Thursday saw the hottest temperature recorded so far in Northern Ireland during 2015.
Government weather agency The Met Office said that Castlederg saw temperatures hit 21.2 Celsius at around 4pm.
The second warmest location was Derrylin, with 20.3C at around 3pm, while the townland of Thomastown outside Enniskillen hit 20.1C. Belfast reached 19.7C at 3.15pm.
Forecaster John Mitchell said that Friday will likely be less warm, with more cloud and temperatures in the high teens, and that Saturday’s overall temperatures are likely to be around the mid-teens.