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

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CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
738 AM MDT SAT NOV 1 2014

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

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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              90   10/01/1892
 LOW               -2   10/29/1917
HIGHEST            83   10/15        83       0       79  10/08
LOWEST             29   10/27        22       7       27  10/16
                                                          10/05
AVG. MAXIMUM     69.7              65.3     4.4     60.0
AVG. MINIMUM     40.7              36.6     4.1     35.5
MEAN             55.2              50.9     4.3     47.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.4    -0.4        0
DAYS MIN <= 32      4               8.5    -4.5       12
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.17   1969
 MINIMUM            T   1934
TOTALS           0.52              1.02   -0.50     0.72
DAILY AVG.       0.02              0.03   -0.01     0.02
DAYS >= .01         5               5.3    -0.3        8
DAYS >= .10         2               2.4    -0.4        3
DAYS >= .50         0               0.5    -0.5        0
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.26   10/09 TO 10/10           10/18 TO 10/18

SNOWFALL (INCHES)
RECORDS
 TOTAL           31.2   1969
TOTALS            0.0               4.0

DEGREE_DAYS
HEATING TOTAL     296               440    -144      525
 SINCE 7/1        394               581    -187      608
COOLING TOTAL       0                 5      -5        0
 SINCE 1/1        701               769     -68      999

FREEZE DATES
RECORD
 EARLIEST     09/08/1962
 LATEST       06/08/2007
EARLIEST      10/03             10/07
LATEST                          05/05
.....................................................

WIND (MPH)
AVERAGE WIND SPEED              9.1
RESULTANT WIND SPEED/DIRECTION   3/197
HIGHEST WIND SPEED/DIRECTION    35/020    DATE  10/02
HIGHEST GUST SPEED/DIRECTION    44/010    DATE  10/02

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     49

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

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

.....OCTOBER 2014 WARMER AND DRIER THAN AVERAGE.....

OCTOBER 2014 STARTED OUT COOLER THAN NORMAL AS AN UPPER LEVEL TROUGH
OF LOW PRESSURE MOVED ACROSS THE CENTRAL AND NORTHERN ROCKY MOUNTAIN
STATES. THIS SYSTEM BROUGHT SOME LIGHT RAIN TO DENVER ON THE FIRST.
WARMER TEMPERATURES MOVED INTO NORTH CENTRAL AND NORTHEASTERN
COLORADO BY THE 5TH AS UPPER LEVEL HIGH PRESSURE BUILT OVER THE
WESTERN UNITED STATES. COOLER TEMPERATURES AND PRECIPITATION MOVED
INTO THE FRONT RANGE OF COLORADO ON THE 9TH AS A WEAK UPPER LEVEL
TROUGH AND ASSOCIATED COLD FRONT MOVED ACROSS THE REGION. UPPER
LEVEL HIGH PRESSURE REBUILT OVER THE REGION ON THE 14TH...WITH A 13
DAY STRETCH OF ABOVE NORMAL TEMPERATURES AT DENVER INTERNATIONAL
AIRPORT FROM THE 14TH THROUGH THE 26TH. THE TEMPERATURE REACHED OR
EXCEEDED THE 80 DEGREE MARK ON ON THE 15TH, 24TH AND 25TH. ANOTHER
UPPER LEVEL STORM SYSTEM AND COLD FRONT BROUGHT COOLER TEMPERATURES
TO NORTHEASTERN COLORADO ON THE 27TH AND 28TH...WITH TEMPERATURES
RETURNING TO SLIGHTLY ABOVE NORMAL VALUES THE LAST FEW DAYS OF THE
MONTH.

TEMPERATURES:

THE AVERAGE TEMPERATURE AT DENVER INTERNATIONAL AIRPORT FOR THE
MONTH OF OCTOBER WAS 55.2 DEGREES F WHICH WAS 4.3 DEGREES ABOVE
NORMAL. OCTOBER OF 1950 WAS THE WARMEST OCTOBER ON RECORD...WITH AN
AVERAGE TEMPERATURE OF 59.9 DEGREES F.  THE COLDEST OCTOBER ON
RECORD WAS 39.0 DEGREES F BACK IN 1969. THERE WERE NO DAYS IN WHICH
THE MAXIMUM TEMPERATURE EXCEEDED 90 DEGREES. THE HIGHEST TEMPERATURE
OF THE MONTH WAS 83 DEGREES WHICH OCCURRED ON THE 15TH. THE COLDEST
TEMPERATURE OF THE MONTH WAS 29 DEGREES OCCURRED ON THE MORNING OF
THE 27TH.

PRECIPITATION:

PRECIPITATION FOR THE MONTH OF OCTOBER AT DENVER INTERNATIONAL
AIRPORT WAS 0.52 INCHES...WHICH IS 0.50 INCHES BELOW THE NORMAL OF
1.02 INCHES. THERE WERE 4 DAYS WITH MEASURABLE PRECIPITATION. ON THE
9TH...0.25 INCHES OF PRECIPITATION FELL WHICH IS THE GREATEST DAILY
AMOUNT FOR THE MONTH.

TEN WETTEST OCTOBER`S IN DENVER WEATHER HISTORY SINCE 1872:

4.17 INCHES 1969
3.92 INCHES 1892
3.72 INCHES 1942
3.50 INCHES 1923
3.47 INCHES 1984
3.05 INCHES 1914
3.03 INCHES 2007
2.84 INCHES 1947
2.62 INCHES 1957
2.46 INCHES 1959, 1960

TEN DRIEST OCTOBER`S IN DENVER WEATHER HISTORY SINCE 1872:

 T   INCHES 1934
0.01 INCHES 1933
0.05 INCHES 1944, 1962
0.06 INCHES 1948, 1954, 1988
0.08 INCHES 2001, 2003
0.10 INCHES 1980
0.12 INCHES 1876, 1938, 1950
0.17 INCHES 1907
0.18 INCHES 1952, 1964
0.19 INCHES 1879, 1894, 1927

TEN SNOWIEST OCTOBER`S IN DENVER WEATHER HISTORY SINCE 1872:

31.2 INCHES 1969
22.7 INCHES 1906
22.1 INCHES 1997
17.8 INCHES 1923
17.2 INCHES 2009
16.4 INCHES 1897
16.2 INCHES 1929
14.0 INCHES 1889
13.8 INCHES 1905
13.6 INCHES 1908

THERE WERE 3 DAYS IN WHICH THUNDER WAS OBSERVED AT DENVER
INTERNATIONAL AIRPORT...NO DAYS WITH HAIL AND NO DAYS WITH DENSE FOG
WITH A VISIBILITY AT OR BELOW 1/4 MILE DURING THE MONTH. A PEAK WIND
OF 44 MPH FROM A NORTHERLY DIRECTION WAS RECORDED ON THE 2ND.

$$



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