Hi @yansiongyu54
The Dashboard reference is to any URL you assign. The demo data included one for weather underground, they changed some things which results in what you are seeing.
You can try the national weather service, https://forecast.weather.gov/MapClick.php?lat=27.290647500000034&lon=-82.49205999999998#.YLecmKhKhhE, This is a default for Tampa Bay, FL, you could put a local zip code in and copy the URL to make it more personal to the prospect or client.
The information used for Daily Field Reporting is specific to weather services that can return values via API. Those can be obtained by going to the specific weather service, creating a free account and entering the information within Project Management Preferences / Weather Service.
Hope this helps!