The latest ECMWF longer range outlook came out today and it's not too dissimilar to what we looked at back on Friday. Currently August is looking overall drier than average though the first week currently has the best chance of seeing any substantial rainfall. See the chart on the below

There will be some rain about today, but only in the north. See below the latest from the GFS model on it's predictions of total accumulations of rainfall from overnight last night through to this coming evening. Western Scotland will see some persistent and heavy rainfall at times with accumulations