Some pupils may get an early summer holiday this week as brutal 40C temperatures could see schools close. The Met Office has issued a rare red weather warning for Wednesday and Thursday in the face of extreme heat and humidity. Amber warnings have also been issued. The weather forecaster said that in this week’s heatwave , parts of England and Wales are likely to see temperatures exceed 37C in the shade and could even see them rise to 38C to 40C in some places. Many schools have already said