Heat and dry weather forecast for Kansas this weekend are expected to strain a winter wheat crop already battered by drought conditions and early spring freezes.

The National Weather Service says temperatures across most of southern Kansas are expected to climb into the mid-80s on Saturday and the low 90s by Sunday, with some places along the Kansas-Oklahoma border reaching the high 90s. A slight chance of rain is forecast for Wednesday.

The onset of hot weather comes after a winter wheat tour forecast on Thursday that this year’s production will be 260 million bushels, with an average estimated yield of 33.2 bushels per acre.

Statistics from 2000 to 2013 show the tour tends to overestimate yields and production.