The Met Office is forecasting a wet start for some parts of the county and below average temperatures for the time of year.
Monday is due to be the warmest day of the week before turning cooler for the rest of the week and into the start of the three-day Bank Holiday weekend.
For most of the week it will reach no more than 8C or 9C.
Here is a summary according to the Met Office for Monday, April 26 to Saturday, May 1:
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Monday, April 26
Cloudy turning to heavy rain in the afternoon and into the evening. The temperature will range from 4C to 12C.
Tuesday, April 27
A cloudy but dry start changing to a 50% chance of light rain from 10am. It will feel significantly cooler at just 6C or 7C all day.
Wednesday, April 28
Cloudy all day but dry. It will feel as cold as just 3C or 4C.
Thursday, April 29
Sunny intervals changing to light showers by late morning. The top temperature will be 7C.
Friday, April 30
Sunny intervals turning to light showers by late morning. The temperature will be 7C or 8C.
Saturday, May 1
Sunny spells for much of the day and likely to stay dry. But it will still feel quite cool at no more than 9C in the afternoon.
The UK has had just 12.8mm of rain on average across the UK up to April 22, much lower than the monthly average of 72.53mm.