Sidney-Richland Municipal Airport Rainfall ForecastUnited StatesMTRichland CountySidney-Richland Municipal AirportToday 19 Apr5%Sun 20 Apr30%Mon 21 Apr75%Tue 22 Apr45%Wed 23 Apr5%Thu 24 Apr30%Fri 25 Apr30%Sidney-Richland Municipal Airport rainfall forecast issued today at 4:03 am. Next forecast at approx. 6:03 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Glasgow RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads