According to www.weatherzone.com.au, which takes its readings from the Bureau of Meteorology's weather station at Orange Regional Airport, the mercury rose a couple of degrees Celsius higher than usual for the month.

The average maximum temperature for April between 1996 and 2017 was 18.7 degrees, but this year it was 20.8 degrees.

The unseasonable warmth was also a factor at night, with the typical minimum temperature spiking at 6.6 degrees, a full mark above the 20-year average.

Unsurprisingly, the monthly figures also reflected lower-than-average rainfall, and by a considerable margin.

Only 44.9 millimetres was recorded in the airport's rain gauges, more than 100 millimetres down on the 1996-2017 average of 145.

That data continued the 2019-long trend of lower-than-average rainfall in the Orange region, with the total of 178.8 millimetres recorded at the airport well down on the long-term average of 255.6.

There is, however, some slight cause for optimism in weatherzone's seven-day forecast.

There is an 80 per cent chance of up to five millimetres of rain on Thursday, and a 90 per cent prospect of up 10 millimetres for Friday.

Orange is on the lower end of the spectrum of the Central West's predicted falls for the back end of the week.

The wettest location will be Cowra, which could see up to 30 millimetres, while there was 25 millimetres is predicted for Dubbo, Forbes, Mudgee, Wellington and Young, and around 20 millimetres expected in Nyngan and Parkes.

It will likely be a little drier in Bathurst, Blayney and Oberon, where 15 millimetres is forecast, while just five millimetres was predicted to fall in Lithgow.

According to weatherzone's Ben Domensino, those likely falls are commensurate with the soaking rain tipped for large parts of south-eastern Australia this week.

A large upper-level low pressure system interacting with tropical moisture was likely to produce much-needed rain.

Mr Domensino predicted a broad band of rain and storms would spread further east across NSW and southern Queensland on Friday and Saturday, before clearing on Sunday as the system moves out into the Tasman Sea.