Much of NSW will experience a string of dry days and frosty nights at the end of this week as a high pressure system slowly drifts over the state.

Despite light showers falling in pockets of southern and eastern NSW on Wednesday and Thursday, most of the state's parched inland districts are having yet another dry week.

Dubbo's only rain so far this month was 0.6mm during the 24 hours to 9am last Sunday. Further north, Tamworth has only collected 0.8mm so far during July, which follows their driest June in 18 years.

Many areas of far western NSW haven't received any rain so far this month. This includes Broken Hill, which just registered its driest first half of a year on record.

Unfortunately, the high pressure system passing over NSW during the coming days will keep any significant rain-bearing systems at bay during the remainder of this week.

In addition to the dry weather, clear skies across most of southeastern Australia will cause cold and frosty mornings across inland areas of NSW in the coming days.

Dubbo's long-term average minimum temperature during July is about three degrees, although the mercury could dip below zero each morning until at least Monday. Coonabarabran could experience overnight lows of minus four to minus six degrees during this time.

There are indications that a cold front could cause rain in parts of southern and central NSW around Tuesday and Wednesday next week. However, it's still too far away to know with confidence how much rain this system will bring, and where it will fall.