Thunderstorms, rain and gusting winds are expected across most of the country on Friday and Saturday, the Thai Meteorological Department warned on Friday morning.
Thunderstorms and gusting winds are forecast for the upper part of Thailand.
Heavy rain, with some hail, is also forecast for areas of the North, the Northeast and the Central Plains.
The department said the unsettled weather is being caused by a moderate high pressure system moving from China over the upper areas of the country and the South China Sea.
It will bring thunderstorms and strong winds to the North, the Northeast, the Central Plains, the East and the South.
People are advised to remain inside during a storm and stay away from trees, billboards and flimsy buildings. Farmers are advised there could be crop damage.
In Nakhon Ratchasima, people in four districts are warned to prepare for more wind and rain after many houses were damaged by storms which have lashed six villages in three tambons of Phimai district since Tuesday - tambons Bot, Krabueang Yai and Rang Ka Yai.
The other three districts at risk of more storm damage are Sikhiu, Kham Thale So and Chum Phuang districts.
Local government officials have been sent to provide assistance for villagers affected by the storms. Advice was also being given on repairs and storm-proofing.
In the northern province of Nan, hail was reported falling on tambon Bo of Muang district on Friday. Most of the province has been swept by thunderstorms and gusty winds brought by the high pressure system.
