Harrow (Greater London) weather

Headline:

Heavy showers and thunderstorms this weekend with warm sunny spells.

Today:

The cloud will rapidly break up into warm sunny spells during the morning. However some heavy thundery showers will soon follow in the afternoon, particularly in the west. Breezy. Maximum temperature 24 °C.

Tonight:

Showers tending to fade by Friday evening leaving late sunshine. Low cloud likely spreading across northern and western parts overnight. Thundery showers may arrive over the far southeast after midnight. Minimum temperature 14 °C.

Saturday:

Early showers pushing northwards. Cloud breaking to sunny spells with heavy, thundery, showers then developing as temperatures rise. Showers most frequent further west. Heavy rain arrives into southern counties overnight. Maximum temperature 23 °C.

Outlook for Sunday to Tuesday:

Heavy, locally thundery rain, expected to affect much of the region throughout Sunday and Monday. Rain clearing east Monday afternoon, becoming dry overnight. Bright spells and isolated daytime showers Tuesday.

Some rain across southeastern parts, lighter and not as extensive as previous days and tending to ease away to the southeast by the end of Tuesday. Elsewhere, generally settled conditions prevailing for most places, although with a band of cloud and some rain moving across the far north, particularly the northwest and a few showers moving into western parts further south. Temperatures likely a bit cooler than previous days. A transition to a generally more unsettled, mobile westerly pattern is most likely by midweek and beyond, with spells of wind and rain moving into many areas, but more especially in the south. Towards the end of the week, much cooler, showery conditions are expected for many parts with the north and west likely being a focus for these showers.

Typical autumn weather will probably affect the UK with a mix of weather types through the first half of October. Periods of unsettled conditions, with wind and rain at times, will likely be interspersed with shorter spells of calmer and drier weather. Overall, wetter than average conditions are expected during this period, especially in central and southern areas. Temperatures are most likely to be close to or slightly above average overall, although some cooler spells are possible at times.