Overview
- The UK Health Security Agency issued yellow heat‑health alerts on Wednesday for the East Midlands, East of England, London and the South East, remaining in place until Monday June 22 to warn of greater risk to vulnerable people.
- The Met Office forecasts peak daytime highs of about 32–33°C across southern and eastern England this weekend and into Monday, with humidity likely to make overnight relief limited in some areas.
- A marked north–south split will develop as Atlantic low pressure keeps northern and western Britain cooler and changeable, with forecasters warning of heavy rain and thunderstorms in those regions.
- Central and western Europe is experiencing a much stronger heat episode with many locations reaching the high 30s to above 40°C, a pattern that is helping to push warm air toward the UK.
- Separate from the UK picture, a heat dome in the U.S. Southwest is producing triple‑digit Fahrenheit temperatures and raised wildfire danger in New Mexico, illustrating the wider mid‑June extreme‑heat pattern.