Two occupants of a car involved in a crash in the early hours of Thursday morning have walked away unscathed.

Emergency services were called to the scene on the Kamilaroi Highway near Curlewis at about 3.15am, but the middle-aged female driver and her passenger had only minor injuries and weren't taken to hospital.

Sergeant Terry Melville of Gunnedah police said speed and not driving to wet conditions were factors in the accident occurring.

He said alcohol wasn't a factor.

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The Australian Rail Track Corporation (ARTC) were called to remove the car, but as it wasn't in the way of passing trains the removal wasn't urgent, Sgt Melville said.

Curlewis received 50mm of rain on Wednesday and bare paddocks flooded between the small town and Gunnedah.

It wasn't just Curlewis that got a drenching with towns across the North West copping some rain.

Over at Mullaley, 45mm was recorded by the Bureau of Metereology (BOM), 35mm hit Gunnedah airport, and 30mm came down in Tambar Springs.

Areas of Boggabri also saw plenty of the wet stuff. The BOM recorded 39mm, but other areas only had 16mm.

Werris Creek recorded much less at 18mm, and Narrabri airport measured just 6.6mm.

In Quirindi, there as 21mm of rain, while Tamworth had 43mm, and Nundle had 32mm.

For now, it looks like the rain has dried up around the region.

There is a minimal chance of rain for the rest of the week in most areas.