Ayer Rainfall ForecastUnited StatesMAMiddlesex CountyAyerToday 16 Apr5%Thu 17 Apr5%Fri 18 Apr25%Sat 19 Apr45%Sun 20 Apr15%Mon 21 Apr15%Tue 22 Apr35%Ayer rainfall forecast issued today at 5:04 am. Next forecast at approx. 7:04 pm.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