| D a t e | Time (cst) | 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. | |||||||||||||||||
| 18 | 23:51 | NW 3 | 10.00 | Mostly Cloudy | FEW023 BKN034 | 19 | 11 | 26 | 18 | 71% | NA | NA | 30.55 | 1035.6 | |||
| 18 | 22:51 | Calm | 10.00 | Overcast | OVC033 | 19 | 12 | 74% | NA | NA | 30.55 | 1035.6 | |||||
| 18 | 21:51 | NW 5 | 10.00 | A Few Clouds | FEW034 | 19 | 12 | 74% | 12 | NA | 30.54 | 1035.3 | |||||
| 18 | 20:51 | NW 6 | 10.00 | Partly Cloudy | SCT030 | 20 | 13 | 74% | 12 | NA | 30.53 | 1034.9 | |||||
| 18 | 19:51 | NW 6 | 10.00 | Mostly Cloudy | BKN030 | 21 | 13 | 71% | 13 | NA | 30.51 | 1034.2 | |||||
| 18 | 18:51 | N 6 | 10.00 | Mostly Cloudy | SCT022 BKN032 | 25 | 16 | 69% | 18 | NA | 30.48 | 1033.3 | |||||
| 18 | 17:51 | N 8 | 10.00 | Mostly Cloudy | FEW025 SCT032 BKN045 | 23 | 15 | 31 | 22 | 72% | 14 | NA | 30.45 | 1032.2 | |||
| 18 | 16:51 | N 5 | 10.00 | Mostly Cloudy | SCT033 BKN045 | 26 | 14 | 60% | 20 | NA | 30.43 | 1031.4 | |||||
| 18 | 15:51 | NW 6 | 10.00 | Mostly Cloudy | SCT033 BKN043 | 26 | 15 | 63% | 19 | NA | 30.41 | 1030.7 | |||||
| 18 | 14:51 | N 6 | 10.00 | Mostly Cloudy | BKN033 | 29 | 16 | 58% | 23 | NA | 30.39 | 1030.0 | |||||
| 18 | 13:51 | Calm | 10.00 | Mostly Cloudy | BKN033 | 30 | 16 | 56% | NA | NA | 30.37 | 1029.4 | |||||
| 18 | 12:51 | N 10 | 10.00 | Mostly Cloudy | SCT022 BKN030 | 27 | 17 | 66% | 18 | NA | 30.35 | 1028.8 | |||||
| 18 | 11:51 | N 9 | 10.00 | Mostly Cloudy | FEW020 BKN038 | 27 | 19 | 27 | 20 | 72% | 18 | NA | 30.33 | 1028.2 | 0.01 | ||
| 18 | 10:51 | N 10 | 10.00 | Mostly Cloudy | FEW013 SCT033 BKN130 | 26 | 19 | 75% | 16 | NA | 30.32 | 1027.6 | |||||
| 18 | 09:51 | N 12 | 10.00 | Partly Cloudy | FEW013 SCT033 SCT130 | 24 | 19 | 81% | 13 | NA | 30.28 | 1026.4 | |||||
| 18 | 08:51 | N 14 | 6.00 | Light Snow Fog/Mist | FEW019 SCT025 OVC035 | 21 | 19 | 92% | 8 | NA | 30.24 | 1025.1 | 0.01 | 0.01 | |||
| 18 | 07:51 | N 12 | 2.00 | Light Snow Fog/Mist | BKN023 OVC032 | 22 | 19 | 89% | 10 | NA | 30.21 | 1023.9 | |||||
| 18 | 06:51 | NW 12 | 2.50 | Light Snow Fog/Mist | BKN023 OVC027 | 22 | 20 | 92% | 10 | NA | 30.15 | 1021.9 | |||||
| 18 | 05:51 | NW 9 | 1.50 | Light Snow Fog/Mist | FEW015 BKN019 OVC042 | 22 | 20 | 25 | 22 | 92% | 12 | NA | 30.11 | 1020.6 | 0.01 | 0.05 | |
| 18 | 04:51 | NW 8 | 5.00 | Light Snow Fog/Mist | FEW013 BKN021 OVC110 | 22 | 21 | 96% | 13 | NA | 30.08 | 1019.4 | |||||
| 18 | 03:51 | NW 10 | 3.00 | Light Snow Fog/Mist | BKN017 OVC028 | 23 | 22 | 96% | 13 | NA | 30.04 | 1018.3 | 0.01 | ||||
| 18 | 02:51 | N 7 | 3.00 | Light Snow Fog/Mist | BKN014 OVC042 | 24 | 23 | 96% | 16 | NA | 30.02 | 1017.5 | 0.02 | 0.03 | |||
| 18 | 01:51 | NW 8 | 3.00 | Light Snow Fog/Mist | BKN011 OVC019 | 24 | 23 | 96% | 15 | NA | 30.00 | 1017.0 | 0.01 | ||||
| 18 | 00:51 | N 8 | 2.00 | Light Snow Fog/Mist | SCT016 BKN028 OVC043 | 25 | 24 | 96% | 16 | NA | 29.98 | 1016.0 | 
CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS
FORECAST:
Chicago Weather Forecast
Chicago Weather Radar
| Twitter group from National Weather Service Chicago, Local Chicago Media, and The Weather Channel. | 
Another round of wintry precip is expected Tuesday night through Wednesday. Precip will begin as snow Tuesday night, then transition to freezing rain Wednesday morning. There is an increasing risk of ice accumulation, especially south of I-88. pic.twitter.com/MTt4bESkGO— NWS Chicago (@NWSChicago) February 18, 2019
Another round of winter weather is expected Tuesday night through Wednesday. Otherwise, dry conditions are expected with gradually moderating temperatures through the end of the week. pic.twitter.com/gcQrlMtto0— NWS Chicago (@NWSChicago) February 18, 2019
Here are reported snowfall totals through 8am from the multiple-round snow event beginning early on the 17th and continuing into the morning of the 18th. Additional totals from lake effect snow this AM are not included. A text listing can be found here: https://t.co/bVAPPm8Rn9 pic.twitter.com/pMqKAHHl2g— NWS Chicago (@NWSChicago) February 18, 2019
Light to moderate lake-enhanced snow will continue to slowly shift southward through the remainder of the morning, with the heaviest snow focusing into southern portions of the Chicago metro into NW IN over the next couple hours. pic.twitter.com/JwqsxC4nnt— NWS Chicago (@NWSChicago) February 18, 2019
