000
CXUS55 KBOU 011753
CLMDEN
DENCLMDEN 000
TTAA00 KBOU 010810
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
1153 AM MDT TUE MAY 1 2012
...................................
...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF APRIL 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 90 04/30/1992
LOW -2 04/02/1975
HIGHEST 88 04/24 90 -2 84 04/02
LOWEST 24 04/07 -2 26 19 04/04
AVG. MAXIMUM 68.6 61.5 7.1 62.7
AVG. MINIMUM 37.9 33.3 4.6 34.0
MEAN 53.3 47.4 5.9 48.4
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.3 -0.3 0
DAYS MIN <= 32 4 13.0 -9.0 11
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 8.24 1900
MINIMUM 0.03 1963
TOTALS 1.39 1.71 -0.32 1.07
DAILY AVG. 0.05 0.06 -0.01 0.04
DAYS >= .01 8 9.1 -1.1 10
DAYS >= .10 4 4.5 -0.5 6
DAYS >= .50 0 0.9 -0.9 0
DAYS >= 1.00 0 0.5 -0.5 0
GREATEST
24 HR. TOTAL 0.52 04/26 TO 04/27 04/20 TO 04/21
04/21 TO 04/21
04/21 TO 04/21
STORM TOTAL MM MM
(MM/DD(HH)) MM 04/21(00) TO 04/21(00)
04/21(00) TO 04/21(00)1
04/21(00) TO 04/21(00)1
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 1.0 MM
DEGREE_DAYS
HEATING TOTAL 352 529 -177 492
SINCE 7/1 5215 5731 -516 5309
COOLING TOTAL 6 1 5 0
SINCE 1/1 6 1 5 0
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 10/07
LATEST 05/05
..................................................
WIND (MPH)
AVERAGE WIND SPEED 11.5
RESULTANT WIND SPEED/DIRECTION 2/214
HIGHEST WIND SPEED/DIRECTION 44/350 DATE 04/15
HIGHEST GUST SPEED/DIRECTION 56/350 DATE 04/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.50
NUMBER OF DAYS FAIR 9
NUMBER OF DAYS PC 16
NUMBER OF DAYS CLOUDY 5
AVERAGE RH (PERCENT) 48
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 3
LIGHT RAIN 7 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 2
LIGHT SNOW 3 SLEET 0
FOG 9 FOG W/VIS <= 1/4 MILE 2
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
...APRIL 2012...DRIER AND MUCH WARMER THAN NORMAL...
THE MONTH STARTED OFF TO A VERY WARM START WITH A RECORD HIGH
TEMPERATURE OF 84 DEGREES ON THE FIRST. MUCH COOLER WEATHER AS WELL
AS SOME PRECIPITATION RETURNED TO DENVER ON THE 2ND AS AN UPPER
LEVEL STORM SYSTEM AND ASSOCIATED COLD FRONT MOVED ACROSS THE
REGION. THIS SYSTEM BROUGHT THE COLDEST AIR OF THE MONTH TO
DENVER...WITH A HIGH TEMPERATURE OF ONLY 35 DEGREES AND 1.0 INCH OF
SNOW ON THE 3RD. WARMER TEMPERATURES RETURNED TO THE AREA ON THE
5TH...WITH A STRETCH OF ABOVE NORMAL TEMPERATURES FROM THE 5TH
THROUGH THE 14TH. THE ONLY DAY DURING THIS PERIOD THAT WAS BELOW
NORMAL WAS THE 7TH. THIS WAS DUE TO THE FACT THAT THE MORNING LOW ON
THE 7TH DROPPED DOWN TO A CHILLY 24 DEGREES...WHICH WAS THE COLDEST
TEMPERATURE OF THE MONTH. TEMPERATURES DROPPED TO SLIGHTLY BELOW
NORMAL VALUES ON THE 15TH AND 16TH DUE TO THE PASSAGE OF AN UPPER
LEVEL TROUGH OF LOW PRESSURE AND WEAK COLD FRONT. ABOVE NORMAL
TEMPERATURES RETURNED ON THE 17TH...WITH TWELVE OF THE LAST FOURTEEN
DAYS RECORDING ABOVE NORMAL TEMPERATURES. DURING THIS PERIOD...A NEW
RECORD HIGH TEMPERATURE OF 88 DEGREES WAS ESTABLISHED ON THE 24TH.
TEMPERATURES:
APRIL 2012 BECAME THE 7TH WARMEST APRIL IN DENVER WEATHER HISTORY.
THE AVERAGE TEMPERATURE FOR THE MONTH WAS 53.3 DEGREES WHICH WAS 5.9
DEGREES ABOVE NORMAL. THE WARMEST APRIL ON RECORD IS 56.4 DEGREES
BACK IN 1946 AND 1981.
PRECIPITATION.
PRECIPITATION FOR THE MONTH WAS 1.39 INCHES...WHICH IS 0.32 INCHES
BELOW THE NORMAL 0F 1.71 INCHES. ONE INCH SNOWFALL WAS RECORDED AT
DENVER INTERNATIONAL AIRPORT...WHICH IS 5.6 INCHES BELOW THE NORMAL
OF 6.6 INCHES.
THERE WERE NO THUNDERSTORMS OBSERVED AT DENVER INTERNATIONAL AIRPORT
DURING THE MONTH. THERE WERE TWO DAYS WITH DENSE FOG WITH A
VISIBILITY AT OR BELOW 1/4 MILE DURING THE MONTH. THE PEAK
WIND OF 56 MPH FROM A NORTHERLY DIRECTION OCCURRED ON THE 15TH.
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