Tamworth records coldest days of 2020, but predicted sub-zero nights still to come

But despite dramatically wetter months through summer and autumn, the region's dams remain near empty.

The Bureau of Meteorology recorded 21.2mm of rain at the Tamworth Airport on Friday. The region's dams received even more, with 36mm reportedly falling in the Peel river catchment.

Meanwhile daytime temperatures were held below 15 degrees for the first time in 2020 as the city recorded its mildest maximum of the year.

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But the region did not endure anticipated sub-zero overnight conditions, even in the New England highlands.

Armidale recorded a low of 2.5 degrees, with Glen Innes recording a low of 1.9 degrees. In Tamworth, the low was 6.8 degrees on Friday, and 5.7 degrees on Sunday.

In Gunnedah the mercury hit 4.2 overnight on Sunday morning, with daytime temperatures of 15.8 and 16.2 degrees. The town recorded just 11.4mm of rain on Friday.

The city has recorded 480mm of rain in 2020 according to the BoM.

It's approaching double last year's record dry of just 263.6mm of rain.

But the region's dams remain relatively dry.

The Chaffey dam was just 13.8 per cent full on Sunday and rising, according to Water NSW.

Split Rock Dam was 4.6 per cent full. It was also rising.

Keepit was 13.8 per cent full and stable.

Inverell's massive Copeton dam was 12.7 per cent full.

Tamworth will stay on Level 5 water restrictions until Chaffey is 25 per cent full.

The BoM predicts overnight temperatures to remain in single digits, but predicts the days to warm up, with a top of 25 on Wednesday.

The Bureau's long-term forecast gives Tamworth a 60 per cent chance of above-average rainfall over the next three months.