Using the WXNOW.TXT file hasn’t yet worked in WinAPRS though it appears as a setup option in WinAPRS 2.6.1, the latest version.
The WinAPRS author Keith Sproul told me (on March 9), “This is now fixed, we have to get a new version out. It should be very shortly.”
FWIW.
73 (ham-speak for “Best Wishes!”), Cap KE6AFE