Rain will ease for a time today but cloud will build, bringing another spell of rain later, according to forecasters.
Afternoon temperatures of just three or four degrees will rise later with the cloud and rain.
Tonight will see heavier spells of rain extending northwards with the risk of localised floods.
Wednesday will be mostly cloudy with further spells of rain with a highest temperatures of 10 to 12 degrees in moderate south-westerly breezes.
The outlook is for milder and unsettled weather.
There will be spells of rain continuing and occasional interludes of drier, brighter weather later in the week.
If you have a story or want to send a photo or video to us please contact the Derry Now editorial team on 028 7129 6600 for Derry City stories Or 028 7774 3970 for County Derry stories. Or you can email email@example.com or firstname.lastname@example.org at any time.
Subscribe or register today to discover more from Derrynow.com
Buy the e-paper of the Derry News and the County Derry Post here for instant access to Derry's premier news titles.
Keep up with the latest news from Derry with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.