Monday, March 25, 2013

Avoiding 40 After Ides Of March

Since 1982, there have been 23 instances from March 15th on where we have avoided 40 degrees for a daily high. It's a pretty rare accomplishment as the average high around here at this time of the year is 56 so one would need a day where the high is at least 17 degrees below average.  That said, it's happened about twice every three years.

The most recent occurrence was not last Thursday as we squeaked out a high of 40 degrees just after 5 PM but it was nine years ago, on March 22nd.  High that day was 38.

Between 1992 and 2004, not hitting 40 in late March or early April (April 8th) was a common occurrence as nine years in thirteen featured an anomalously colder than average high temperature at some point from March 15th on.  In 1992 and 1993 alone, eight such sub 40 degree days occurred!

The coldest post-March 15th days in recent years were March 15th and 18th, 1993 -- in the wake of the Superstorm as highs both days only got to 30 degrees.

The last time we avoided 40 in April was in 2003 -- April 8th had a high of 38 degrees, the day after a snowfall dropped a couple of inches of snow at the Airport, more to the north and northwest.

While today is certainly a cold day climatically, there have been colder days later than March 25th.  However, it is a sub 40 day...and our first after March 15th in nine years.