After looking more closely and some experimentation I *think* I may have fixed it. I thought perhaps the $SITE['showSnowTemp'] may require F although it specifically states C so I changed it in my settings-weather.php to 32. No luck. Then I saw an entry on the ajax-dashboard.php for $SITE['showSnowTemp'] and changed that from 4 to 32 as well and my site is now displaying snow data vs rain (current temperature is 12ºF). I'll have to wait (a while it appears by the forecast) to see if it switches back to rain whenever we get back above 32ºF.