Here's what you can expect with tomorrow's Penrith weather

As we move into summer what can locals expect tomorrow? We have the latest word from the Weather Bureau.

Weather forecasts are updated on the hour, sourced from WeatherZone.

Tomorrow's forecast is mostly sunny; sw winds tending ne.

The highest expected temperature tomorrow is 31, which is 10 degrees lower than today's max.

Today's maximum is the highest the mercury will climb over the next seven days, according to the forecast.

The chance of rain tomorrow is 20 per cent.

Showers are more likely on Sunday when the Bureau of Meteorology forecasts a slight (30 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 south around 5 km/h in the morning increasing to east-northeast around 7 km/h in the afternoon.

Details for the next six days:

Saturday, December 28: Mostly sunny. SW winds tending NE Min - 19. Max - 31.

Sunday, December 29: Sunny. W'ly winds tending SE Min - 15. Max - 34.

Monday, December 30: Mostly cloudy. Clearing shower. SW winds tending NE Min - 19. Max - 30.

Tuesday, December 31: Mostly cloudy. Showers, chance storm. NW winds tending SE Min - 18. Max - 32.

Wednesday, January 1: Partly cloudy. Possible shower. SW winds tending NE Min - 20. Max - 33.

Thursday, January 2: Cloudy. Possible shower. SE winds Min - 19. Max - 26.

The previous Penrith weather article can be viewed here.