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Extreme heat to last through the week

The evenings won't provide much relief, with temperatures forecast in the low 20's.
Hot Summer
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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.
 
Today: Sunny. 
Guaranteed high 33, humidex near 38.
 
This evening: Clear.
Temperature near 29.
 
Overnight: Clear.
Morning low near 20. 
 
Tomorrow: Sunny.
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.
Mainly sunny.
Highs 26-29.
 
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

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