A Statistical Preview of Denver's October Weather. http://t.co/bn0BN5b3
— NWS Boulder (@NWSBoulder) September 30, 2012
Here’s the link to the preview from the National Weather Service Denver/Boulder office. Here’s an excerpt:
DENVER’S MONTHLY MEAN TEMPERATURE FOR OCTOBER IS 50.9 DEGREES (1981-2010 AVERAGES) AND IS DENVER’S FIFTH WARMEST MONTH OF THE YEAR BEHIND JULY, AUGUST, JUNE AND MAY RESPECTIVELY. THE MONTH STARTS WITH A NORMAL HIGH OF 72 DEGREES AND ENDS WITH A NORMAL HIGH OF 59 DEGREES. FOR LOW TEMPERATURES, THE MONTH BEGINS WITH A NORMAL OF 42 DEGREES AND TRENDS BELOW THE FREEZING MARK TO FINISH WITH A NORMAL OF 31.
THE WARMEST TEMPERATURE EVER RECORDED DURING THE MONTH OF OCTOBER, SINCE RECORDS BEGAN IN 1872, WAS 90 DEGREES AND OCCURRED ON THE FIRST DAY ON THE MONTH WAY BACK IN 1892. THIS IS ALSO THE LATEST 90 DEGREE OR HIGHER TEMPERATURE DENVER HAS RECORDED. THE COLDEST TEMPERATURE EVER RECORDED IN DENVER FOR OCTOBER WAS A FRIGID -2 DEGREES AND OCCURRED ON THE 29TH DAY OF 1917…
ALTHOUGH SEPTEMBER IS THE FIRST MONTH OF THE SNOW SEASON IN DENVER, OCTOBER IS THE MONTH WHEN DENVER AND THE ENTIRE FRONT RANGE BEGIN TO SEE THE STRONG LIKELIHOOD OF COLD PACIFIC STORM SYSTEMS BRINGING THE SEASON’S FIRST REAL SNOWFALL. SINCE SNOW MEASURING BEGAN IN DENVER IN 1882, MONTHLY SNOW TOTALS OF GREATER THAN 0.1″ HAS OCCURRED 100 TIMES WITH 15 YEARS RECEIVING A TRACE AND THE 15 YEARS MISSING OUT ENTIRELY FROM ANY SNOW…
AFTER 7 CONSECUTIVE MONTHS OF ABOVE NORMAL TEMPERATURES IN THE DENVER AREA ALONG WITH BELOW NORMAL PRECIPITATION TOTALS FOR SPRING AND SUMMER PERIOD, THE MID TO LONG RANGE FORECAST MODELS CONTINUE TO INDICATE A BIAS TOWARD THE STABLE DRY WEST TO SOUTHWESTERLY FLOW ALOFT OVER COLORADO. THE CLIMATE PREDICTION CENTER’S LONG RANGE OUTLOOK INDICATES A BIAS TOWARD ABOVE NORMAL TEMPERATURES WITH PRECIPITATION PROBABILITIES HOLDING NEAR SEASONAL NORMALS REGION WIDE.