Weather models indicate temperatures in Northern Ireland could drop to -1C around March 27. A cold air mass from the east may bring snow to parts of the UK, including Northern Ireland, from March 26 to 28.

Snow is projected to form over Europe and the North Sea on March 26 before moving west. Maps show potential snow across northern Scotland to southern England by midday that day. Flurries could persist into March 27, with coverage from Bristol to East Anglia by 6am.

Intense snow rates might reach four inches per hour in some areas. On March 28 at midday, a snow band could stretch along eastern UK regions from Kent to Aberdeen. The Met Office notes colder conditions may develop late March into early April, with frost risk.

The forecast for March 29 to April 12 points to blocked weather patterns, high pressure north or northeast of the UK, and reduced Atlantic influence. Temperatures may average near normal overall, though colder spells are possible.

Earlier projections mentioned warmer spells, with Northern Ireland slightly cooler than southern England at 16-17C. Recent outlooks also noted wintry showers over hills in Scotland, but no specific snow for Northern Ireland today.