However, the good news is they won't be sticking around all week.

On Tuesday, January 12 the Bureau of Meteorology predicted the mercury in Leeton would reach 40 degrees, followed by 42 on Wednesday.

It was a similar story for Griffith with the exact same temperatures forecast for the two days.

Residents can they expect to be given a reprieve for the remainder of the week, with Thursday still a warm 35 degrees in Leeton, but a much more pleasant 29 on Friday and Saturday before 32 degrees on Sunday.

IN OTHER NEWS:

For Griffith, residents there can also expect to wave goodbye to the extreme heat in favour of 35 degrees on Thursday, 30 degrees on Friday and Saturday and 32 on Sunday.

It's good news for the region's cricketers who can expect a weekend of no weather interruptions when they take to the pitch, with no rain on the radar.

It has been a mild start to 2021 across the MIA.

Prior to Tuesday, the hottest temperature recorded in January for Leeton was 37.3 on Monday.

December's hottest day in Leeton shire was on December 27 when the recorded temperature was 39.1.

In November, residents copped an early taste of summer, with four days recording temperatures of 40 degrees or more, while several other days hit the very late 30s.

Griffith's hottest day in January prior to Tuesday and Wednesday this week was also on Monday, when the recorded temperature was 36.8 degrees.

December in Griffith was a similar story to Griffith. It too recorded its hottest day on December 27 when the city clocked 38.9 degrees.

November too was when the heat was felt in Griffith, with 41 degrees recorded on November 21, 41.2 on November 27 and 43.2 on November 28.

Residents have been reminded to take care in the heat and keep an eye on elderly family members, neighbours and friends.

Young children are also susceptible to extreme heat.

The Murrumbidgee Health District recommends avoiding being in the direct sunlight during the peak hot periods of the day where possible, staying hydrated and keeping an eye out for any symptoms that may suggest heat stress among residents of any age.