Several of the below sites lack information on for instance launch
coordinates, which in turn are used to generate the "Weather:" links.
You can help out by finding such information and reporting them back.
If you
get a GitHub account, you can even
edit
the underlying database (and all other pages) directly in the browser.
The "Weather:" links for each site are based on latitudinal and
longitudinal coordinates of the launch.
The National Weather Service generates forcasts for a large number of
retangular-shaped "forecast areas" place in a grid all over the US.
The size of these areas is 2.5-by-2.5 km.