Thunderstorm watches for parts of the region on Wednesday
Wednesday will be hot and steamy to start off, with a mix of sun and cloud mid morning with a chance of showers and thunderstorms as a cold front starts to move in.
"The winds gusting in advance of that front, out of the southwest, 30 [km/h] with gusts to 50 km/h, it's going to be extremely hot and humid into the afternoon. It's gong to feel like the mid-30s," said CTV News London meteorologist Julie Atchison.
There is the chance of showers and thunderstorms any time throughout the day on Wednesday as the front approaches with lots of instability across southern Ontario.
"Any time a front comes through and you have an air mass that is this hot and humid, there is the potential for thunderstorms to develop. So heading into the afternoon we could still see some active weather as the front pushes off to the east,"
The normal daytime high for this time of year is around 20 C and the low around 9 C.
Severe thunderstorm watch
- Hanover
- Dundalk
- Southern Grey County
- Owen Sound
- Blue Mountains
- Northern Grey County
- Listowel
- Milverton
- Northern Perth County
- Stratford
- Mitchell
- Southern Perth County
- Tillsonburg
- Woodstock
- Oxford County
Here's a look at the rest of the forecast
Wednesday Night: Partly cloudy with 40 per cent chance of showers this evening. Clearing overnight. Risk of a thunderstorm early this evening. Wind southwest 30 km/h gusting to 50 becoming light this evening. Low 13.
Thursday: Sunny. Wind west 20 km/h becoming light in the afternoon. High 25. Humidex 26. UV index 8 or very high.
Friday: A mix of sun and cloud. High 27.
Saturday: Cloudy with 60 per cent chance of showers. High 22.
Sunday: A mix of sun and cloud. High 21.
Monday: Cloudy with 30 percent chance of showers. High 19.
CTVNews.ca Top Stories
DEVELOPING Alberta's request for federal assistance approved after fast-moving wildfire hit Jasper National Park: Trudeau
Prime Minister Justin Trudeau announced on social media that Ottawa has approved Alberta's request for federal assistance after a fast-moving wildfire hit Jasper National Park and its townsite late Wednesday.
Jasper mayor says alert system to be reviewed after message 'glitch'
More than 25,000 people have been displaced from Jasper National Park since wildfires started to threaten the picturesque corner of Alberta Rockies on Monday, but the mayor of its namesake municipality says not everyone received an evacuation alert when it was sent out.
Canada's premiers forced to confront escalating climate change-related disasters
Many of Canada's provincial and territorial leaders remained consumed by climate change-related natural disasters that have only escalated since they met for meetings in Halifax last week.
Norad intercepts Russian and Chinese bombers operating together near Alaska in apparent first
The North American Aerospace Defence Command (Norad) intercepted two Russian and two Chinese bombers flying near Alaska Wednesday in what appears to be the first time the two countries have been intercepted while operating together.
Biden explains why he ended re-election bid in Oval Office address
U.S. President Joe Biden on Wednesday delivered a solemn call to voters to defend the country's democracy as he laid out in an Oval Office address his decision to drop his bid for reelection and throw his support behind Vice President Kamala Harris.
Barrie-Innisfil MPP 'blacked-out' and crashed car into window of child care centre
Staff at a Barrie child care centre say they are frustrated by what they call a local MPP's inadequate response after a car crashed through a window in one of the toddler rooms.
Monday breaks the record for the hottest day ever on Earth
Driven by oceans that won't cool down, an unseasonably warm Antarctica and worsening climate change, Earth's record hot streak dialed up this week, making Monday the hottest day humans have measured.
Prince Harry says lawsuits against U.K. press 'central piece' in family breakdown
Prince Harry, speaking in clips published on Wednesday from a new documentary, said his legal battles with Britain's tabloid press have contributed to the breakdown of his relationship with the royal family.
2 Canadians being 'sent home immediately,' removed from Olympic team after drone incident
An analyst and an assistant coach with Canada Soccer are being removed from the Canadian Olympic Team and 'sent home immediately,' according to the Canadian Olympic Committee.