View detailed hour-by-hour weather forecast for Mountainburg, AR. Track temperature, precipitation, dew point, humidity, wind and more with accurate hourly predictions from WeatherBug.

Partly cloudy. A 20 percent chance of rain showers after midnight. Lows in the upper 60s. West winds up to 10 mph with gusts to around 20 mph. Partly sunny. Chance of light showers and thunderstorms ...

Mostly cloudy through midnight then becoming partly cloudy. A slight chance of showers and thunderstorms through midnight. Lows in the upper 60s. West winds 5 to 10 mph. Chance of rain 20 percent.