Humidity lowering across North Grenville
A brief respite is in order for heat weary residents in Ontario and Quebec. Temperatures and humidity have been almost unbearable. The combination of warm temperatures and humidity values in the 70 per cent range had humidex values well over 40C yesterday and today. With that type of heat the dewpoints were in the Key West, Florida range!! Very tropical indeed. A weak cold front passage will begin to dry out the air slowly. Temperatures however will remain quite warm. The high tomorrow and Thursday will be around 30C while Friday should be a touch cooler with showers and thunderstorms, around 26C.

Hurricane Emily swept over the resort towns of Cancun and Cozumel and is now heading for the Texas/Mexican border. A hurricane warning is in effect for the south Texas coast. Tropical Storm force winds and high tides have begun and will continue to increase as the evening wears on. Brownsville is in the centre of the target cone for Emily.