Weather affects all of us in our daily activities. In Southwestern Ontario where I live, being surrounded by the Great Lakes brings a variety of weather that can change very quickly. Here are some links for Weather sites in both Canada and the US.

I wrote a blog post with more information about the weather station I used.

Environment Canada

Current Conditions and Local Forecasts Contains current conditions (updated hourly) and 5 day forecasts (Updated twice a day) for a local area.
Here is the page for London Ont.

Public Weather Warnings & Special Weather Statements

National Radar Radar Network. Clickable map
Exeter Radar Closest Radar to myself.

US based weather sites. Good weather site that takes the raw NOAA data and makes it more user friendly. 5 hour loops Also their iPad app is a must download.

Weather Underground Radar.  Weather site for geeks. Many options available.