Temperatures were steady at around 23C on Monday afternoon in Settle, Ilkley and Bradford, while people in coastal areas such as Whitby, although cooler, still enjoyed 18C.
Forecasters are now warning these temperatures will rise on Tuesday, and we can expect the rest of the week to follow suit.
Those in Wakefield should expect the highest temperature tomorrow, with 25C predicted, with Harrogate, Pontefract and Halifax not fare behind on 24C.
A Met Office spokesperson said: "Warm sunshine developing widely through Tuesday.
"Mostly dry Wednesday and Thursday with low cloud and sunny spells."
A clear night for most areas, but some low cloud and mist will spread back inland, with fog developing in places. Winds remaining light. Minimum Temperature 7 °C.
Warm sunshine developing widely during Tuesday, with afternoon thunderstorms expected, these mainly later in the day with torrential downpours in places. Winds mainly light, but gusty near storms. Maximum Temperature 25 °C.
Outlook for Wednesday to Friday:
Mostly dry Wednesday and Thursday with low cloud and sunny spells, perhaps a few showers in places. Warm inland but cooler near coasts. More persistent rain likely by Friday.