The Met Office has issued warnings for potential snow in the Northern Isles of Scotland as temperatures across the UK are set to plunge. This evening, conditions could turn cold, with forecasts indicating lows of -5C in northern regions and 0C in the south. While most areas are expected to remain dry today, there will be variable cloud and sunny spells, with some showery rain in the north. Tomorrow, temperatures will again be below average, with northern areas facing lows of -4C and southern regions -2C. Looking ahead, the weather is expected to become warmer later this week, with Thursday starting off largely dry but with increasing chances of showers by Friday and rain possible in the south on Saturday.