CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
200 PM MST TUE FEB 2 2010
...................................
...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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 76 01/27/1888
LOW -29 01/09/1875
HIGHEST 58 01/16 76 -18 71 01/21
LOWEST -16 01/07 -29 13 -11 01/27
AVG. MAXIMUM 43.0 43.2 -0.2 48.2
AVG. MINIMUM 17.7 15.2 2.5 21.6
MEAN 30.4 29.2 1.2 34.9
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 2 6.5 -4.5 4
DAYS MIN <= 32 31 29.8 1.2 26
DAYS MIN <= 0 3 3.8 -0.8 1
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.35 1883
MINIMUM 0.01 1933
1934
1952
TOTALS 0.07 0.51 -0.44 0.13
DAILY AVG. TRACE 0.02 -0.02 0.00
DAYS >= .01 2 5.8 -3.8 3
DAYS >= .10 0 MM MM 0
DAYS >= .50 0 MM MM 0
DAYS >= 1.00 0 MM MM 0
GREATEST
24 HR. TOTAL 0.05 01/06 TO 01/06 0.10 01/25 TO 01/26
SNOWFALL (INCHES)
RECORDS
TOTAL 24.3 1992
TOTALS 2.6 7.7 -5.1 4.9
DEGREE_DAYS
HEATING TOTAL 1069 1111 -42 926
SINCE 7/1 3808 3597 211 3293
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 0
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 10/07
LATEST 05/05
.................................................................
WIND (MPH)
AVERAGE WIND SPEED 7.9 10.7
RESULTANT WIND SPEED/DIRECTION 4/201 MM
HIGHEST WIND SPEED/DIRECTION 29/060 DATE 01/06 43/350
HIGHEST GUST SPEED/DIRECTION 35/310 DATE 01/12 49/350
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
NUMBER OF DAYS FAIR 7 7
NUMBER OF DAYS PC 22 23
NUMBER OF DAYS CLOUDY 2 1
AVERAGE RH (PERCENT) 61
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 0 SNOW 1
LIGHT SNOW 4 SLEET 0
FOG 8 FOG W/VIS <= 1/4 MILE 3
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
...DENVER'S JANUARY 2010 WAS VERY DRY AND A LITTLE WARMER THAN NORMAL...
ONLY A TOTAL OF 0.07 INCH OF LIQUID EQUIVALENT WAS COLLECTED DURING
JANUARY 2010 WHICH CAME FROM MELTED SNOWFALL. THIS IS 0.44 INCH BELOW
THE NORMAL OF 0.51 INCH. IT ALSO TIED 1961 AS THE 6TH DRIEST DENVER
SINCE DENVER RECORDS KEEPING BEGAN IN 1872. ONLY 2 DAYS RECORDED
MEASURABLE MOISTURE WITH THE 6TH COLLECTING THE MOST IN A 24 HOUR
PERIOD WITH ONLY 0.05 INCH. IN THE SNOWFALL DEPARTMENT WHERE
MEASUREMENTS ARE TAKEN NEAR THE DENVER INTERNATIONAL AIRPORT (DIA)...
ONLY 2.6 INCHES OF THE WHITE STUFF WAS RECORDED. THIS AGAIN WAS BELOW
THE NORMAL OF 7.7 INCHES. FOR THE SEASON...THE GOOD NEWS IS THAT THE
JULY THROUGH JANUARY'S SEASONAL TOTAL IS 40.2 INCHES WHICH IS 6.9 INCHES
ABOVE THE NORM OF 33.3 INCHES FOR THE PERIOD OF TIME. 40.2 INCHES IS FAR
BETTER THAN THE 2008-09 SEASONAL TOTAL THROUGH JANUARY OF A MERE 16.9
INCHES. THERE WERE NO PRECIPITATION RECORDS SET OR TIED DURING THE MONTH.
JANUARY 2009 TEMPERATURE STATISTICS TURNED OUT TO BE A NON-HEADLINE.
THE MONTH FINISHED WITH AN AVERAGE TEMPERATURE OF 30.4 DEGREES WHICH
IS 1.2 DEGREES ABOVE THE 29.2 NORMAL. TEMPERATURES RANGED FROM A HIGH
OF 58 DEGREES DOWN TO A LOW OF A NON-RECORD -16 DEGREES. IN FACT...
THERE WERE NO TEMPERATURE RECORDS SET OR TIED DURING JANUARY 2010. ALL
31 DAYS HAD LOW TEMPERATURES AT OR BELOW FREEZING AND 3 DAYS HAD MINIMUM
TEMPERATURES BELOW ZERO. TWO DAYS HAD HIGH MERCURY READINGS AT OR BELOW
FREEZING. JANUARY 2009 SEEMED LIKE A COOL MONTH AS THERE WERE ONLY
7 READINGS THAT REACHED INTO THE FIFTIES. OBVIOUSLY THE REST OF THE
MONTH ONLY SAW READINGS IN THE 40S OR BELOW.
THREE DAYS HAD DENSE FOG (VISIBILITY OF 1/4 MILE OR LESS) RECORDED AT DIA.
LIGHT FOG WAS OBSERVED ON 8 DAYS. THE PEAK WIND DURING THE MONTH WAS A
FAIRLY LIGHT GUST OF 35 MPH FROM A NORTHWESTERLY DIRECTION (310 DEGREES).
BENTON
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