Rain Caddy - Should You Water Your Lawn Today?
John, a previous student of mine, made this weather-aware application and entered it in the Apps 4 Climate Action contest.
Enter your (Canadian) address to see the average rainfall in your area over the last 7 days. John’s site uses data from Environment Canada’s 1079 weather stations. (See the Rain Caddy About page for a map of all these stations.)
Open Data for the win.