Snow has been forecast for Scotland's highest mountain peaks on Wednesday, according to the Met Office.
Forecasters also said some of the most sheltered Highland glens could have frost on Thursday morning after temperatures dip to 3C.
The weather comes about a week after temperatures rose to 30C around Inverness and the north west Highlands.
BBC Scotland weather presenter Gillian Smart said the frosty conditions should be short-lived.
She said: "The latest from the Met Office in Aberdeen is that we could indeed see a touch of grass frost in some of the most sheltered Highland glens on Thursday morning.
"It'll be very short-lived, mind you, as the Sun's up so early.
"Tomorrow, there could be some sleet/wet snow over the highest mountain peaks.
"Daytime temperatures on Wednesday and Thursday will be 13 to 16C, the average for the time of year is 15 to 18, so below average but not a rarity to see temperatures this low in July."
She added: "Certainly rubbish summer weather, though, and bearing in mind last Wednesday we hit 29.4C. What a difference a week makes."
