Hemel Hempstead (Hertfordshire) weather

Headline:

Cloudy Start Clearing to Warm Sunny Spells

Today:

A generally cloudy start but most areas remaining dry, with a few showery outbreaks of rain possible to the north of the region at first. Sunny spells developing from late morning and feeling warm during the afternoon. Breezy. Maximum temperature 25 °C.

Tonight:

Clear spells and variable cloud expected overnight, perhaps becoming mostly cloudy towards dawn. Most areas remaining dry with winds falling light and temperatures feeling mild to warm. Minimum temperature 16 °C.

Wednesday:

Sunny spells and variable cloud on Wednesday, with a risk of showers developing in the afternoon, perhaps turning thundery overnight. Feeling very warm and humid. Maximum temperature 27 °C.

Outlook for Thursday to Saturday:

Outbreaks of rain or showers are possible throughout this period, these heavy and perhaps thundery at first on Thursday. Breezy at times but temperatures generally warm or very warm.

Weather conditions are expected to be remain changeable through this period, as a series of Atlantic low pressure systems pass to the northwest of the UK. These will tend to bring some occasional rain or showers, most frequent in northwestern areas where it may also be rather breezy or windy at times. Whilst some rain or showers will be possible across the south and east, here longer drier spells are more likely, under the influence of higher pressure. There is also the chance of some occasional very warm, perhaps locally hot weather, as south or southwesterly winds allow brief bursts of hotter air to encroach from the continent, but probably fairly short-lived and perhaps also accompanied by a few thunderstorms at times.

A continuation of changeable conditions is most likely for the first part of July. The wettest and windiest conditions most likely towards the northwest with a risk of some heavy rain at times, especially over hills. Southern and eastern areas are most favoured for longer drier and more settled spells, although even here some occasional rain or showers will be possible, perhaps thundery. There are signs of more widely settled weather during the second half of July, however this signal is very tentative. Temperatures are expected to be above average for most areas, especially towards the southeast where there will be an ongoing chance of some very warm or hot conditions at times.