The Met Office is predicting heavy rain from first thing on Saturday morning right through Sunday for various parts of Yorkshire.
In Leeds, the rain starts 6am Saturday and then moves to heavy rain from 9am through to 9pm - 12 hours of downpours.
On Sunday, a cloudy start will give way to bursts of rain, although it will be less wet than Saturday.
Temperatures will only peak at about 22 degrees C - much cooler than things have been this week.
In Sheffield, it's a very similar picture - heavy rain will start a little earlier on Saturday though, with the worst of the conditions hitting from 7am through the entire day to 4pm, followed by another heavy rain shower at 9pm.
On Sunday, a mix of clouds and bursts of rain, but less heavy than Saturday.
On the coast, in areas like Scarborough and Hull, conditions won't be as sodden, but a yellow weather warning for rain will still be in place.
What the weather warning from the Met Office says
Heavy rainfall may lead to flooding in a few places and travel disruption.
Where flooding occurs, there is a slight chance of delays or cancellations to train and bus services
Spray and flooding could lead to difficult driving conditions and some road closures
There is a small chance that homes and businesses could be flooded, causing damage to some buildings
There is a small chance of fast flowing or deep floodwater causing dangerous conditions
The Hour by hour forecast
9am Heavy rain - 80% chance of big downpours
10am light rain
12 noon rain and some sunshine
3pm-7pm rain with some sunshine
9pm Heavy rain
12 noon 20% chance of rain
4pm Rain and some sunshine through to 9pm
The forecast in full
A wet day to come across the region. Rain will continue through much of the day, heavy at times bringing the risk of localised flooding. Much cooler. Maximum temperature 22 °C.
Outlook for Sunday to Tuesday:
Further heavy rain through Sunday could again bring localised flooding. Turning drier thereafter with sunny spells and just a few showers. Temperatures nearer average than of late.