The highest expected temperature tomorrow is 21, .

Today's maximum will be topped on Monday, but cooler conditions are expected on five of the next six days.

The chance of rain tomorrow is 5 per cent.

There is a similar chance of showers Sunday when the Bureau of Meteorology forecasts a slim (5 per cent) chance of rain.

The UV index is predicted to be 3. There is a moderate risk of harm from sun exposure. Experts suggest covering up, using sunscreen outside and avoiding the sun around noon.

Winds will be north-northwest around 13 km/h in the morning shifting to west-northwest around 13 km/h in the afternoon.

Details for the next six days:

Saturday, May 24: Mostly sunny. N/NW winds Min - 11. Max - 21.

Sunday, May 25: Mostly cloudy. NW/NE winds Min - 11. Max - 20.

Monday, May 26: Mostly cloudy. Late shower. NE winds Min - 10. Max - 22.

Tuesday, May 27: Mostly sunny. Fresh NW winds Min - 13. Max - 18.

Wednesday, May 28: Mostly sunny. SW winds Min - 9. Max - 18.

Thursday, May 29: Mostly cloudy. SW/S'ly winds Min - 9. Max - 19.

The previous Parramatta weather article can be viewed here.