Temporary relief from the sticky and humid weather is just around the corner.
Environment Canada Meteorologist Geoff Coulson said a persistent flow coming up from the American deep south is to blame for the humid weather we've experienced over the last few days.
"There's been a large area of high pressure sort of anchored off the eastern seaboard of the U.S. and that's acting as a big heat pump that's bringing up this air mass from the American deep south," said Coulson. "That pattern does start to break down as we go through the end of this week and then we should be into a fresher air mass as we get into the weekend."
Coulson said the persistent humid conditions means there's the potential for severe thunderstorms to develop.
"The chance of thunderstorms today and tomorrow, maybe even into Thursday as well, just reminding everyone of the lightning safety rule which says when thunder roars, go indoors," he said. "So if you're close enough to hear the thunder, that's the time to find a solid shelter."
Environment Canada issued a severe thunderstorm warning for Watford, Pinery Park and Eastern Lambton County late Tuesday afternoon. It was lifted after about 30 minutes.
Coulson said forecast models for this summer show the likelihood of above normal temperatures from northwestern Ontario through the Great Lakes basin, including Sarnia-Lambton.
"We got a taste of it in the last few days, both with the heat and the humidity, and it is only early June, and we know traditionally that our warmest temperatures tend to happen in July and into the month of August," said Coulson. "So, we do still have a long way to go and summer really hasn't officially arrived, but that's the pattern that's shaping up right now, that we are likely looking at a warmer than normal summer."
Normal daytime highs for this time of year are around 24 C, 75 F and lows of about 12 C, 54 F.
