Marine Weather and Tide Forecast for Gary, IN
![]() | Sunrise 6:53 AM Sunset 6:19 PM Moonrise 4:40 AM Moonset 5:15 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
LMZ744 Expires:202610082115;;741080 Fzus53 Klot 081458 Nshlot
nearshore marine forecast national weather service chicago/romeoville il 958 am cdt Thu oct 8 2026
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.
lmz743>745-082115- calumet harbor il to gary in-gary to burns harbor in- burns harbor to michigan city in- 958 am cdt Thu oct 8 2026
Rest of today - Northwest winds 10 to 15 kt becoming east in the afternoon. Partly cloudy. Waves 1 to 3 ft.
Tonight - East winds less than 10 kt becoming south late. Mostly clear. Waves 1 to 2 ft.
Friday - South winds around 10 kt becoming southeast. Chance of showers and slight chance of Thunderstorms in the afternoon. Waves around 1 ft.
Friday night - Southeast winds 10 to 20 kt becoming south overnight. Mostly clear. Waves 1 to 2 ft.
nearshore marine forecast national weather service chicago/romeoville il 958 am cdt Thu oct 8 2026
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.
lmz743>745-082115- calumet harbor il to gary in-gary to burns harbor in- burns harbor to michigan city in- 958 am cdt Thu oct 8 2026
LMZ700
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7 Day Forecast for Marine Location Near Gary, IN

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Area Discussion for Chicago, IL
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| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| CMTI2 - 9087044 - Calumet, IL | 12 mi | 58 min | WSW 5.1G | 72°F | 30.08 | 39°F | ||
| 45198 | 19 mi | 38 min | E 5.8G | 65°F | 64°F | 1 ft | 30.05 | 53°F |
| CNII2 | 19 mi | 73 min | NW 8.9G | 70°F | 36°F | |||
| CHII2 - Chicago, IL | 21 mi | 38 min | ESE 6G | 66°F | 45°F | |||
| MCYI3 - Michigan City, IN | 22 mi | 38 min | W 1.9G | 63°F | 30.06 | 57°F | ||
| 45174 | 36 mi | 48 min | WNW 7.8G | 66°F | 1 ft | 30.15 | ||
| 45026 - St. Joseph, MI | 42 mi | 48 min | W 7.8G | 62°F | 61°F | 2 ft | 30.11 | 51°F |
Wind History for Calumet Harbor, IL
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Airport Reports
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KGYY Gary/Chicago International Airport US | 7 sm | 37 min | var 04 | 10 sm | Clear | 75°F | 45°F | 34% | 30.07 | |
| KIGQ Lansing Municipal Airport US | 15 sm | 12 min | NNW 07 | 10 sm | Clear | 72°F | 37°F | 29% | 30.07 | |
| KVPZ Porter County Municipal Airport US | 23 sm | 31 min | NW 06 | 10 sm | Clear | 72°F | 39°F | 31% | 30.08 | |
| KMDW Chicago Midway International Airport US | 24 sm | 34 min | W 08G15 | 10 sm | Partly Cloudy | 72°F | 37°F | 29% | 30.07 |
Link to 5 hour of 5 minute data for KGYY
Terminal Aerodrome Forecast (TAF) for KGYY
Wind History Graph: GYY
(wind in knots)
GEOS Local Image of great lakes
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Chicago, IL,
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