Sussex is set for a warm day as temperatures are set to reach a high of 19 degrees Celcius in Horsham according to the Met Office.
Chichester will reach 17 degrees and Worthing 16.
West Sussex will see lows of around 9 degrees, the forecaster said.
Across the county there will be sunny spells earlier in the day with the weather set to become cloudier later on.
In the east the weather will be slightly cooler, reaching 15 degrees in Hastings but the night is set to be slightly milder than in the west, around 11 degrees.
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