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000
CXUS55 KBOU 011901
CLMDEN

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
1201 PM MDT SAT DEC 1 2012

............NOVEMBER 2012...ABOVE NORMAL TEMPERATURE............
....................BELOW NORMAL PRECIPITATION....................

NOVEMBER 2012 WAS A QUIET MONTH WITH ABOVE NORMAL TEMPERATURES AND
VERY LITTLE PRECIPITATION. UPPER LEVEL HIGH PRESSURE BROUGHT MILD
AND DRY WEATHER TO THE FRONT RANGE EARLY IN THE MONTH...WITH EIGHT
OUT OF THE FIRST NINE DAYS BEING ABOVE NORMAL. HIGH TEMPERATURES ON
THE 1ST AND THE 7TH REACHED OR EXCEEDED 70 DEGREES...WITH
TEMPERATURES OF 70 AND 77 DEGREES RESPECTIVELY. COLDER UNSETTLED
WEATHER RETURNED TO THE REGION ON THE TENTH...AS AN UPPER LEVEL
TROUGH OF LOW PRESSURE MOVED INTO COLORADO FROM THE WEST. THIS
SYSTEM BROUGHT THE FIRST SNOWFALL OF THE SEASON TO THE COLORADO
FRONT RANGE...WITH 1.7 INCHES FALLING AT DENVER INTERNATIONAL
AIRPORT ON THE 10TH. NOVEMBER 11TH WAS THE COLDEST DAY OF THE MONTH
WITH A HIGH OF ONLY 34 DEGREES AND A MORNING LOW OF 13. THE 0.27
INCHES OF PRECIPITATION WHICH FELL ON THE 10TH WAS THE ONLY
MEASURABLE PRECIPITATION FOR THE MONTH. WARMER AND DRIER WEATHER
RETURNED TO THE AREA ON THE 16TH...AND CONTINUED THROUGH THE
25TH...AS UPPER LEVEL HIGH PRESSURE ALONG WITH A DRY SOUTHWESTERLY
FLOW ALOFT DOMINATED THE ROCKY MOUNTAIN REGION. AN UPPER LEVEL
DISTURBANCE AND ASSOCIATED COLD FRONT BROUGHT COLDER TEMPERATURES TO
NORTHEASTERN COLORADO ON THE 26TH. HOWEVER...TEMPERATURES REBOUNDED
TO ABOVE NORMAL VALUES BY THE 27TH AS UPPER LEVEL HIGH PRESSURE ONCE
AGAIN BUILT OVER THE ROCKY MOUNTAIN REGION.

TEMPERATURES:

THE AVERAGE TEMPERATURE FOR THE MONTH OF OCTOBER WAS 43.5 DEGREES
WHICH WAS 5.2 DEGREES ABOVE NORMAL. DESPITE BEING MUCH ABOVE
NORMAL...NOVEMBER 2012 FAILED TO MAKE IT INTO THE TOP TEN LIST OF
WARMEST NOVEMBERS. NOVEMBER OF 1949 IS THE WARMEST NOVEMBER ON RECORD
WITH AN AVERAGE TEMPERATURE OF 50.9 DEGREES. THE COLDEST NOVEMBER ON
RECORD (22.0 DEGREES F) OCCURRED WAY BACK IN 1880 WHEN RUTHERFORD B.
HAYES WAS PRESIDENT.

THERE WERE NO DAYS IN WHICH THE MAXIMUM TEMPERATURE EXCEEDED 90
DEGREES. THE HIGHEST TEMPERATURE OF THE MONTH WAS 77 DEGREES WHICH
OCCURRED ON THE 7TH. THE COOLEST TEMPERATURE OF THE MONTH WAS 13
DEGREES ON THE MORNING OF THE 11TH.

PRECIPITATION.

PRECIPITATION FOR THE MONTH OF NOVEMBER WAS 0.27 INCHES...WHICH IS
0.34 INCHES BELOW THE NORMAL 0F 0.61 INCHES. THE WETTEST OCTOBER ON
RECORD OCCURRED BACK IN 1946 WHEN 3.21 INCHES OF PRECIPITATION WAS
RECORDED. ONLY A TRACE OF PRECIPITATION WAS RECORDED IN OCTOBER
1934...1901 AND 1949 WHICH ARE THE DRIEST OCTOBERS ON RECORD.

1.7 INCHES OF SNOW WAS RECORDED DURING THE MONTH...WHICH IS 7.0
INCHES BELOW THE NORMAL OF 8.7 INCHES. THE SNOWIEST OCTOBER ON
RECORD OCCURRED BACK IN 1946 WHEN 42.6 INCHES OF SNOW FELL. THE
LEAST SNOWIEST NOVEMBER ON RECORD WAS BACK IN 1949 WHEN NO SNOW FELL.

THERE WERE NO THUNDERSTORMS OBSERVED AT DENVER INTERNATIONAL
AIRPORT. THERE WAS ONLY ONE DAY WITH DENSE FOG WITH A VISIBILITY AT
OR BELOW 1/4 MILE DURING THE MONTH. A PEAK WIND OF 37 MPH FROM A
NORTHWEST DIRECTION WAS RECORDED ON THE 22ND.
....................................................................................

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              80   11/08/2006
 LOW              -18   11/29/1877
HIGHEST            77   11/07        67      10       69  11/24
LOWEST             13   11/11        -3      16       10  11/02
                                                          11/03
AVG. MAXIMUM     58.4              52.1     6.3     54.1
AVG. MINIMUM     28.5              24.5     4.0     24.8
MEAN             43.5              38.3     5.2     39.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               2.3    -2.3        1
DAYS MIN <= 32     19              23.4    -4.4       26
DAYS MIN <= 0       0               0.6    -0.6        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.21   1946
 MINIMUM            T   1899
                        1901
                        1949
TOTALS           0.27              0.61   -0.34     0.47
DAILY AVG.       0.01              0.02   -0.01     0.02
DAYS >= .01         1               4.7    -3.7        2
DAYS >= .10         1               1.6    -0.6        2
DAYS >= .50         0               0.0     0.0        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.27   11/10 TO 11/10           11/01 TO 11/02

SNOWFALL (INCHES)
RECORDS
 TOTAL           42.6  1946
TOTALS            1.7               8.7

DEGREE_DAYS
HEATING TOTAL     638               801    -163      757
 SINCE 7/1       1195              1382    -187     1252
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1236               769     467      964

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

WIND (MPH)
AVERAGE WIND SPEED              8.4
RESULTANT WIND SPEED/DIRECTION   4/205
HIGHEST WIND SPEED/DIRECTION    29/220    DATE  11/09
HIGHEST GUST SPEED/DIRECTION    37/220    DATE  11/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             24
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     44

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

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

$$