Rain is forecast for the 8.30am start of tomorrow’s Walled City Marathon in Derry.
After a dry period half a hour into the race, showers will return and continue until noon, according forecasters.
The afternoon will be a mixture of sunshine and showers.
Temperatures will be ideal for runners, with 8 degrees forecast for the start reaching around 12 degrees in the afternoon.
A moderate breeze will also ensure competitors are kept cool.
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