Sperrin Mountains (County Tyrone) weather

Headline:

Mainly dry, bright south, rain north later. Becoming breezy.

Today:

Bright and frosty with mist or fog patches in the south but cloudy in the north and east at first. The day will be dry with cloud spreading to the south and rain to northern coasts later. Becoming breezy later. Maximum temperature 5 °C.

Tonight:

Dry in the south during the evening. Bands of rain then pass south from later in the night. The westerly breeze will turn northwesterly and strengthen along the coasts later. Minimum temperature 1 °C.

Thursday:

A cloudy day with the occasional bright spells interspersed with a few showers, these becoming wintry in the east towards the evening. Windy along the coasts. Maximum temperature 5 °C.

Outlook for Friday to Sunday:

A band showery rain, wintry on the hills, passes south early Friday. Snow showers will follow through the rest of this period when drier in the south. Breezy.

Cold northerly winds dominant across the UK in the first week of January. These will bring wintry showers (often of snow) to many coastlines (and areas just inland of these) that are exposed to onshore winds. Day-to-day changes in wind direction will change the places most exposed to the showers, but many inland locations across central and southern areas will remain mostly dry but cold - some more coherent bands of rain, sleet and snow working south at times. Into the second week of January slightly milder conditions will attempt to move in from the west, with a risk of further snow on the leading edge of these turning to rain. Colder regime more likely to the north with average to just below average in the south.

Whilst confidence in details is low, by the start of this period the transition back to westerly winds bringing Atlantic weather systems into the UK is expected to be complete, with temperatures most likely recovering to around or just below average. There is perhaps a weak signal for slowly evolving weather patterns to be more favoured than normal, such patterns increase the chances of frost and fog above normal by night.