Unload Omweather widget.
And run in xterm the following commands:
gconftool-2 --set /apps/maemo/omweather/icons-layout --type=int 0
gconftool-2 --set /apps/maemo/omweather/alpha-component --type=int 45
gconftool-2 --set /apps/maemo/omweather/days --type=int 3
gconftool-2 --set /apps/maemo/omweather/icons-size --type=int 2
gconftool-2 --set /apps/maemo/omweather/background-color --type=string "#221111"

Load widget and enjoy.

first parameter may be change between 0-9 (5-9 presets view)
second parameter - semitransparency level (0-255)
third parameter - count of day on display (1-10)
fourth parameter - size of icons (1-5)

http://talk.maemo.org/showpost.php?p...9&postcount=94

From the author.