We won't see any relief from the heat until later this week.
With highs in the low to mid-30's forecast over the next few days, and humidex values in the high 30's and low 40's, Ottawa remains under a heat warning from Environment Canada.
The evenings won't provide much relief, with temperatures forecast in the low 20's.
Things are forecast to cool down Friday when a cold front moves in.
Jill Taylor's Ottawa Forecast:
Heat warning continues.
Guaranteed high 33, humidex near 38.
This evening: Clear.
Temperature near 29.
Morning low near 20.
High near 31, humidex near 42.
Thursday: Sun and cloud then scattered thunderstorms for afternoon/early evening.
Morning low near 21.
High near 34, humidex near 41.
Friday: Sun and cloud.
Morning low near 19.
High near 25.
For the weekend: Very comfortable morning lows near 12.
According to records from 1939-2017)
Record high: 36.1 (1966)
Record low: 6.7 (1940)
Greatest rainfall: 19.2mm (1997)
Greatest snowfall: cm ()
Average high: 26
Average low: 15