September is one of those transition months where Summer is trying to hang on and Autumn is trying to establish itself…the result is usually big temperature swings and we’ll see that this week.
We are feeling the chill this morning as a cool Canadian air mass dug in last night…early morning temps in the 30s and 40s will be erased quickly under mostly sunny skies and highs will reach 70 this afternoon. There will be a few feathery high clouds during the day…a sign of a warm up on the way. Clouds will thicken up late tonight as very warm air surges in at middle atmospheric levels and may create just enough lift for a brief shower tomorrow morning. Clouds will lift north during the day and brighter sunshine will return in the afternoon as the warmth is establishing itself…highs climb up to 80. They won’t stop there…for the first time since the middle of July we are facing 90+ degree heat! One last gasp of hazy, hot and humid conditions are in store for the middle of the week. Right now expected highs are 92 on Wednesday and 84 on Thursday.
Thursday will be scared by thunderstorms and some of the storms may be on the strong side as a potent cold front knocks down the heat for the end of the week and upcoming weekend.