Frost Advisory for Northern Cook County and All Other Counties in Northern Illinois Except Will County

Frost Advisory Friday, October 22, 2021 to Saturday, October 23, 2021 (SOURCE: NWS Chicago)
Frost Advisory Friday, October 22, 2021 to Saturday, October 23, 2021; Frost Advisory blue, elevated risk of frost yellow (SOURCE: NWS Chicago).

FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT FRIDAY/SATURDAY TO 8 AM CDT SATURDAY for …

COUNTIES: Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Northern Cook-Northern Will-Southern Will

Including the municipalities of Rockford, Belvidere, Crystal Lake,
Algonquin, Arlington Heights, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein, Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb,
Sycamore, Aurora, Elgin, Naperville, Wheaton, Downers Grove,
Lombard, Carol Stream, Ottawa, Streator, La Salle, Mendota,
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, Minooka,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Joliet,
Bolingbrook, Plainfield, Mokena, Channahon, Manhattan,
and Wilmington

The latest Frost Advisory was issued at 859 PM CDT Fri Oct 22 2021




EXPECT… Low temperatures in the low to mid 30s will result in frost formation. Some of the typically colder locations could drop below freezing for a time early Saturday morning.

WHERE… Portions of north central and northeast Illinois.

WHEN… From midnight tonight to 8 AM CDT Saturday.

IMPACTS… Frost could kill sensitive outdoor vegetation if left
uncovered.




Clouds are forecast to decrease gradually overnight and are forecast to keep temperatures steady underneath them — and keep frost from forming until later toward dawn. The clouds also greatly reduce any concern for a Freeze in north central Illinois, as any 30-32 temperatures are likely to be short lived near dawn. Frost in Arlington Heights would likely occur between 5:00 a.m. and 8:00 a.m., and the low is forecast to dip to 35°F about 7:00 a.m. O’Hare is forecast to dip to 38°F about 7:00 a.m. (with no Frost Advisory).

Weather Radar in northern Illinois is clear at .

See also Arlingtoncardinal.com/clouds

 O’HARE FORECAST … 

Tonight: Partly cloudy, with a low around 38. North northwest wind around 5 mph becoming calm.

Saturday: Sunny, with a high near 55. Calm wind becoming north northwest around 5 mph.

Saturday Night: Partly cloudy, with a low around 42. East northeast wind around 5 mph.

Sunday: Rain. High near 52. Breezy, with an east wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.

Sunday Night: Rain and possibly a thunderstorm. Low around 50. Breezy, with an east northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.

Monday: Rain, mainly before 1pm. High near 52. Breezy. Chance of precipitation is 80%.

Monday Night: A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 47.

Tuesday: Mostly sunny, with a high near 57.

Tuesday Night: A chance of showers after 1am. Mostly cloudy, with a low around 47.

Wednesday: A chance of showers. Mostly cloudy, with a high near 55.

Wednesday Night: A chance of showers. Mostly cloudy, with a low around 49.

Thursday: A chance of showers. Partly sunny, with a high near 53.

Thursday Night: A chance of showers. Mostly cloudy, with a low around 47.

Friday: A chance of showers. Partly sunny, with a high near 53.

 LAKE TEMPS … 

SOUTHERN LAKE MICHIGAN WATER TEMPERATURES
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
937 AM CDT Fri Oct 22 2021

LAKE MICHIGAN WATER TEMPERATURES…

CHICAGO SHORE……….62.

CHICAGO CRIB……….62.

WILMETTE BUOY……….61.

WINTHROP HARBOR BUOY……….58.

MICHIGAN CITY……….62.

SOUTH MID LAKE BUOY……….62.

NORTH MID LAKE BUOY……….59.

&&

M IS FOR MISSING DATA THAT IS NORMALLY AVAILABLE.

THE MICHIGAN CITY WATER TEMPERATURE SENSOR IS LOCATED AT A WATER
INTAKE ONE MILE OFFSHORE AND 60 FEET BELOW WATER SURFACE. IT IS READ
EVERY DAY OF THE YEAR.

october.chicagoweatherstation.com

Arlingtoncardinal.com/radar

Chicago Weather Forecast for your MAC/PC/TABLET includes surrounding suburbs.

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