Forecast reveals whether the capital's dry spell will end this weekendLondon is set for another hot day before a brief change arrives on Sunday, bringing the chance of light showers. But with weeks of exceptionally dry weather raising wildfire concerns and stretching water supplies, will the rain be enough to make any real difference? For those hoping this weekend's showers will finally break London's prolonged dry spell, the forecast offers only limited encouragement. High pressure has dominated the UK's weather for several weeks, delivering above-average temperatures and exceptionally dry conditions. The short-lived spell of unsettled weather is unlikely to make much difference to the capital's ongoing dry spell.