The family event will run from 11am to 2pm and will have a sausage sizzle and childrens' activities, including a bouncy castle, face painting, races and competitions with prizes.
Mr Rossiter-Stead said last month's Lansdowne Community Fair, where people looked at plans for the Lansdowne Shopping Village, "attracted hundreds, who gave a wide range of views of the proposed development".
"Many people commented how good it was to give their opinion straight to the mayor and councillors and it's definitely something that we will be repeating during our Long Term Plan consultation process.
"The feedback we receive will play a major role in shaping how the council will invest in that area of Masterton.
"It will be a good opportunity for the community who live around McJorrow Park to find out how they can get involved with the development going on there."
If the weather is wet the fair will be at Te Awhina Cameron Community House, Stuart Crescent.