^
I wouldn't worry about it...
there are only two options to forecast here - rain or no rain.
and it's july in edmonton so there is probably a 50/50 chance of any weather forecast four days out being right.
which means if the forecast is for rain, there's a 50 percent chance it will rain and a 50 percent chance it will be nice..
and if the forecast is for it to be nice, there's a 50 percent chance it will be nice and a 50 percent chance it will rain.