This website is a link to Ontario Weeds. It includes pictures and full descriptions.

http://www.omafra.gov.on.ca/english/crops/facts/ontweeds/weedgal1.htm

Day +7 cloudy rain 4.6mm Wind SW28km/h P.O.P.40%
Night -1 cloudy Wind WSW22km/h P.O.P.30%