The computer models, it seems, have been playing catch-up with the warmth this month, which is flirting with rarefied heights.
The daily temperature records for this week probably are out of reach, but how often do we see a forecast highs in the mid and upper 60s in February – and those won't even be the warmest days.
Thursday's forecast high of 72 has an outside shot at the 75 set on Feb. 23, 1874, the longest-standing daily high-temperature record.
At the time, what would become one of the nation's most-enduring official temperature databases was a mere 54 days old.
Based on the forecasts and what has happened thus far, February 2017 will finish with an average temperature of 44 in Philadelphia , which would easily surpass the standing record of 42.2, set in 1925.
What's more, the February heat rally could propel the meteorological winter to No. 6 on the all-time list, with a Dec. 1 to Feb. 28 average temperature of 40.3. See the list below.
Take that, Phil.
As we've noted, mild winters are nothing new: No. 1 on the list is 1932, No. 2, 1890. Colonial journals mention mild winters as far back as the 17th century, in the heart of the Little Ice Age.
What is different is their frequency.
By the end of the month, six of the 10 warmest will have occurred since 1991.