FROST ADVISORY: Low 34°F “Warming Up” to 45°F Friday, Arlington Heights, Chicago Weather Forecast Northwest

FREEZE WARNING IN MCHENRY COUNTY AND KANE COUNTY
Cloud cover dissipated from the south through the afternoon, so cloud cover is not likely to hold in any warmth overnight. A cool and dry air mass and diminishing west-northwest winds from surface high pressure ridging that is slowly moving eastward will allow significant radiational cooling. Winds of about 8-9 MPH could prevent widespread frost formation outside of Chicago. Air temperature at 10:51 p.m. was 41°F at O’Hare, which is a little higher than was expected for the hour.

A Freeze Warning is activated for McHenry County and Kane County, and northern Illinois counties west to Iowa.

There are clouds to the east near Lake Michigan, but the night sky overhead and west of Arlington Heights was clear at 11:00 p.m. Bright stars and no moonlight, then clouds are expected to start moving in about 3:00 a.m.

Weather Radar (also nexrad.chgowx.com) shows OR Weather Radar (also nexrad.chgowx.com) in northeast Illinois is clear.








 O’HARE FORECAST … 

Frost Advisory

Tonight: Mostly clear, with a low around 34. West northwest wind around 10 mph.

Friday: Increasing clouds, with a high near 45. West wind 10 to 15 mph.

Friday Night: Widespread frost, mainly after 4am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 33. West wind 5 to 10 mph.

Saturday: Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 51. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Saturday Night: Partly cloudy, with a low around 41. Southwest wind around 10 mph.

Sunday: Mostly cloudy, with a high near 50.

Sunday Night: A 50 percent chance of showers before 4am. Mostly cloudy, with a low around 37.

Monday: Partly sunny, with a high near 46.

Monday Night: Widespread frost, mainly after 4am. Otherwise, partly cloudy, with a low around 33.

Tuesday: Widespread frost before 8am. Otherwise, mostly sunny, with a high near 51.

Tuesday Night: Partly cloudy, with a low around 38.

Wednesday: Sunny, with a high near 52.

Wednesday Night: Mostly clear, with a low around 40.

Thursday: Sunny, with a high near 59.

Frost Advisory
URGENT – WEATHER MESSAGE
National Weather Service Chicago IL
827 PM CDT Thu Oct 11 2018

ILZ014-120930-
/O.CON.KLOT.FR.Y.0003.181012T0600Z-181012T1400Z/
Cook-
Including the city of Chicago
827 PM CDT Thu Oct 11 2018

…FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT
FRIDAY…

* TEMPERATURE…Lower to mid 30s, mainly outside the city of
Chicago.

* IMPACTS…Sensitive outdoor plants and vegetation may be
damaged or killed if left uncovered or not brought indoors.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

 LAKE TEMPS … 

SOUTHERN LAKE MICHIGAN WATER TEMPERATURES
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
907 AM CDT Thu Oct 11 2018

LAKE MICHIGAN WATER TEMPERATURES…

CHICAGO SHORE……….67.

CHICAGO CRIB……….65.

WILMETTE BUOY……….62.

WAUKEGAN BUOY……….59.

WINTHROP HARBOR BUOY……….53.

MICHIGAN CITY……….65.

MICHIGAN CITY BUOY……….61.

SOUTH MID LAKE BUOY……….62.

NORTH MID LAKE BUOY……….57.

&&

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

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