After the mercury clocked 16 degrees Celsius at 9.40am on Monday morning, wind gusts picked up and storm clouds rolled in, in line with the Bureau of Meteorology's latest forecasts.

The BoM suggest there's a 95 per cent chance of rain, with heavy falls possible.

The forecast adds there's a chance of a gusty thunderstorm during the afternoon, with winds hitting 30 km/h before shifting in the evening.

Wind gusts have already clocked 60 km/h at 11am, according to weatherzone's observations of the last 24 hours.

In line with that, the sheep graziers warning says cold temperatures, rain and showers and south-westerly winds are expected on Monday and Tuesday.

Areas likely to be affected include the Central Tablelands and the Central West Slopes and Plains, and with that warning there is a risk of losses of lambs and sheep exposed to these conditions.

Tuesday's top temperature is expected to be just 5 degrees Celsius, with snow predicted for the higher spots of the region, like Mount Canobolas.

As of 12.30pm on Monday, August 23, Mount Canobolas was still open.

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