CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE BOULDER, CO
335 PM MST TUE JAN 4 2011

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

...THE DENVER CO CLIMATE SUMMARY FOR THE YEAR OF 2010...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1872 TO 2010

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH             105   07/20/2005
                       08/08/1878
LOW              -29   01/09/1875
HIGHEST           102   07/17        64      38       98  08/23
LOWEST            -16   01/07        36     -52      -17  12/09
AVG. MAXIMUM     65.3              64.2     1.1     63.5
AVG. MINIMUM     37.0              35.8     1.2     36.0
MEAN             51.2              50.1     1.1     49.7
DAYS MAX >= 90     49              33.1    15.9       18
DAYS MAX <= 32     13              22.2    -9.2       26
DAYS MIN <= 32    158             156.1     1.9      161
DAYS MIN <= 0       5               9.0    -4.0        7

PRECIPITATION (INCHES)
RECORD
MAXIMUM        23.31   1967
MINIMUM         7.48   2002
TOTALS          12.86             15.81   -2.95    18.12
DAILY AVG.       0.03              0.04   -0.01     0.05
DAYS >= .01     71                89.1   -18.1     94
DAYS >= .10     24                MM      MM       45
DAYS >= .50      9                MM      MM       12
DAYS >= 1.00     3                MM      MM        3
GREATEST
24 HR. TOTAL    1.84    07/04 TO 07/04

SNOWFALL (INCHES)
RECORDS
TOTAL             118.7  1908-09
24 HR TOTAL        23.6  12/24/1982
SNOW DEPTH         MM     MM
TOTALS             27.8                MM      MM     63.7
LIQUID EQUIV        2.78               MM      MM     6.37
SINCE 7/1           4.8                MM      MM     37.6
LIQUID 7/1          0.48               MM      MM     3.76
SNOWDEPTH AVG.     LESS THAN 0.1       MM      MM     0
DAYS >= TRACE      42 (SINCE 01/01)    MM      MM    49
DAYS >= 1.0        10 (SINCE 01/01)    MM      MM    19
GREATEST
SNOW DEPTH          8   03/24                    7  03/27
24 HR TOTAL        10.8 03/23 TO 3/24            8.3 03/26 TO 3/27

DEGREE_DAYS
HEATING TOTAL    5774              6128    -354     5994
SINCE 7/1        2072               2486    -414     2739
COOLING TOTAL     870                696     174      533
SINCE 1/1         870                696     174      533

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

WIND (MPH)
AVERAGE WIND SPEED              9.6
RESULTANT WIND SPEED/DIRECTION  2/195
HIGHEST WIND SPEED/DIRECTION   52/220    DATE  05/24
HIGHEST GUST SPEED/DIRECTION   64/220    DATE  05/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

NUMBER OF DAYS FAIR           91
NUMBER OF DAYS PC            219
NUMBER OF DAYS CLOUDY         55

AVERAGE RH (PERCENT)     52

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             48     MIXED PRECIP               0
HEAVY RAIN               10     RAIN                      21
LIGHT RAIN               63     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       5
HEAVY SNOW                4     SNOW                      13
LIGHT SNOW               47     SLEET                      1
FOG                      97     FOG W/VIS <= 1/4 MILE     38
HAZE                     61

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


$$
    ...DENVER`S 2010 WAS NOT A VERY EXCITING WEATHER YEAR...

