It happened in Dorset Avenue last night when the victim was walking along the pavement with a friend.
They were both hit by a dark-coloured car.
One of the men was then stabbed in his lower body and is in a serious condition in hospital.
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After a mostly dry start, cloud will continue to thicken with some showery rain likely this afternoon. Highs of 18 deg C (64 deg F).
Tributes have been pouring in for a woman who died in a house fire in West Norfolk.
Any residual evening showers should die out. Clear spells at first, and turning chilly in places. Lows of 9 deg C (48 deg F).