As a precaution, Gov. Nathan Deal announced Monday afternoon that all state government buildings and offices will delay opening until 10 a.m.

Later Monday, the City of Atlanta followed suit and will open at 10 a.m.

Out of an abundance of caution and following the latest update from @NWSAtlanta, state government will delay opening until 10 a.m. tomorrow, Dec. 11. Read more here: https://t.co/xP10n0Kjqj — Governor Nathan Deal (@GovernorDeal) December 10, 2018

Cobb County and Acworth will delay some government operations until 9 a.m., while Clayton County government offices will delay opening until 9:30 a.m. Canton, Chamblee, Cherokee County, College Park, DeKalb County, Doraville, Dunwoody, East Point, Fulton County, Henry County, Johns Creek, McDonough, Roswell, Smyrna, South Fulton and Union City will delay opening until 10 a.m. Alpharetta government operations will also delay opening until 10:30 a.m.

Due to the possibility of black ice tomorrow morning, the City will delay opening for non-essential personnel until 10:00 a.m. on Tuesday, December 11, 2018. Please drive safely. pic.twitter.com/bYJhtg9i4h — City of Dunwoody, GA (@DunwoodyGA) December 10, 2018

The University of Georgia, Emory, Georgia Tech, Georgia State, Kennesaw State, Clark Atlanta, Morehouse, Mercer's Atlanta campus, Reinhardt and Spelman announced that they will all delay opening until 10 a.m. Georgia Gwinnett College will be on a two-hour delay.

Two-hour delays will be in effect for several metro Atlanta school districts: Atlanta Public, Buford City, Clayton County, Cobb County, Decatur City, DeKalb County, Fulton County, Gwinnett County and Marietta City.

Others on two-hour delays include: Barrow County, Bartow County, Butts County, Calhoun City, Carroll County, Carrollton City, Cherokee County, Coweta County, Douglas County, Fannin County, Fayette County, Forsyth County, Gainesville City, Gilmer County, Gordon County, Hall County, Haralson County, Henry County, Jackson County, Madison County, Meriwether County, Newton County, Oglethorpe County, Paulding County, Polk County, Rockdale County, Union County and Walton County. Chattooga County will have a three-hour delay.

Banks County, Dawson County, Floyd County, Habersham County, Pickens County, Rabun County, Rome City and Whitfield County have canceled classes Tuesday.

All FCS schools & central offices will open 2hrs late tmrrw, 12/11 in alignment with Gov's msg that state offices will open late b/c of black ice potential. Staff to arrive no later than 2hrs from scheduled start. Stay tuned to FCS website, social media & local news for updates. pic.twitter.com/kx677wD56R — FultonCountySchools (@FultonCoSchools) December 10, 2018

Patches of black ice are likely where roadways stay wet overnight, especially bridges and overpasses, Nitz said. After a rainy Monday, Nitz said humidity will stay above 90 percent overnight, meaning the roads won’t have a chance to dry out.

MORE: Black ice: What Georgia drivers need to know to stay safe

Looks like we will be at it again tonight folks! 💪🏽 Brine Tankers will be out tonight at 7p brining all priority routes‼️ For all the folks staying inside tonight (recommended), we suggest a nice hot bowl of Chili to go with this “Chilly” weather! 🥶😂 #WorkingforYou pic.twitter.com/JShejy17Ut — Georgia DOT ATL (@GDOTATL) December 10, 2018

Secondary or untreated roadways as well as sidewalks, porches or decks are also common spots for black ice to develop, according to the National Weather Service. Commuters are urged to use caution and plan accordingly, as black ice is sometimes difficult to see and makes roads dangerously slick.

Black Ice is expected to develop tonight & early Tuesday morning across North Georgia as roads remain wet & freezing temperatures are expected. Black ice is difficult to see & makes roads very slippery, especially on bridges & overpasses. Please use caution & drive safely #gawx pic.twitter.com/7p2kIKLCbZ — NWS Atlanta (@NWSAtlanta) December 10, 2018

—Please return to AJC.com for updates.

» For a detailed forecast, visit The Atlanta Journal-Constitution weather page.

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