This chart will also show that the accuracy of the forecast is usually better as you get closer to the actual day. A seven day forecast will not be as accurate as a 3 day forecast, most of the time. You can still blow it like I did for the low temperature for Thursday night. I said it would be 62, when it actually dropped to 51.
What I am happy about is the forecast for Friday and Saturday that was made on Friday turned out really well. That gave not only the competitiors an accurate forecast, but the fans as well.