Marine Weather and Tide Forecast for Winamac, IN
![]() | Sunrise 6:19 AM Sunset 9:04 PM Moonrise 2:58 AM Moonset 4:10 PM |
LMZ745 Expires:202505232115;;012667 Fzus53 Klot 231345 Nshlot
nearshore marine forecast national weather service chicago/romeoville il 845 am cdt Fri may 23 2025
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>745-232115- calumet harbor il to gary in-gary to burns harbor in- burns harbor to michigan city in- 845 am cdt Fri may 23 2025
Rest of today - North winds 5 to 10 kt becoming northeast 10 to 15 kt this afternoon. Mostly cloudy in the morning then clearing. Waves 1 to 3 ft.
Tonight - Northeast winds 10 to 15 kt diminishing to around 5 kt. Partly cloudy in the evening then clearing. Waves 1 to 2 ft.
Saturday - Northeast winds 5 to 10 kt. Mostly Sunny. Waves around 1 ft.
Saturday night - Northeast winds 5 to 10 kt. Partly cloudy. Waves around 1 ft.
nearshore marine forecast national weather service chicago/romeoville il 845 am cdt Fri may 23 2025
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>745-232115- calumet harbor il to gary in-gary to burns harbor in- burns harbor to michigan city in- 845 am cdt Fri may 23 2025
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7 Day Forecast for Marine Location Near Winamac, IN

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Area Discussion for Northern Indiana, IN
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FXUS63 KIWX 231640 AFDIWX
Area Forecast Discussion National Weather Service Northern Indiana 1240 PM EDT Fri May 23 2025
KEY MESSAGES
- Patchy frost near and north of the Michigan border Friday night
- Pleasant weather Memorial Day weekend - cool and mainly dry
- Seasonally cool with low chances for rain at times Monday night through Thursday
DISCUSSION
Issued at 239 AM EDT Fri May 23 2025
A seasonally cool pattern will continue into the middle of next week as an upper level trof and associated upper low remains over the Upper Great Lakes region into Hudson Bay. Low temperatures this upcoming night should dip into the upper 30s near and north of the Michigan border. After coordination with Mich offices, added patchy frost in these areas with lows expected to reach down to 37F this upcoming night. Preferred the GFS solution over the ECMWF as the EC has had major issues with run to run consistency handing the energy downstream (developing a deep cutoff low by the middle of next week) of the blocking ridge. Otherwise, with the weak upper level ridge building slowly (per GFS) over region, temperatures should warm very gradually this upcoming week and be close to normal by Friday. Highs by the end of the week should be in the mid 70s.
AVIATION /18Z TAFS THROUGH 18Z SATURDAY/
Issued at 1236 PM EDT Fri May 23 2025
Overall VFR flight conditions expected with diurnal cu/sc residing around 3000 ft with bases to likely increase somewhat through the day. As noted by the previous forecaster, a similar marine based stratus deck could materialize and move SE from Lk MI later tonight. Confidence not overly high so for now will leave the forecast with no impacts.
IWX WATCHES/WARNINGS/ADVISORIES
IN...None.
OH...None.
MI...None.
MARINE...None.
Area Forecast Discussion National Weather Service Northern Indiana 1240 PM EDT Fri May 23 2025
KEY MESSAGES
- Patchy frost near and north of the Michigan border Friday night
- Pleasant weather Memorial Day weekend - cool and mainly dry
- Seasonally cool with low chances for rain at times Monday night through Thursday
DISCUSSION
Issued at 239 AM EDT Fri May 23 2025
A seasonally cool pattern will continue into the middle of next week as an upper level trof and associated upper low remains over the Upper Great Lakes region into Hudson Bay. Low temperatures this upcoming night should dip into the upper 30s near and north of the Michigan border. After coordination with Mich offices, added patchy frost in these areas with lows expected to reach down to 37F this upcoming night. Preferred the GFS solution over the ECMWF as the EC has had major issues with run to run consistency handing the energy downstream (developing a deep cutoff low by the middle of next week) of the blocking ridge. Otherwise, with the weak upper level ridge building slowly (per GFS) over region, temperatures should warm very gradually this upcoming week and be close to normal by Friday. Highs by the end of the week should be in the mid 70s.
AVIATION /18Z TAFS THROUGH 18Z SATURDAY/
Issued at 1236 PM EDT Fri May 23 2025
Overall VFR flight conditions expected with diurnal cu/sc residing around 3000 ft with bases to likely increase somewhat through the day. As noted by the previous forecaster, a similar marine based stratus deck could materialize and move SE from Lk MI later tonight. Confidence not overly high so for now will leave the forecast with no impacts.
IWX WATCHES/WARNINGS/ADVISORIES
IN...None.
OH...None.
MI...None.
MARINE...None.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
BHRI3 - Burns Harbor, IN | 46 mi | 58 min | N 4.1G | 50°F | 30.13 | |||
MCYI3 - Michigan City, IN | 47 mi | 38 min | NNW 8G | 51°F | 30.10 | 44°F | ||
CMTI2 - 9087044 - Calumet, IL | 63 mi | 50 min | NE 8.9G | 30.07 |
Wind History for Calumet Harbor, IL
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Airport Reports
Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
Link to 1 hour of 5 minute data for KOXI
Terminal Aerodrome Forecast (TAF) for KOXI
Wind History Graph: OXI
(wind in knots)GEOS Local Image of Midwest
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Northern Indiana, IN,

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