[i18n] need help in weather translate

[Dmitriy MiksIr]

The weather strings consists strange (for me) constructions.
For example
_("AM Light Rain"); and _("PM Light Rain");
Is mean what rain will be accordingly at forenoon and at afternoon?
But what is mean
_("Rain Early"); and _("Rain Late");
Rain at morning/evening?
Then,
_("Clear"); _("Clearing Late"); _("Clouds Early"); _("Cloudy");
where is "Clearing Early" and "Clouds Late"? =)