Lamenting weather service options

I once had this project; if I had to do it again, I would have used the farmer's almanac to give projections in conjunction w. NOAA data. You see, the issue was that Yahoo Weather or noaa only gave 7 days of forecast and the events took longer than 7 days to set up. I had suggested guerilla events but that didn't take. So, my plan is to given accurate 7 day weather and after 7 days, well, who "really" knows. No one has maps for beyond 7 days.