Ottawa will have warmer weather on Tuesday after a cold night.
A frost advisory remained active for the region, with conditions expected to continue for a couple of hours before clearing up in the later morning.
The high will reach 18 C, with a mixture of sun and clouds, and a 30 per cent chance of light showers in the late afternoon.
Wednesday will be the warmest day of the week, reaching a high of 24 C.
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