Watford looks set for a mini heatwave towards the weekend, with temperatures rising to 30C.

It looks like summer may finally be here after well-above-average rainfall figures in the first half of the month, including a weather warning for rain on Tuesday evening.

Tomorrow (Thursday, July 18), the Met Office predicts that temperatures will hit 27C at around 4pm to 5pm before reaching 30C in the early afternoon on Friday.

Peak heat is expected to drop slightly to 27C again on Saturday before milder conditions return on Sunday, peaking at 23C.

Met Office spokesperson Nicola Maxey said night-time temperatures could stay in the low 20s for parts of south-east England – officially classified as “tropical nights” if they do not drop below 20C – with there being health implications for the elderly or infirm.

Summer in Cassiobury Park.Summer in Cassiobury Park. (Image: Rebecca Yu/Watford Observer Camera Club)

She said there was still uncertainty over how soon the milder conditions would come in, with the possibility that the South East could retain its heat a little longer than elsewhere.

The Met Office spokesperson said England had 97 per cent of July’s average rainfall between July 1 and 15. London specifically has had 154 per cent of its average for July already.

See the Met Office predictions for Thursday, Friday, and Saturday below

Thursday temperature forecast breakdown:

  • 1am – 15C
  • 7am – 15C
  • 10am – 18C
  • 1pm – 23C
  • 4pm – 26C
  • 7pm – 25C
  • 10pm – 20C

Friday temperature forecast breakdown:

  • 1am – 18C
  • 7am – 18C
  • 10am – 24C
  • 1pm – 28C
  • 4pm – 29C
  • 7pm – 27C
  • 10pm – 22C

Saturday temperature forecast breakdown:

  • 1am – 19C
  • 7am – 18C
  • 10am – 22C
  • 1pm – 25C
  • 4pm – 25C
  • 7pm – 23C
  • 10pm – 19C