Sept 28 (Reuters) -ICE cotton futures rose to their highest in a month on Thursday, supported by a slide in the U.S. dollar and speculative interest.

* Cotton contract for December CTZ3 rose 0.69 cent, or 0.8%, to 89 cents per lb at 12:31 p.m. EDT (1631 GMT).

* The dollar was down 0.5% against its rivals, making the natural fiber less expensive for other currency holders. USD/

* "There's no logical reason why U.S. cotton should have that price, but other than the speculators wanting to push it higher," said Peter Egli, director of risk management at British merchant Plexus Cotton.

* "It's continuous speculative buying... It looks like the market was technically weak and will break, but then it held and now the specs are coming back in," Egli added.

* The U.S. Department of Agriculture's (USDA) weekly export sales report showed net sales of 55,300 running bales of cotton for 2023/2024, down 48% from the previous week. The report showed exports of 159,400 running bales, up 6% from the previous week, primarily to China. EXP/COT

* The USDA in a weekly crop progress report said on Monday 30% of the cotton crop was in good to excellent condition compared with 29% last week.
* Corn and soybean eased after the crude oil rally paused, while wheat was subdued as grain traders awaited U.S. stocks data for further direction. GRA/

Reporting by Sherin Elizabeth Varghese in Bengaluru; Editing by Shilpi Majumdar