FREEZE WARNING 2 AM THURSDAY TO 8 AM THURSDAY for Northern Illinois and Northern Indiana

TODAY SUNRISE: 5:59 AM SUNSET: 7:41 PM

Chicagoland weather radar is all clear at about 10:27 PM.

Satellite images show a thin band of clouds over far northeastern Illinois — otherwise very clear skies.

The air temperature in Arlington Heights is about 5°F above the forecast for the hour, that is 43°F instead of the forecast of 38°F. A forecast low of 30°F is predicted from 5:00 a.m. to 6:00 a.m. with temperatures below freezing from 3:00 am. to about 8:00 a.m.

UPDATE: At 2:51 a.m. the temperature was 33°F.

Freeze Warning
URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
902 PM CDT WED APR 22 2015

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
231015-
/O.CON.KLOT.FZ.W.0001.150423T0700Z-150423T1300Z/
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF…ROCKFORD…BELVIDERE…WOODSTOCK…
WAUKEGAN…OREGON…DIXON…DEKALB…AURORA…WHEATON…CHICAGO…
OTTAWA…OSWEGO…MORRIS…JOLIET…KANKAKEE…PONTIAC…
WATSEKA…PAXTON…GARY…VALPARAISO…MOROCCO…RENSSELAER…
FOWLER
902 PM CDT WED APR 22 2015

…FREEZE WARNING REMAINS IN EFFECT FROM 2 AM CDT /3 AM EDT/ TO
8 AM CDT /9 AM EDT/ THURSDAY…

* TEMPERATURE…MID TO UPPER 20S ACROSS NORTHERN ILLINOIS WEST OF
CHICAGO…NEAR 30 IN EAST CENTRAL ILLINOIS AND NORTHWEST
INDIANA. MID 30S IN DOWNTOWN CHICAGO.

* IMPACTS…SENSITIVE VEGETATION MAY BE DAMAGED IF LEFT
UNPROTECTED…WITH PATCHY FROST ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

RATZER

 NWS POINT FORECAST … 

DETAILED FORECAST


Overnight
Patchy frost after 2am. Otherwise, partly cloudy, with a low around 30. West northwest wind 5 to 10 mph.


Thursday
Patchy frost before 8am. Otherwise, sunny, with a high near 53. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.


Thursday Night
Areas of frost after 1am. Otherwise, mostly clear, with a low around 33. West northwest wind 5 to 10 mph becoming light in the evening.


Friday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 54. Light and variable wind becoming east northeast 5 to 10 mph in the morning.


Friday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 39. East northeast wind 10 to 15 mph.


Saturday
A 50 percent chance of showers. Cloudy, with a high near 48. Breezy.


Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 36.


Sunday
Sunny, with a high near 55.


Sunday Night
Mostly clear, with a low around 35.


Monday
Mostly sunny, with a high near 57.


Monday Night
Partly cloudy, with a low around 40.


Tuesday
Partly sunny, with a high near 56.


Tuesday Night
A chance of showers. Mostly cloudy, with a low around 42.


Wednesday
A chance of showers. Mostly cloudy, with a high near 58.

 AIRPORT WEATHER OBSERVATIONS … 

Location Time
(cdt)
Sky/Weather Temp.
(ºF)
Dewpt.
(ºF)
Humidity
(%)
Wind
(mph)
Pressure
(in)
Chicago/O’Hare 21:51 Mostly Cloudy 40 25 55 W 6 29.87
Chicago Midway Airport 21:53 Partly Cloudy 43 24 47 SW 6 29.88
Chicago Executive Airport 21:52 Overcast 42 23 47 NW 3 29.88
Chicago / West Chicago, Dupage Airport 21:52 Partly Cloudy 40 23 51 W 7 29.87
Aurora Municipal Airport 21:52 Fair 34 23 64 W 7 29.89
Gary Chicago International 21:45 Mostly Cloudy 45 18 34 W 6 29.89
Kenosha Regional Airport 21:53 Overcast 34 26 73 W 5 29.86
Chicago / Waukegan, Waukegan Regional Airport 21:55 Mostly Cloudy 35 27 72 Calm 29.86
Lansing Municipal Airport 21:35 Mostly Cloudy 40 23 49 W 3 29.89
Click on location name for the weather during the past two days at that site.

