By the time summer officially begins on Saturday, Canberra is already likely to have sweltered through its hottest day since 2011.

As Canberra received cooling rains on Tuesday night, weather forecasters said the city was on track to experience the hottest November in three years.

Weatherzone meteorologist Brett Dutschke said the capital will hit a top of 35 degrees or higher on Friday.

''Thursday, Friday and Saturday are going to be the humdingers,'' Mr Dutschke said.

''The day will start off a fairly humid warmth but once you get into the mid-afternoon it'll become a drier heat and the northerly winds will be picking up a bit.''

A maximum temperature of 33 degrees was predicted for Thursday, 35 degrees for Friday, and 33 degrees on Saturday.

''If Canberra does get to 35 degrees then it'll be the hottest day since February 2011,'' Mr Dutschke said.

He said that as the temperature goes up, the danger of fire might also increase.

A spokesman for the Emergency Services Agency said that although the weather was expected to be hot, there was no indication at this stage that the fire danger levels would reach the extreme rating this week.

In the approach to the hot weather, the ACT Rural Fire Service plans to conduct two hazard reduction burns on Wednesday afternoon at the Belconnen Pony Club in Macgregor and the Gungahlin eucalypt plantation.