Sunday, October 5, 2014, 8:00 AM, Clarksville, MD
First morning in the 30’s brings the first frost since . . .
Walking out to our chicken coop to release the birds from their (anti-predator) locked pen for the day, I had to walk thru our first frost of the season. When I went inside to get my camera, I noted that it was 38-degrees at our kitchen window thermometer.
Our last frost was 160 to 180 days ago, sometime in late March and into mid-April.
Our first frosts of autumn in central Maryland usually don’t come until the third to last week of October, so this first frost is definitely two to three weeks early.
Frost is a covering of minute ice crystals, formed from the atmosphere at night upon the ground and exposed objects when they have been cooled by radiation below the dew point. I bet we don’t get our first hard, killing frost until much later this month.
First Frost Dates for Maryland: http://www.washingtonpost.com/blogs/capital-weather-gang/post/when-should-the-washington-dc-area-expect-to-see-its-first-freeze-of-the-cold-season/2011/10/19/gIQAbWmZ3L_blog.html