Temperatures are predicted to soar as high as 40 degrees in some parts of the region, with the Bureau of Meteorology (BOM) issuing a warning to the community.

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“From Thursday temperatures will again climb sharply … peak temperatures will probably hit on Saturday and Sunday,” BOM NSW/ACT manager of weather services Jane Golding said.

Current forecasts predict that by Australia Day severe heatwave conditions will impact large areas of the Central West.

“We saw clearly from last week’s heatwave the impacts of this sort of weather on peoples’ health, when you combine that with a weekend of major outdoor events and the last long weekend for a while there is reason for some concern,” Ms Golding cautioned.

This event will be broadly similar to last week’s heatwave, albeit with localised differences.

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Already this week daytime maximum temperatures on Tuesday were close to 45 degrees in large parts of western NSW, while temperatures did not drop below 27 degrees for many of those locations on Monday and Tuesday nights.

Ms Golding said the Bureau of Meteorology would will work closely with health, emergency services, lifesavers and event organisers to ensure the community was aware of these conditions.

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“We are urging people to keep an eye on the forecast over the coming days, so they can plan their days, enjoy whatever they're doing and stay safe at the same time,” Ms Golding added.

The current conditions will also see elevated fire dangers over coming days and could trigger thunderstorms in some areas.