The highest expected temperature tomorrow is 23, which is three degrees lower than today's max.

Warmer conditions are expected on four of the next six days, with the mercury climbing above today's maximum on Saturday, Sunday, Monday and Tuesday.

The chance of rain tomorrow is 40 per cent.

Showers are less likely Friday when the Bureau of Meteorology forecasts a slight (20 per cent) chance of rain.

The UV index is predicted to be 10. There is a very high risk of harm from sun exposure. Skin can be damaged and burn quickly in today’s conditions. Experts suggest avoiding sun exposure around noon and keeping to the shade. General advice is to use eye protection, sunscreen and cover up.

Winds will be south around 15 km/h in the morning shifting to south around 21 km/h in the afternoon.

Details for the next six days:

Thursday, February 20: Mostly cloudy. Possible shower. S'ly winds Min - 18. Max - 23.

Friday, February 21: Mostly sunny. SW winds tending E'ly Min - 18. Max - 26.

Saturday, February 22: Mostly sunny. NW winds tending NE Min - 18. Max - 29.

Sunday, February 23: Mostly sunny. N/NE winds Min - 17. Max - 32.

Monday, February 24: Mostly sunny. NE winds tending SE Min - 20. Max - 31.

Tuesday, February 25: Mostly cloudy. Clearing shower. SW/SE winds Min - 21. Max - 28.

The previous Parramatta weather article can be viewed here.