Today
Today will be mainly dry with bright or sunny spells and a few light showers.
Cloud will increase this afternoon and rain and drizzle will develop on southwest and west coasts later this evening.
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Highest temperatures of 16 to 20 degrees with light to moderate northwest breezes, becoming westerly.
Tonight
Tonight will start off dry in many areas. However rain in in the west and southwest will spread northeastwards across the country.
It will become heavy at times overnight, especially in Ulster.
Lowest temperatures of 10 to 14 degrees, coolest in the north.