On the first day of fall, we have temperatures that feel like late autumn.

Fall officially arrived at 9:31 a.m. Tuesday when the sun was exactly over the equator, moving from north to south.

It’s a time when the sun is rising later, and setting sooner. Total length of daylight is 12 hours and eight minutes; about an hour less than it was on Sept. 1.

Low temperatures this morning were 32 in Willimantic, 34 in Danbury, 36 in Windsor Locks, 37 in Oxford and Meriden, 42 in New Haven and 43 in Bridgeport.

Parts of interior Connecticut had the fourth consecutive day of overnight temperatures in the 30s. Some towns in Litchfield County, also saw the first frost of the season.

Temperatures over those four nights averaged more than 12 degrees below normal, according to the Northeast Regional Climate Center.

Danbury set new cold temperature records with a low of 32 degrees on Monday and Tuesday morning’s 36 degrees.

The first day of fall will have gusty winds that will increase the danger of forest and brush fires Tuesday.

“Gusty northwest winds will develop today and continue into the afternoon, with gusts up to 20 to 25 miles per hour. The gusty winds, combined with low fuel moisture, and relative humidity values lowering to near 25 to 30 percent, will aid fires spread should ignition occur,” the National Weather Service says.

High tides in southern Fairfield and New Haven counties are expected to be 1.5 high higher than normal. The coastal flood advisories are in effect from and 2 to 6 p.m.

The forecast

High temperatures should be well into the 60s to near 70. Mildest of the readings will occur in the lower Connecticut River valley, where sunshine will be the brightest.

The shorelines of eastern New England will continue to see strong winds, rip currents and high surf as Hurricane Teddy moves northeast in the Atlantic.

Today: Sunny, with a high near 71. North wind 7 to 14 mph, with gusts as high as 28 mph.

Tonight: Mostly clear, with a low around 46. Northwest wind 8 to 13 mph.

Wednesday: Sunny, with a high near 77. Northwest wind 6 to 13 mph, with gusts as high as 28 mph.

Wednesday Night: Mostly clear, with a low around 55. Northwest wind 5 to 7 mph becoming calm after midnight.