A warning over heavy rain for Saturday (July 19) has been issued across the Horsham district.
After light showers overnight on Friday, more are forecast throughout Saturday, some very heavy and mixed with thunder, although the temperature will remain in the low 20s deg C.
Sunday (July 20) could see some light showers late in the day, although there are no warnings for that day.
However, the rest of this week is due to be very sunny with temperature hitting at least 26degC tomorrow (Thursday) and the first part of Friday.
The longer range Met Office forecast is for spells of warm weather with occasional showers.