Sunday
An area of rain is expected to pass west to east across Ireland, England and Wales through the morning. Heavy for several hours through the morning for western hills. Clearing to leave sunny spells and scattered showers. As pressure briefly builds from the west showers tend to ease during the afternoon. Cloud builds from the southwest again later and rain spreads across Ireland and into Northern Ireland and the southwest UK through the evening. Brisk winds around southern coasts. Cool in the north with hill snow for Scotland, highs at 4 to 7C. Mild in the south, highs at 11 to 13C.

Sunday night
An area of rain and snow spreads across Ireland, Northern Ireland and into central and northern parts of England and southern Scotland through Sunday night and into Monday morning. Showery rain spreads eastward across Wales and southern England while it's a mostly dry but cloudy nigth for northern Scotland. Through Monday morning another band of heavy rain arrives over Wales. Overnight lows at -1 to 4C for most, 6 to 10C across southern and southwestern England and southwest Ireland.

Monday
A deep area of low pressure moves in from the west, with further rain focused in the north & west. Wintry in the north, with a spell of hill snow, perhaps to quite low levels in the Highlands. Windy with a risk of severe gales for west and northern regions. Much milder again in the southeast and largely dry here with highs at 4 to 12C.
 

Tuesday
A general west to north-westerly pattern prevails on Tuesday. Turning cooler for all as a cold front passes southeastwards with a spell of rain clearing. Areas of wintry showers follow into western areas with a mix of rain, sleet, snow and hail. Staying mostly dry and bright to the east. High temperatures at 3 to 9C.