The highest expected temperature tomorrow is 31, which is three degrees higher than today's max.

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

The chance of rain tomorrow is 50 per cent.

Showers are more likely on Tuesday when the Bureau of Meteorology forecasts a high (80 per cent) chance of rain.

The UV index is predicted to be 11. There is an extreme risk of harm from sun exposure. Unprotected skin can burn within minutes in today's conditions. Experts suggest looking for shade and avoiding sun exposure around noon. General advice is to take all precautions such as using eye protection, sunscreen and covering up.

Winds will be north-northwest around 6 km/h in the morning shifting to east around 12 km/h in the afternoon.

Details for the next six days:

Monday, January 13: Morning fog patches. Chance late thunder. NW winds tending NE Min - 20. Max - 31.

Tuesday, January 14: Partly cloudy. Late shower or storm. NW winds tending E'ly Min - 21. Max - 31.

Wednesday, January 15: Morning fog patches. Possible shower. N/NE winds Min - 21. Max - 34.

Thursday, January 16: Partly cloudy. Chance morning thunder. Fresh SW winds Min - 21. Max - 26.

Friday, January 17: Mostly cloudy. Late shower. Strong SW winds Min - 18. Max - 25.

Saturday, January 18: Mostly cloudy. Possible shower. Fresh S'ly winds Min - 17. Max - 23.

The previous Parramatta weather article can be viewed here.