENING OF THE
26TH...WITH 3.4 INCHES FALLING ON CHRISTMAS DAY. THIS MAKES
CHRISTMAS OF 2014 THE THIRD SNOWIEST CHRISTMAS ON RECORD SINCE 1872.
THE ONLY TWO YEARS THAT HAD MORE SNOW ON CHRISTMAS DAY WERE 2007
WITH 7.4 INCHES AND 1894 WITH 6.4 INCHES.

BELOW NORMAL TEMPERATURES CONTINUED THE DAYS AFTER CHRISTMAS...AS A
COUPLE STORM SYSTEMS AND ASSOCIATED ARCTIC COLD FRONTS MOVED ACROSS
COLORADO. SNOW AND BITTER COLD TEMPERATURES MOVED INTO NORTHEASTERN
COLORADO ON THE 29TH...WITH 5.4 INCHES OF SNOW MEASURED AT DENVER
INTERNATIONAL AIRPORT. THE ARCTIC AIRMASS REMAINED ENTRENCHED OVER
THE AREA ON THE 30TH...WITH RECORD LOW TEMPERATURES SET AT MANY
LOCATIONS. THE HIGH TEMPERATURE AT DIA ONLY MANAGED TO REACH 1
DEGREE F WHICH IS A NEW RECORD LOW MAX FOR THE DATE. ON THE EVENING
OF THE 30TH...THE TEMPERATURE PLUMMETED TO 19 DEGREES BELOW ZERO
WHICH SET A RECORD LOW TEMPERATURE FOR THE DATE AS WELL.

$$



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