 CHICAGO EXECUTIVE AIRPORT … 

D
a
t
e
Time
(cdt)
Wind
(mph)
Vis.
(mi.)
Weather Sky Cond. Temperature (ºF) Relative
Humidity
Wind
Chill
(°F)
Heat
Index
(°F)
Pressure Precipitation (in.)
Air Dwpt 6 hour altimeter
(in)
sea level
(mb)
1 hr 3 hr 6 hr
Max. Min.
22 21:52 NW 3 10.00 Overcast OVC090 42 23 47% NA NA 29.88 1012.3
22 20:52 NW 7 10.00 Overcast BKN070 OVC090 44 23 43% 40 NA 29.88 1012.3
22 19:52 W 8 10.00 Overcast OVC090 44 22 41% 39 NA 29.87 1012.0
22 18:52 NW 12 10.00 Overcast FEW060 OVC085 45 21 47 41 39% 39 NA 29.84 1011.0
22 17:52 NW 14 G 24 10.00 Overcast SCT060 OVC080 45 21 39% 39 NA 29.86 1011.6
22 16:52 NW 12 10.00 Overcast FEW049 BKN060 OVC075 46 24 42% 40 NA 29.85 1011.3
22 15:52 NW 17 10.00 Overcast SCT055 OVC070 44 23 43% 36 NA 29.84 1010.9
22 14:52 NW 18 G 25 10.00 Overcast SCT047 SCT055 OVC070 43 24 47% 35 NA 29.84 1010.8
22 13:52 W 16 G 23 10.00 Overcast BKN047 OVC060 42 23 47% 34 NA 29.84 1010.9
22 12:52 W 14 G 24 10.00 Overcast SCT045 OVC060 42 23 42 35 47% 35 NA 29.83 1010.5
22 11:52 W 17 G 25 10.00 Overcast OVC045 39 21 48% 30 NA 29.83 1010.4
22 10:52 NW 15 G 24 10.00 Overcast OVC047 39 20 46% 31 NA 29.81 1010.0
22 09:52 NW 17 G 29 10.00 Overcast OVC045 38 19 46% 29 NA 29.81 1009.8
22 08:52 NW 17 G 29 10.00 Mostly Cloudy BKN043 38 20 48% 29 NA 29.79 1009.1
22 07:52 NW 14 G 29 10.00 Overcast FEW038 OVC049 36 21 55% 27 NA 29.77 1008.6
22 06:52 W 14 10.00 Overcast OVC050 35 24 39 34 64% 26 NA 29.75 1007.9
22 05:52 W 18 G 25 5.00 Light Snow FEW021 BKN036 OVC060 35 27 72% 24 NA 29.72 1007.0
22 04:52 W 8 10.00 Overcast SCT034 SCT045 OVC060 36 26 67% 30 NA 29.71 1006.4
22 03:52 W 6 10.00 Mostly Cloudy FEW039 BKN065 36 26 67% 31 NA 29.71 1006.2
22 02:52 W 8 10.00 Fair CLR 36 26 67% 30 NA 29.69 1005.8
22 01:52 W 7 10.00 A Few Clouds FEW035 38 25 60% 33 NA 29.69 1005.7
22 00:52 W 12 10.00 Fair CLR 39 24 45 39 55% 32 NA 29.69 1005.7

 YESTERDAY’S OBSERVATIONS … 

21 23:52 W 12 10.00 Fair CLR 40 23 51% 33 NA 29.69 1005.6
21 22:52 W 15 G 25 10.00 Fair CLR 42 22 45% 34 NA 29.68 1005.4
21 21:52 W 14 G 20 10.00 Fair CLR 42 22 45% 35 NA 29.70 1005.9
21 20:52 W 13 G 18 10.00 Fair CLR 43 23 45% 36 NA 29.69 1005.8
21 19:52 W 17 G 30 10.00 Overcast OVC065 44 24 45% 36 NA 29.69 1005.6
21 18:52 W 16 G 32 10.00 Overcast OVC075 45 24 54 45 44% 38 NA 29.67 1005.1
21 17:52 W 20 G 36 10.00 Mostly Cloudy FEW055 BKN075 46 24 42% 38 NA 29.66 1004.6
21 16:52 W 23 G 33 10.00 A Few Clouds and Breezy FEW055 48 24 39% 40 NA 29.64 1004.0
21 15:52 NW 25 G 37 10.00 Partly Cloudy and Breezy SCT065 SCT080 51 27 39% NA NA 29.59 1002.4
21 14:52 W 24 G 38 10.00 Mostly Cloudy and Breezy FEW048 SCT080 BKN095 53 23 31% NA NA 29.58 1001.8
21 13:52 W 22 G 36 10.00 Overcast and Breezy BKN060 OVC090 52 27 38% NA NA 29.59 1002.1
21 12:52 W 20 G 38 10.00 Overcast BKN055 OVC070 48 26 49 40 42% 41 NA 29.61 1003.0
21 11:52 W 30 G 39 10.00 Overcast and Windy OVC060 46 23 40% 37 NA 29.61 1003.1
21 10:52 W 23 G 35 10.00 Overcast and Breezy BKN044 OVC055 45 26 48% 36 NA 29.61 1002.9
21 09:52 W 18 G 32 10.00 Overcast FEW036 BKN048 OVC055 43 28 56% 35 NA 29.61 1003.0
21 08:52 W 15 G 30 10.00 Overcast FEW036 OVC048 42 28 58% 34 NA 29.60 1002.7
21 07:52 W 18 G 28 10.00 NA NA 41 29 62% 32 NA 29.60 1002.6
21 06:52 SW 12 G 23 10.00 Overcast OVC060 40 28 42 39 63% 33 NA 29.59 1002.3
21 05:52 W 10 G 23 10.00 Fair CLR 39 28 65% 32 NA 29.59 1002.3
21 04:52 W 14 G 21 10.00 Fair CLR 40 29 65% 32 NA 29.58 1002.0
21 03:52 SW 13 G 21 10.00 Fair CLR 40 30 68% 32 NA 29.59 1002.1
21 02:52 W 12 G 17 10.00 Fair CLR 41 30 65% 34 NA 29.59 1002.4
21 01:52 SW 10 10.00 A Few Clouds FEW090 41 32 70% 35 NA 29.60 1002.6
21 00:52 SW 10 10.00 Partly Cloudy SCT070 41 33 46 41 73% 35 NA 29.61 1002.9

 MORE HELPFUL LINKS …  

LIVE RADAR | STORM TRACKS | UNISYS US IR SAT | UNISYS Midwest IR SAT | UNISYS More IR SAT

WunderMap® with Temperature/Wind Data || Google: Arlington Heights Temps | NE Illinois Temps

Full Screen Motion Weather Radar (Wunderground.com)

Midwest Cloud Cover with Arlington Heights Weather Forecast | SWPC Aurora Forecast

ChicagoWeatherStation.com I O’Hare Normal Temps/Precip I O’Hare Record Temps, Precip, Snow

SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with solar azimuth and trajectory, times for dawn, sunrise, solar noon, sunset, dusk …

LIVE TRAFFIC MAP of neighborhood of a near …


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