Forecast updated at 8:50 am EDT on Thursday 5 December 2013.
The passage of a cold front and associated prefrontal trough will dominate the weather in New South Wales today. Warm conditions with gusty north to northwesterly winds are expected ahead of the front in the northeast of the state, with showers increasing to rain with the chance of thunderstorms. A cold and windy southerly change follows behind the front with rain easing to showers, falling as snow in the south above about 1600 metres and lowering to 1200 metres by the evening. A steep upper trough following the front will result in further thunderstorms development in the southeast Thursday afternoon, where small hail is possible. Conditions will clear on Friday as a high pressure ridge extends across the state into the weekend but will result in unseasonable frost in the southeast in the wake of the cold outbreak. The high pressure system will continue to dominate the weather over the weekend, with northerly winds bringing a return to warm conditions over the state on Sunday as the high moves over the Tasman Sea.
Forecast for the rest of Thursday
Cloudy. Scattered showers from the early morning, falling as snow above 1500 metres from the early afternoon. The chance of thunderstorms from the late morning until evening. Small hail possible in showers and thunderstorms. Winds westerly 20 to 30 km/h turning southwesterly 15 to 25 km/h in the evening. Daytime maximum temperatures between 11 and 16.
Fire Danger - Australian Capital Territory: Low-Moderate
UV Alert from 8:50 am to 5:00 pm, UV Index predicted to reach 11 [Extreme]
Friday 6 December
Sunny. Patches of light frost early in the morning. Winds west to southwesterly 15 to 20 km/h tending south to southwesterly in the late afternoon then becoming light in the evening. Overnight temperatures falling to between 1 and 4 with daytime temperatures reaching between 17 and 22.
Saturday 7 December
Mostly sunny. Light winds. Overnight temperatures falling to between 3 and 6 with daytime temperatures reaching 22 to 27.
Sunday 8 December
Partly cloudy. Light winds becoming northwesterly 15 to 25 km/h during the morning. Overnight temperatures falling to around 7 with daytime temperatures reaching 24 to 30.
The next routine forecast will be issued at 4:30 pm EDT Thursday.