Chicago Weather: Wind Chill Advisory; Hourly Guide to Bone-Chilling Cold Today, Monday

CHICAGO, IL — How low can we go? And when will the bone-chilling cold temperatures hit bottom? Brace yourselves and bundle up — the next 48 hours will bite.

In fact, today's Chicago Bears-Green Bay Packers game may go down as the coldest Chicago game in NFL history. (That may be the most interesting thing about this Bears season, sadly.)

A Wind Chill Advisory is in effect throughout the Chicago area until 10 a.m. Monday, meaning there is potential for frostbite and hypothermia as very cold air and strong winds combine to generate low wind chills. The winds are coming out of the northwest at 10 to 20 miles per hour today, with gusts of 30 mph near the lake.

Be cautious about spending time outdoors. Let weather science be your guide. Here's the hour-by-hour temperature and wind-chill forecast for Sunday and Monday, according to the National Weather Service:

TEMPERATURE

Today, Dec. 18

• 11 a.m.: 2
• noon: 2
• 1 p.m.: 2
• 2 p.m.: 2
• 3 p.m.: 1
• 4 p.m.: 0
• 5 p.m.: -2
• 6 p.m.: -4
• 7 p.m.: -6
• 8 p.m.: -7
• 9 p.m.: -8
• 10 p.m.: -9
• 11 p.m.: -10
• midnight: -10

Monday, Dec. 19

• 1 a.m.: -10
• 2 a.m.: -10
• 3 a.m.: -9
• 4 a.m.: -8
• 5 a.m.: -8
• 6: a.m: -7
• 7 a.m.: -6
• 8 a.m.: -4
• 9 a.m.: -2
• 10 a.m.: 2
• 11 a.m: 6
• noon: 10
• 1 p.m.: 13
• 2 p.m.: 15
• 3 p.m.: 15
• 4 p.m.: 15
• 5 p.m.: 13
• 6 p.m.: 12
• 7 p.m. 12
• 8 p.m: 11
• 9 p.m.: 11
• 10 p.m.: 11
• 11 p.m.: 12
• midnight: 12

Tuesday, Dec. 20

• 1 a.m.: 12
• 2 a.m.: 13
• 3 a.m.: 13
• 4 a.m.: 13
• 5 a.m.: 14
• 6 a.m.: 14
• 7 a.m.: 15
• 8 a.m.: 16
• 9 a.m: 17
• 10 a.m.: 20

WIND CHILL

Today, Dec. 18

• 11 a.m.: -16
• noon: -15
• 1 p.m.: -15
• 2 p.m.: -15
• 3 p.m.: -15
• 4 p.m.: -15
• 5 p.m.: -17
• 6 p.m.: -18
• 7 p.m.: -17
• 8 p.m.: -18
• 9 p.m: -19
• 10 p.m.: -20
• 11 p.m.: -19
• midnight: -19

Monday, Dec. 19

• 1 a.m.: -10
• 2 a.m.: -10
• 3 a.m.: -9
• 4 a.m. -17
• 5 a.m.: -19
• 6 a.m. -18
• 7 a.m.: -19
• 8 a.m.: -18
• 9 a.m.: -17
• 10 a.m.: -13
• 11 a.m.: -10
• noon: -6
• 1 p.m.: -2
• 2 p.m.: 0
• 3 p.m.: 0
• 4 p.m.: 0
• 5 p.m.: -2
• 6 p.m.: -3
• 7 p.m.: -3
• 8 p.m.: -3
• 9 p.m.: -3
• 10 p.m.: -3
• 11 p.m.: -2
• midnight: -2

Tuesday, Dec. 20

• 1 a.m.: -2
• 2 a.m.: -1
• 3 a.m.: -1
• 4 a.m.: -1
• 5 a.m.: 1
• 6 a.m.: 0
• 7 a.m.: 0
• 9 a.m.: 0
• 10 a.m.: 0
• 11 a.m.: 4

RECENT SNOWFALL

Here are some facts about the last 48 hours of snowfall throughout the Chicago metro area:

• The highest snowfall totals from Saturday night were in far northwest Indiana, where an intense lake effect band produced up to 9 inches of snow in Porter County
• The official snowfall for Chicago from Dec. 16 to Dec. 18 was 3.4 inches at Chicago O'Hare International Airport. (1.2" on Friday, 2.2" on Saturday night).
• Visit the NWS weather page for some town-by-town snowfall measurements.