It’s July. We should be focusing on beach balls, barbeques and baling hay … and not worrying about frost, right?

Well, believe it or not, a frost advisory was issued last night for parts of northern New Brunswick.  That’s right, frost!  Frost advisories are issued when temperatures are expected to drop to the freezing mark during the growing season, leading to potential damage and destruction to plants and crops.

The ridge of high pressure that moved in on Saturday put an end to the heat and humidity, brought the wind around to the northwest and ushered in a lovely dry air mass.  In the absence of clouds and wind, dry air cools down quickly; just ask residents of New Brunswick.   Just after 3 am, it was 5.1 in Saint John!  It was also cool in Fredericton at 6 degrees and only 3 in Edmundston.  There were some cooler than normal temperatures in Nova Scotia and PEI too.

Just before sunrise it was 4 in Truro and Sheet Harbour NS.  There were reports of near freezing temperatures in the Margaree too!

Is this much colder than it should be?  Absolutely!  The normal daytime highs for late July range from 23 to 26 and the normal overnight lows should be between 11 and 14. 

July frost does happen. On July 26th in 1965 it was -1.1 in Doaktown NB;  July 27th 1942 it was  -1.7 in Upper Stewiacke NB.

No frost tonight, as the upper wind has shifted and clouds are moving in; it’s time for some much needed rain.  I wish I had more rain for you, but for now, only 5-10 mm tonight and tomorrow morning.  I’ll have your complete forecast details tonight on CTV News at 5 and 6.

 

Chief Meteorologist

Cindy Day