Metoffice long-range forecast reflects that uncertainty....
3rd - 12th February
Changeable conditions at first, with spells of mild, wet and windy weather punctuated by drier, cooler interludes. The northwest is likely to see the heaviest and most frequent or most persistent rain, while the southeast will tend to be drier overall. Largely cloudy with the best of any sunshine in the east. There is a chance colder conditions could then become established more widely during the first full week of February, with increased chance of wintry weather, especially northern and central UK, should Atlantic cloud and rain be forced to track across the south of the country. Equally, similar conditions to the start of the period could well prevail; confidence is low at this range in the weather type which will become most dominant.
13th-27th February
Following on from earlier in the month, either the period will start changeable with temperatures overall around average and a northwest to southeast split in conditions, or colder conditions will have become established, mainly across the north. Either way, through mid-February there is an increasing likelihood of more settled conditions with winds arriving from the north. This would increase the chance of some colder spells, with a greater likelihood of wintry conditions at times, particularly in the north and east.