Waukegan, IL Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Waukegan, IL

June 15, 2024 12:00 AM CDT (05:00 UTC) Change Location
Sunrise 5:12 AM   Sunset 8:31 PM
Moonrise 2:17 PM   Moonset 1:31 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
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LMZ740 Winthrop Harbor To Wilmette Harbor Il- Wilmette Harbor To Northerly Island Il- Northerly Island To Calumet Harbor Il- 930 Pm Cdt Fri Jun 14 2024

Rest of tonight - North winds 10 to 20 kt becoming east 10 to 15 kt late. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft.

Saturday - East winds 10 to 15 kt. Partly cloudy. Waves 1 to 3 ft.

Saturday night - Southeast winds 10 to 15 kt increasing to 15 to 20 kt. Partly cloudy. Waves 1 to 3 ft building to 2 to 4 ft.

Sunday - South winds 15 to 20 kt. Slight chance of showers and Thunderstorms in the morning. Waves 2 to 4 ft.

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7 Day Forecast for Marine Location Near Waukegan, IL
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Area Discussion for - Chicago, IL
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Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 647 PM CDT Fri Jun 14 2024


- Relatively quiet conditions will continue tonight through Saturday night.

- Hot conditions are expected Sunday through at least the middle of next week with daily highs in the 90s and overnight lows in the 70s.

- Daily chances for thunderstorms will return next week, though coverage is expected to be isolated to scattered at best.

Issued at 243 PM CDT Fri Jun 14 2024

Through Saturday night:

A 1020mb surface high pressure system centered over Lake Superior is leading to quiet conditions across the Great Lakes. A lake-enhanced cold front continues to push through northeastern Illinois and will cause temperatures to fall from the mid to upper 80s to the mid to upper 70s. Meanwhile, a bank of dense fog and very low clouds is traveling southward along the Illinois Lake Michigan shoreline, and will reach the northwestern Indiana within the hour. (It should dissipate within the next few hours).

Tonight looks quiet. A renewed push of winds over Lake Michigan may cause waves to quickly build to 2-4 or even locally 5 feet, but felt it would be best to maintain a "Moderate" swim risk given overnight timing. Otherwise, clear skies and overnight lows in the mid 50s are expected.

Tomorrow looks similar to today with highs in the low to mid 80s.
With the surface high translating further eastward into Ontario, our surface winds will turn southeasterly and keep shoreline locations cooler and in the low to mid 70s.

Tomorrow night, an upper-level shortwave will lift across Iowa and into southern Wisconsin. A few showers or even a thunderstorm may attempt to develop across northwestern Illinois overnight, warranting slight chance (20%) PoPs. Otherwise, it looks like another relatively quiet, though warmer, night with overnight lows in the mid 60s.


Sunday through Friday:

The big story of the next week or so is the heat and humidity that is expected to build into the area as a broad ridge and surface high set up across the eastern US.

On Sunday, the ridge axis will pass overhead setting up southwesterly flow. A shortwave is expected to lift across the backside of the ridge and over the area. The jury is still out on whether the showers and storms associated with this wave will impact the CWA Dry air in the low-levels should inhibit any showers/storms from developing. Most model guidance keeps us dry on Sunday with showers/storms moving to the north of the area, with the notable exception of the GFS. Due to this being a few days out yet and the possibility of things to change, have left slight chance PoPs for now.

Model guidance is in good agreement with the placement of the ridge and high pressure with the core setting up in the Mid-Atlantic before slowly drifting north into the Northeast. With the progression, we will be on the backside gradient of the ridge, putting us in play for several shortwave disturbances through the week. Have gone with slight chance PoPs for almost every day next week to account for this.

Despite the shortwave moving across the region, Sunday will be the first day of what looks to be an extended period of seasonably warm temperatures, however, there are discrepancies between the models as to how hot it will truly be. The GFS seems to be buying more into the train of shortwaves with higher dew points (70+ degrees), lower temperatures (85-90 degrees), and more widespread convection through the entire week. On the other end of the spectrum, the ECMWF and Canadian mix dew points out resulting in higher temperatures (95-100 degrees) and dry conditions. Despite the wide variety of temperatures spit out by the models, the accompanying differences in dew points result in similar heat indices (95-100 degrees). Monday is expected to be the hottest day with heat indices approaching or potentially surpassing 100 degrees areawide. At this point it does not appear that a heat advisory will be needed, however with overnight lows only cooling into the mid-70s Sunday night through Tuesday night conditions will be rather unpleasant.

Conditions will be hot and humid through the remainder of the work week though not as hot as Monday as the ridge begins to break down and push off to the east.


Issued at 648 PM CDT Fri Jun 14 2024

Lake enhanced northeasterly winds will ease this evening, becoming light by late evening into the overnight. Winds will become southeast (120-140) early tomorrow morning. While there will be a lake breeze into northeast IL, even if the lake breeze makes it to/through ORD and MDW, the wind shift will be subtle to more easterly (070-100).

VFR conditions expected the next 24 hours.

- Izzi


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
45186 0 mi21 minSSW 9.7G14 63°F 61°F1 ft
45187 8 mi31 minNNW 9.7G12 62°F 60°F2 ft
KNSW3 - Kenosha, WI 15 mi61 minN 7G8 65°F 30.09
45174 18 mi31 minWNW 5.8G9.7 62°F 62°F2 ft30.0657°F
45199 24 mi61 minNNW 9.7 58°F 60°F1 ft30.13
OKSI2 33 mi121 min0G1.9 64°F
CHII2 - Chicago, IL 34 mi31 minNNW 9.9G9.9 71°F 67°F
45198 35 mi21 minNE 9.7G12 64°F 64°F2 ft30.10
CNII2 37 mi16 minN 7G9.9 63°F 52°F
MLWW3 - Milwaukee, WI 44 mi21 minN 12G13 63°F
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 46 mi31 minNNE 9.7G12 61°F 59°F30.0955°F
CMTI2 - 9087044 - Calumet, IL 46 mi43 minNNW 4.1G5.1 30.05

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KUGN WAUKEGAN NATIONAL,IL 5 sm69 minNNW 0310 smClear57°F45°F63%30.08
KENW KENOSHA RGNL,WI 17 sm67 minN 0410 smClear63°F45°F52%30.10
KPWK CHICAGO EXECUTIVE,IL 19 sm68 minN 0310 smClear61°F45°F55%30.10
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Wind History graph: UGN
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Chicago, IL,

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