Southeast Queensland is in for an uncomfortable end to the year, as a low pressure trough causes hot, humid and thundery conditions. Between today and Saturday, days will be characterised by sunny, and sticky mornings, before clouds build during the day and bring the risk of showers and thunderstorms. Today, thunderstorms will be most likely near the New South Wales Border and along the ranges. However, from tomorrow storms become a significantly higher risk across much of the region. In and around Brisbane on the coastal stretch, daytime temperatures will reach in the low 30s, while around Ipswich and Gatton they will push into the low-to-mid 30s. However, high humidity levels will make this feel even more uncomfortable. Sunday could be in a league of its own though as a very hot air mass moves into the region. Around Ipswich and Gatton, it is likely to get as hot as the low 40s as westerly winds push in. Brisbane is expected to hit as high as 37 degrees, while the Sunshine Coast and Gold Coasts will push into the mid 30s, although there is the risk that westerly winds could be strong enough to delay or hold out the seabreeze all together making it even hotter. Thankfully, there is the chance of some relief during the afternoon and evening due to the risk of thunderstorms. More significantly though, a gusty southeasterly change will move through during the evening, bringing much cooler conditions on Monday. The cooler weather will last little more than a day though, with heat expected to return to the region from Tuesday.