Looking back at January 2013 the numbers reveal a month that wasn’t particularly extraordinary by any measure. Temperatures were slightly below average and precipitation was a bit less than normal.
The first half of the month was notable for cold while the second half for the most part was considerably warmer.
Temperatures for the first three days were well below normal before we entered a brief period with above average temperatures. That was followed by very cold days on the 12th and 13th when high temperatures only reached the teens. Most of the following two weeks were notable for highs in the 50s and 60s.
The month started out extraordinarily dry with a mere 0.3 inch of snow being recorded during the first 27 days. On the 28th though we received a decent little shot of snow to drive up the numbers.
The average temperature for the month came in at 29.7 degrees. This was a full degree below the Denver January average of 30.7 degrees. At the official Denver station at Denver International Airport, the monthly average was slightly warmer at 30.3 degrees.
Temperatures in Thornton ranged from a high of 67.8 degrees on the 24th down to a low of -2.4 degrees on the 15th. Denver recorded a highest temperature of 66 degrees, also on the 24th, and a low of -12 degrees on the 12th.
There were no temperature records set during the month.
In terms of precipitation, an anemic 0.21 inch was measured in Thornton while Denver fared better with 0.31 inch. The January average is 0.41 inch so both locations were a good bit below normal.
Snowfall was similarly light with Thornton recording 3.7 inches, most of which fell during the storm on the 28th and 29th. Out at DIA Denver officially measured 4.6 inches for the month. Average for January is 7.0 inches.
None of the precipitation or snowfall measurements were records.
Click here to view Thornton’s January 2013 Climate Summary
From the National Weather Service:
...THE DENVER CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2013...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2013
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 66 01/24 76 -10 66 01/21
LOWEST -12 01/12 -29 17 -6 01/11
AVG. MAXIMUM 44.6 44.0 0.6 50.3
AVG. MINIMUM 16.0 17.4 -1.4 21.6
MEAN 30.3 30.7 -0.4 36.0
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX = .01 4 4.1 -0.1 4
DAYS >= .10 1 0.9 0.1 1
DAYS >= .50 0 0.0 0.0 0
DAYS >= 1.00 0 0.0 0.0 0
GREATEST
24 HR. TOTAL 0.22 01/28 TO 01/29
SNOWFALL (INCHES)
RECORDS
TOTAL 24.3 1992
TOTALS 4.6 7.0
DEGREE_DAYS
HEATING TOTAL 1067 1063 4 891
SINCE 7/1 3300 3531 -231 3325
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
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WIND (MPH)
AVERAGE WIND SPEED 8.8
RESULTANT WIND SPEED/DIRECTION 4/205
HIGHEST WIND SPEED/DIRECTION 38/290 DATE 01/24
HIGHEST GUST SPEED/DIRECTION 45/290 DATE 01/24
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.50
NUMBER OF DAYS FAIR 8
NUMBER OF DAYS PC 20
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 48
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 1 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 1 SNOW 1
LIGHT SNOW 5 SLEET 0
FOG 7 FOG W/VIS