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

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CXUS55 KBOU 021424
CLMDEN

CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
825 PM MDT WED NOV 2 2016

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

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              89   10/16/1991
                        10/10/1910
 LOW               -2   10/29/1917
HIGHEST            86   10/16        83       3       87  10/11
LOWEST             25   10/20        22       3       28  10/28
AVG. MAXIMUM     74.5              65.3     9.2     70.1
AVG. MINIMUM     41.2              36.6     4.6     42.8
MEAN             57.8              50.9     6.9     56.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.4    -0.4        0
DAYS MIN <= 32      3               8.5    -5.5        1
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.17   1969
 MINIMUM            T   1934
TOTALS           0.26              1.02   -0.76     1.76
DAILY AVG.       0.01              0.03   -0.02     0.06
DAYS >= .01         3               5.3    -2.3        6
DAYS >= .10         1               2.4    -1.4        3
DAYS >= .50         0               0.5    -0.5        2
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.22   10/05 TO 10/06           10/20 TO 10/21

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.0               4.0
 RECORD OCTOBER  31.2                      1969

DEGREE_DAYS
HEATING TOTAL     231               440    -209      274
 SINCE 7/1        310               581    -271      301
COOLING TOTAL      17                 5      12       16
 SINCE 1/1        878               769     109      877

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

WIND (MPH)
AVERAGE WIND SPEED              10.0
RESULTANT WIND SPEED/DIRECTION   4/197
HIGHEST WIND SPEED/DIRECTION    33/260    DATE  10/04
HIGHEST GUST SPEED/DIRECTION    42/270    DATE  10/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     40

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                3     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      3
HAZE                      0

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

............OCTOBER 2016...4TH WARMEST ON RECORD............

UPPER LEVEL HIGH PRESSURE WHICH DOMINATED THE ROCKY MOUNTAIN REGION
MUCH OF THE MONTH...PRODUCED UNSEASONABLY WARM TEMPERATURES ACROSS
NORTH CENTRAL AND NORTHEASTERN COLORADO. THE STORM TRACK REMAINED
NORTH OF THE COLORADO WHICH RESULTED IN DRY WEATHER ACROSS THE
STATE.

TEMPERATURES:

THE AVERAGE TEMPERATURE AT DENVER INTERNATIONAL AIRPORT FOR THE
MONTH WAS 57.8 DEGREES F, WHICH WAS 6.9 DEGREES ABOVE NORMAL. THIS
MAKES OCTOBER 2016 THE 4TH WARMEST ON RECORD. THE WARMEST OCTOBER ON
RECORD OCCURRED IN 1950...WITH AN AVERAGE MONTHLY TEMPERATURE OF
59.9 DEGREES F. THE COLDEST OCTOBER ON RECORD WAS 38.9 DEGREES F
BACK IN 1969. ON THE 16TH...THE TEMPERATURE CLIMBED TO 86 DEGREES F
WHICH IS THE HIGHEST TEMPERATURE OF THE MONTH. THE COLDEST
TEMPERATURE OF 25 DEGREES F OCCURRED ON THE MORNING OF THE 20TH.
THERE WERE SEVERAL TEMPERATURE RECORDS BROKEN THROUGHOUT THE MONTH
WHICH ARE LISTED BELOW:

DATE     TEMPERATURE   TYPE OF RECORD    OLD RECORD   YEAR LAST SET
         DEGREES  (F)
OCT 15TH     85        NEW RECORD MAX        83           2014
OCT 27TH     83        NEW RECORD MAX        80           1966
OCT 28TH     82        NEW RECORD MAX        80           1994
OCT 28TH     55        NEW RECORD HIGH MIN   52           2001
OCT 31ST     79        RECORD MAX TIED       79           1950

FIFTEEN WARMEST OCTOBER`S IN DENVER WEATHER HISTORY SINCE 1872:

59.9 1950
57.9 1963...1934
57.8 2016
57.4 1933
57.0 1947
56.5 2015
56.3 1875
55.9 1956...1940...1938...1921
55.4 1910
55.3 2010...1884

FIFTEEN COLDEST OCTOBER`S IN DENVER WEATHER HISTORY SINCE 1872:

38.9 1969
42.9 2009
43.3 1925
44.0 2002
44.3 1923
44.7 1984
45.9 1970
46.3 1877
46.5 1919...1913
46.6 1905...1873
46.9 1911
47.2 1883
47.7 2013

PRECIPITATION:

PRECIPITATION FOR THE MONTH OF OCTOBER AT DENVER INTERNATIONAL
AIRPORT WAS 0.26 INCHES...WHICH IS 0.76 INCHES BELOW THE NORMAL OF
1.02 INCHES. THERE WERE ONLY 3 DAYS WITH MEASURABLE PRECIPITATION
DURING THE MONTH. 0.22 INCHES OF PRECIPITATION FELL ON THE 6TH
...WHICH IS THE GREATEST DAILY AMOUNT FOR THE MONTH. NO SNOW FELL
DURING THE MONTH WHICH IS 4.0 INCHES BELOW NORMAL. THIS IS THE 3RD
CONSECUTIVE OCTOBER WITH NO SNOW...WHICH IS THE FIRST TIME IN
DENVER WEATHER HISTORY THIS HAS HAPPENED.

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 1960

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

TRACE       1934
0.01 INCHES 1933
0.05 INCHES 1962...1944
0.06 INCHES 1988...1954...1948
0.08 INCHES 2003...2001
0.10 INCHES 1980

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

31.2 INCHES 1969
22.7 INCHES 1906
22.1 INCHES 1997
17.8 INCHED 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 NO DAYS IN WHICH THUNDER WAS OBSERVED AT DENVER
INTERNATIONAL AIRPORT. THERE WERE 3 DAYS WITH DENSE FOG WITH A
VISIBILITY AT OR BELOW 1/4 MILE DURING THE MONTH. THE PEAK WIND GUST
OF 42 MPH FROM THE WEST OCCURRED ON THE 3RD.
$$



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