Merrimack River - Newburyport Rainfall ForecastUnited StatesMAEssex CountyMerrimack River - NewburyportToday 16 Apr5%Thu 17 Apr5%Fri 18 Apr25%Sat 19 Apr40%Sun 20 Apr15%Mon 21 Apr10%Tue 22 Apr35%Merrimack River - Newburyport rainfall forecast issued today at 12:04 pm. Next forecast at approx. 2:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Boston RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads