St James's Park (Greater London) weather

Headline:

Warm and humid with heavy thundery downpours overnight and Saturday.

This Evening and Tonight:

A fine end to the day, with some very warm sunshine. Cloud increasing from the south overnight, with areas of heavy and thundery rain moving northwards during the early hours of Saturday morning. A rather warm and muggy night. Minimum temperature 18 °C.

Saturday:

Turning slightly cooler and unsettled with widespread, often heavy and thundery rain or showers lasting much of the day, likely clearing into the evening to give another muggy night. Maximum temperature 25 °C.

Outlook for Sunday to Tuesday:

Remaining unsettled, with a mixture of sunny spells and rain or thundery showers throughout the period. Feeling warm in any sunny spells and breezy at times towards the coast.

Overall a rather more changeable pattern of weather through this period, compared to much of the summer thus far. Wednesday will likely see a continuation of heavy, perhaps thundery showers, although the focus may be more across the north and east by this stage. Thereafter, a general westerly or north-westerly regime looks to become established, with occasional weather systems moving in from the Atlantic. This means further rain or showers and breezy conditions at times, especially in the northwest. This will be interspersed with some drier, sunnier periods. Temperatures are expected to be close to or a little above average for most of the period. This broad pattern is likely to continue through to the end of July.

The rather changeable pattern will likely continue through into the start of August with spells of rain or showers mixed in with some drier, brighter days. However there are signs that high pressure may become rather more dominant, which could bring more in the way dry, settled weather more widely as we progress further into the month. Temperatures will likely continue to be above average overall, with the possibility of very warm or hot spells developing period, especially further south and east.