Thornhill (Southampton) weather

Headline:

Murky again tonight, likelihood of brighter conditions developing Monday.

This Evening and Tonight:

Remaining overcast and rather mild with mist and areas of fog becoming more extensive overnight. Many places staying dry, although some isolated light rain or drizzle is possible at times. Minimum temperature 7 °C.

Monday:

Extensive low cloud and any drizzle slowly lifting, with brighter spells likely developing during the afternoon. Isolated heavy showers perhaps developing later. Milder, feeling warm in any sunshine. Light winds. Maximum temperature 16 °C.

Outlook for Tuesday to Thursday:

Breezier Tuesday, with bright spells possible ahead of overnight rain. Wednesday, morning rain clearing, then brighter with isolated, blustery showers following. Windier on Thursday, perhaps with some rain.

Changeable through much of this period, as Atlantic frontal systems pass close to or across the UK at times. These will bring some occasional spells of rain or showers, most frequent in the west and northwest, and perhaps accompanied by strong winds. However, there should also be some drier interludes under transient ridges of high pressure, with longer dry periods most likely in the south and east, though even here some wet weather is likely at times. Temperatures will be near-average for the period as a whole, but with some shorter-duration colder interludes at times when frost and hill snow will be possible. Later in the period there may be a transition to more blocked or slower evolving weather patterns, though confidence in the detail of this is rather low.

More blocked, or slowly evolving, weather patterns are favoured for late March into early April, with high pressure probably building to the north of the UK. Whilst confidence is rather low in how this will influence the weather across the UK, this tends to lead to a more prolonged period of a certain weather type, be it settled or unsettled. In any case, a reduction in Atlantic-dominated weather patterns is favoured, although some wet weather remains possible at times, more especially in the south and east whilst northwestern areas tend to be drier than average. Temperatures will probably be close to average for the period as a whole, but there is an increased chance of some colder conditions developing for a time with a risk of frost.