Weather: Heat warning continues with humidex set to top 40, thunderstorms possible

Article content

A heat warning remains in effect Wednesday with hot and humid conditions expected to linger through Thursday, which would mark a full week of sweltering conditions.

Article content

But relief is finally in sight with a throw-open-the-windows low in the forecast for Thursday night.

Wednesday is expected to reach 32 C with a humidex of 40, Environment and Climate Change Canada said.

It’s forecast to be sunny in the morning and early afternoon then a mix of sun and cloud with a 30 per cent chance of showers in the late afternoon and early evening with the risk of a thunderstorm. The UV index is 7 or high.

All five city beaches are ready for business Wednesday, Ottawa Public Health says. In the NCC, La Pêche, Leamy Lake and Breton beaches remain closed, but all others are in good condition.

A high of 31 C with a humidex of 38 is forecast for Thursday with a mix of sun and cloud and a 40 per cent chance of afternoon showers and the risk of a thunderstorm. The UV index is expected to be 8 or very high.

Article content

A low of 14 C is expected Thursday night ushering in some cooler days.

Friday’s forecast is for a high of 25 C under mixed skies and a low of 13 C.

Saturday is expected to be cloudy with a 60 per cent chance of showers, day and night, a high of 23 C and a low of 16 C.

A high of 28 C is expected Sunday under mixed skies with a low of 18 C.

“Normals” for this time of year are highs of 23 C and lows of 13 C.

“Extreme heat affects everyone,” the weather agency warned, adding that the risks are greater for young children, pregnant women, older adults, people with chronic illnesses and anyone working or exercising outdoors.

Watch for the effects of heat illness including swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.

Three emergency cooling centres remain open Wednesday offering relief from the heat to residents in need, the City of Ottawa said.

Hours are 11 a.m. to 7 p.m. at the Sports Hall of Fame at Ottawa City Hall at 110 Laurier Avenue West, the Plant Recreation Centre at 930 Somerset Street West and the Overbrook Community Centre at 33 Quill Street.