My weather widget seemed to update overnight. So I'm wondering if the update settings are whacked out. The only setting they let you mess with is Fahrenheit or celsius, lol. A Google search led me to an Old Post that thought the weather updated once per hour. It's obviously not doing that. So I don't know, I like the widget but if it doesn't update it's not much use.
EDIT: It's now about 10 hours later and my weather widget seems to be updating better. Not sure what the update interval is but I'm noticing it's more accurately displaying the current conditions and correct temp. Maybe a server side fix? Don't know but pleased to see.