I have it set to Update weather data every 2 hours (or whatever, I have tried different settings)
Right now my home page has icons for Saturday, Sunday, Monday and Tuesday
and the Saturday icon is a partly sunny
It is currently almost 5pm on Sunday!
No updates to the weather data or displayed icons since Saturday afternoon

- just hit the manual refresh icon and all icons are now updated.

When I had OMWeather installed before version 0.16 for n800, I had it working and auto refreshing fine, it just had the n800 related gui quirks.

--- Update ---
I recently reinstalled the OS and all programs and now the refresh every 2 hours is working