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

June 14, 2024 5:43 PM CDT (22:43 UTC) Change Location
Sunrise 5:13 AM   Sunset 8:30 PM
Moonrise 1:16 PM   Moonset 1:13 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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LMZ741 Expires:202406150330;;017241 Fzus53 Klot 141949 Nshlot
nearshore marine forecast national weather service chicago/romeoville il 249 pm cdt Fri jun 14 2024
for waters within five nautical miles of shore on lake michigan
waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered.
lmz740>742-150330- winthrop harbor to wilmette harbor il- wilmette harbor to northerly island il- northerly island to calumet harbor il- 249 pm cdt Fri jun 14 2024

Late this afternoon - North winds 10 to 20 kt. Patchy dense fog south of navy pier. Waves 1 to 3 ft.

Tonight - North winds 15 to 25 kt becoming east 10 to 15 kt by daybreak. Clear. Waves 2 to 4 ft.

Saturday - East winds 10 to 15 kt. Increasing cloudiness. 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.

No data

7 Day Forecast for Marine Location Near Niles, IL
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Area Discussion for - Chicago, IL
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Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 243 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 1230 PM CDT Fri Jun 14 2024

A lake breeze has flipped winds to the northeast at KORD, KMDW, and KGYY and will get to KDPA between 19Z to 20Z. There remains a chance for northeast winds at KRFD this afternoon, but confidence is lower with the uncertainty if the boundary can hold itself together that far inland. Gusts have already been observed 15 to 20 knots, but they are fairly sporadic so while they may continue occasionally, it was kept out of the TAF.

Other than some light cumulus development both this and tomorrow afternoon, VFR skies are expected through the TAF period. Winds will turn to the southeast Saturday morning. Once again it will not be ruled out for occasional gusts up to 20 knots in the late afternoon Saturday, but confidence in persistence was too low to add to the TAF.



Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
45174 12 mi44 minNW 12G18 64°F 62°F3 ft30.0059°F
OKSI2 12 mi104 minNNE 7G9.9 67°F
CHII2 - Chicago, IL 14 mi44 minN 17G19 71°F 68°F
45198 15 mi34 minNE 14G16 65°F 65°F2 ft30.05
CNII2 15 mi29 minN 8.9G13 68°F 57°F
CMTI2 - 9087044 - Calumet, IL 24 mi56 minNNW 14G17 66°F 30.0060°F
45186 25 mi34 minSW 14G18 63°F 61°F2 ft
45187 34 mi34 minN 18G23 63°F 61°F3 ft
KNSW3 - Kenosha, WI 41 mi44 minN 12G13 64°F 30.04
BHRI3 - Burns Harbor, IN 43 mi64 minNNW 4.1G5.1 65°F 30.04
45170 48 mi44 minN 5.8G9.7 66°F 1 ft30.03
45199 49 mi74 minN 14 60°F 60°F1 ft30.09

Wind History for Calumet Harbor, IL
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Airport Reports
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Wind History graph: ORD
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