Lake effect snow will pivot southeast across the Chicago metro near Lake Michigan. Localized accumulations of up to two inches possible this AM for some locations near Lake Michigan. In the heaviest snow showers, expect visibility of a quarter mile or less & snow covered roads. pic.twitter.com/nMnhryHQce— NWS Chicago (@NWSChicago) February 18, 2019
Moderate to briefly heavy snow in lake adjacent counties this morning. Snow will taper inland though roads are still slick or snow and ice c pic.twitter.com/eMNNjpfFwr— NWS Chicago (@NWSChicago) February 18, 2019
Snow ending inland, though some lake enhancement could lead to rapidly snow covered roads. Dry Tuesday, but another messy system mid week. # pic.twitter.com/pkt7YURDnR— NWS Chicago (@NWSChicago) February 18, 2019
Flooding will likely return to the South and Ohio Valley this week, with a widespread area expected to see 3 to 5-plus inches of rain: https://t.co/pBChled25b pic.twitter.com/a9YGp7rkvf— The Weather Channel (@weatherchannel) February 19, 2019
#WinterStormPetra is in the Southwest now but will bring #snow and #ice to the Plains, Midwest, mid-Atlantic and Northeast Tuesday through Thursday: https://t.co/8ssX12lsHA pic.twitter.com/64Z1Jek2EP— The Weather Channel (@weatherchannel) February 18, 2019
Look up in the night sky tonight and tomorrow night and you may be treated to a #SuperSnowMoon pic.twitter.com/CkWrXKKvgE— Pattern (@Pattern) February 18, 2019
Beautiful #lake-effect #cloud band with great shoreline convergence on #LakeMichigan this morning!! #snow #winter #ilwx #miwx pic.twitter.com/nx8YNH0ZNZ— Tom Niziol (@TomNiziol) February 18, 2019
CLIMATE DATA FROM THE NATIONAL WEATHER SERVICE CHICAGO OFFICE ...
+ + + +
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1235 AM CST TUE FEB 19 2019
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 18 2019...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2019
WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         31    201 PM  70    2017  36     -5       41
  MINIMUM         18   1027 PM -14    1936  21     -3       12
  AVERAGE         25                        28     -3       27
PRECIPITATION (IN)
  YESTERDAY        0.06          1.15 1908   0.07  -0.01     0.02
  MONTH TO DATE    1.95                      1.04   0.91     1.75
  SINCE DEC 1      7.23                      5.02   2.21     3.88
  SINCE JAN 1      3.91                      2.77   1.14     3.29
SNOWFALL (IN)
  YESTERDAY        1.8          11.5  1908   0.3    1.5      0.0
  MONTH TO DATE    8.7                       6.2    2.5     20.3
  SINCE DEC 1     28.3                      25.2    3.1     30.2
  SINCE JUL 1     41.0                      26.6   14.4     30.3
  SNOW DEPTH       4
DEGREE DAYS
 HEATING
  YESTERDAY       40                        36      4       38
  MONTH TO DATE  702                       698      4      783
  SINCE DEC 1   3041                      3132    -91     3193
  SINCE JUL 1   4404                      4388     16     4236
 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1      0                         0      0        0
..................................................................
WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED     7.6
SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW
  FOG
RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     53           200 PM
 AVERAGE    77
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   37        69      2017
 MINIMUM TEMPERATURE (F)   21        -8      2015
SUNRISE AND SUNSET
FEBRUARY 19 2019......SUNRISE   642 AM CST   SUNSET   529 PM CST
FEBRUARY 20 2019......SUNRISE   641 AM CST   SUNSET   531 PM CST
-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.
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HOMETOWN WEATHER: Arlington Heights Weather Forecast -- Arlingtoncardinal.com/weather
LIVE RADAR | STORM TRACKS | CLOUDS INFRARED SAT | CLOUDS VISIBLE SAT (during daylight)
WunderMap® US Temperature/Wind Data || WunderMap®: O'Hare Temps | NE Illinois Temps
Full Screen Motion Weather Radar (Wunderground.com) Midwest Cloud Cover and Arlington Heights Weather Forecast | SWPC Aurora Forecast
SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with azimuth & trajectory, times for dawn, sunrise, solar noon, sunset, dusk ...





















 
