Can I extend my visa after September if I entered Thailand in February?

I'm closing comments. IF your embassy issues these letters, there is NO promises that another 30 days will be granted. I have not seen anyone get this extended into October, and it is not something I would assume would be granted.

According to the handout issued by the Thai immigration office, the answer is yes.

If you qualify for an extension of stay, get that extension of stay by September 26

If you do not qualify for an extension of stay, contact your embassy and request a letter explaining why you can't return. IF your embassy issues you the letter, then you'll take it to your local immigration office. They will review the letter, and *MAY* grant you an additional 30 days of amnesty. There is no promise you can stay another 30 days.