ENFIELD — Officials are warning against open burning across much of the Upper Valley, amid dry and windy conditions.

On Thursday, the National Weather Service in Burlington issued a Red Flag warning for Friday from 7 a.m. to 6 p.m. for most towns on the Vermont side of the Upper Valley due to expected high winds and low humidity.

The warning warns “any fires that develop may quickly get out of control and become difficult to contain.”

A burn ban remains in place in Windsor County and three other counties in Vermont. On Monday, the state extended an Oct. 28 statewide burn ban through Nov. 18 at 3 p.m. for Windsor, Bennington, Rutland and Windham counties.

In New Hampshire, as of Thursday, the Upper Valley towns of Enfield, Grafton, Orange, Canaan and Lyme all have bans in place.

Lyme’s ban is expected to be in effect through Monday at the earliest or “until real rainfall occurs,” according to an email sent to town residents on Thursday morning. The other towns did not provide an expected date for when the bans will be lifted.

“We need rain and it doesn’t look like there’s much in the forecast,” Enfield Fire Warden David Crate said in a phone interview.

The fire danger in the Upper Valley was “high”, and in some Southern Vermont towns closest to the New Hampshire border, “very high” as of Thursday, according to the New Hampshire Division of Forests & Lands and the Vermont Department of Forests, Parks and Recreation.