Balmy temperatures of up to 19C are predicted in Tayside this week by weather forecasters.
The unseasonal highs – expected as a result of warmth sweeping in from North Africa and the continent – are well above the October average for the region of about 12C.
But residents are being urged to make the most of it with heavy downpours and a chillier feel expected from Friday onwards.
Forecasters say the mercury could hit 19C today.
That’s before wet and windy weather hits the region over the weekend, with temperatures expected to return to the annual average of 12C or 13C.
Dundee enjoyed its sunniest summer of the 21st Century in 2018, with an average temperature of 15C and 638 hours of sunshine between June and August.
Met Office forecaster Helen Roberts said: “We’re going to get some pretty warm weather around midweek, particularly on Wednesday.
“As far as we can see there’s going to be temperatures between 18C to 19C on that day with some warm weather and sunshine around. The average weather for October in this part of the world is around 12C.
“Into the weekend, however, it’s going to be a lot cooler and we’re actually expecting quite a lot of rain for this area and some windy conditions as well.
“There’s an area of low pressure that will be entering the UK around Friday which will affect a large part of the country.”
Dundee enjoyed a similar Indian summer last year, with temperatures of about 16-17C in the early part of October thanks to warm air pushed up from Spain.
Ms Roberts added: “I don’t think we will be seeing any weather similar to Wednesday for the rest of the year.
“This might be as warm as it will get. We’ve got a warning out for the western part of Scotland but it may not be as severe in the eastern sections.”
The Met Office has issued a severe weather warning for north-west Scotland on Friday when stormy conditions threaten travel chaos and damage to buildings.