DENVER`S 2010 WAS NOT A VERY EXCITING WEATHER YEAR AS FAR AS STATISTICS GO.  SEASONAL SNOWFALL FROM JULY THROUGH DECEMBER WAS VERY DISMAL WITH ONLY 4.8 INCHES OF SNOWFALL RECORDED AT THE DENVER INTERNATIONAL AIRPORT (DIA). THIS WAS THE SECOND LEAST HALF A SNOW SEASON TOTAL BEHIND THE LEAST HALF SEASON SNOWIEST OF 3.8 INCHES RECORD IN 1888 (JULY-DECEMBER).  THE MOST HALF SEASON SNOWFALL OCCURRED IN 1913 WITH A WHOPPING 72.8 INCHES OF SNOWFALL.  THAT WAS NOT A TYPO.  FOR ANNUAL SNOWFALL (JANUARY - DECEMBER)...2010 FINISHED WITH ONLY 27.8 INCHES.  THIS YEAR SEPTEMBER AND OCTOBER HAD NO SNOWFALL AND THE FIRST MEASURABLE SNOWFALL OCCURRED ON NOVEMBER 15TH WITH 1.5 INCHES.  THEN THE YEAR FINISHED WITH THE NEXT AND FINAL SNOWFALL ON DECEMBER 29TH AND 30TH WITH A COMBINED TOTAL OF 3.3 INCHES WHICH CAME OUT TO THE TOTAL HALF SEASON TOTAL OF ONLY 4.8 INCHES.  THE SNOWIEST FULL SEASON WAS 118.7 INCHES IN 1908-09 WHILE THE LEAST FULL SNOWIEST SEASON WAS 20.8 INCHES IN THE 1888-89 SEASON. IN THE PRECIPITATION CATEGORY...12.86 INCHES WAS TOTALED AT DIA WHICH IS 2.95 INCHES BELOW THE ANNUAL NORMAL OF 15.81 INCHES.  THE 2010 PRECIPITATION TOTAL DID NOT GET INTO ANY OF THE TOP 10 CATEGORIES.  THE 1OTH DRIEST DENVER WAS 9.10 INCHES SET IN 1901 WHILE THE WETTEST DENVER WAS 23.31 INCHES SET IN 1967.  THE WETTEST MONTH THIS YEAR WAS JULY WITH 3.70 INCHES WHICH DID NOT GET INTO THE TOP 10 WETTEST JULYS BY ONLY 0.01 INCH.  THE DRIEST MONTH WAS 0.06 INCH IN SEPTEMBER WHICH TIED AS 5TH DRIEST SEPTEMBER SINCE 1872. DURING JANUARY...ONLY .07 INCH OF LIQUID WAS TOTALED WHICH TIED AS 6TH DRIEST JANUARY.  THERE WERE 71 DAYS WITH MEASURABLE MOISTURE WHICH IS 0.01 INCH OR GREATER.  THIS IS 18 DAYS BELOW THE NORMAL OF 89 DAYS. THERE WERE 24 DAYS WITH 0.1 INCH OR MORE...9 DAYS WITH 0.5 INCH OR MORE AND 3 DAYS WITH 1.00 INCH OR MORE.

THE YEAR FINISHED WITH A NEAR NORMAL ANNUAL AVERAGE TEMPERATURE OF 51.2  DEGREES WHICH IS ONLY 1.1 DEGREES ABOVE THE NORMAL 50.1 DEGREES. TEMPERATURES RANGED FROM A RECORD SETTING 102 DEGREES ON JULY 17TH DOWN TO A NON-RECORD -16 DEGREES ON JANUARY 7TH.  THE ANNUAL AVERAGE TEMPERATURE DID NOT GET INTO EITHER TOP 10 CATEGORY. THE WARMEST YEAR WAS 54.8 AVERAGE DEGREES IN 1934 WHILE THE COLDEST YEAR WAS 47.6 DEGREES IN 1911.  THE AVERAGE HIGH TEMPERATURE THIS YEAR WAS 65.3 DEGREES WHICH WAS 1.1 DEGREES ABOVE NORMAL WHILE THE AVERAGE LOW MERCURY READING WAS 37.0 DEGREES...1.2 DEGREES ALSO ABOVE NORMAL. THERE WERE 49 NINETY DEGREE DAYS...16 ABOVE NORMAL AND 158 DAYS WITH THE LOW TEMPERATURE DROPPING TO FREEZING OR BELOW WHICH IS ONLY 2 ABOVE NORMAL.

48 THUNDERSTORMS WERE OBSERVED AT DIA WHICH WAS 7 ABOVE NORMAL.  ONE THUNDERSTORM WAS ACCOMPANIED WITH HAIL AND ONE FUNNEL/TORNADO SIGHTED. 29 DAYS HAD DENSE FOG WHICH IS 19 ABOVE NORMAL.  THE AVERAGE WIND SPEED AT THE AIRPORT WAS 9.6 MPH WHILE THE PEAK GUST FOR THE YEAR WAS 64 MPH...A NEW DENVER MAY RECORD...FROM A SOUTHWESTERLY DIRECTION. ANOTHER WIND GUST RECORD WAS SET IN NOVEMBER WITH A 55 MPH GUST FROM A NORTHWESTERLY DIRECTION.

THERE WERE ONLY 14 NEW RECORDS EITHER BROKEN OR TIED: 9 RECORD HIGHS WERE  SET OR TIED, 3 HIGH MINIMUM TEMPERATURES WERE SET OR TIED, ONE 24 HOUR RECORD PRECIPITATION RECORD SET AND 2 MAXIMUM WIND GUSTS RECORDS ESTABLISHED.


TO SEE A BRIEF MONTHLY SUMMARY FOR EACH OF THE MONTHS OF 2010...CLICK HERE

ALL-IN-ALL IT WAS NOT AN EXCEPTIONAL WEATHER YEAR FOR DENVER.

BENTON


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