Government of Canada Alert for Caledon March 29th
Periods of rain will begin after midnight tonight and continue Saturday. Rainfall amounts of 15 to 25 mm are likely by Saturday evening when the rain is expected to change to snow. Rainfall amounts exceeding 25 mm are possible.
This rain is the result of a low pressure system that will track over Southern Ontario on Saturday. There remains considerable uncertainty in the exact track of this system and the associated precipitation. Rainfall warnings may be required.