Harrison, AR Weather Forecast and Conditions - The Weather Channel | Weather.com Harrison, AR As of 4:28 pm CDT 79° Sunny Day 81° • Night 56° Watch: Best Time To See Eclipse Where You Live. Harrison, AR Weather Forecast, with current conditions, wind, air quality, and what to expect for the next 3 days. Go Back Cross-country storm to soak the Midwest before triggering.