CastScience

Lake Erie (western basin) conditions today

Wednesday, October 7, 2026. Conditions, not a fishing report: this page has no catch reports.

Lake Erie (western basin), Wednesday, October 7, 2026: lake 63.0 F (projected from the satellite value of Oct 5), 0.5 F below the 1995-2025 mean for the date; over-water wind 14-22 mph (NWS, off Toledo); CastScience Wave Prediction at the roughest area up to 3.6 ft (largest about 6.7 ft, Grubb Reef (south-west of Point Pelee)); in effect: Small Craft Advisory (NWS); Strong wind warning IN EFFECT (ECCC, Western Lake Erie); season phase early fall.

Lake temperature

Today63.0 F, projected
1995-2025 for Oct 7mean 63.5 F, 10th-90th percentile 58.9 F to 68.8 F
Against 1995-20250.5 F below the 1995-2025 mean, within the 10th to 90th percentile of 1995-2025
Last 7 dayscooling 0.49 F a day
Oct 14, projected63.1 F, 80% range 60.4 F to 65.7 F

Measured: satellite basin mean (NOAA GLERL GLSEA grid), newest day Oct 5 at 65.6 F. The satellite analysis runs a day or two behind.

Projection from the satellite value of Oct 5: a daily heat-balance model. Each day the lake moves toward the day's mean air temperature, faster in wind. The weather of its days: 2 observed at the airport stations, 7 from the NWS forecast, 0 from the NOAA 1991-2020 normals. 80% range: the projection plus or minus 1.28 times the residual standard deviation of a regression of later on earlier GLSEA temperatures, 1995-2025, for the same lead time. Science: water temperature

Wind and waves by period

HoursWind over waterCastScience Wave Prediction, roughest area
00:00-06:0018-21 mph from SW3.6 ft (largest about 6.6 ft) Caution: waves may be higher than 2 ft. Forecast significant wave height at Grubb Reef (south-west of Point Pelee): 3.6 ft (average of the highest third). Largest wave in about an hour: 6.6 ft. Grubb Reef (south-west of Point Pelee), 04:00; wind there 22 mph from SW
06:00-12:0018-22 mph from SW3.6 ft (largest about 6.7 ft) Caution: waves may be higher than 2 ft. Forecast significant wave height at Grubb Reef (south-west of Point Pelee): 3.6 ft (average of the highest third). Largest wave in about an hour: 6.7 ft. Grubb Reef (south-west of Point Pelee), 10:00; wind there 22 mph from SW
12:00-18:0016-17 mph from W3.1 ft (largest about 5.7 ft) Caution: waves may be higher than 2 ft. Forecast significant wave height at Grubb Reef (south-west of Point Pelee): 3.1 ft (average of the highest third). Largest wave in about an hour: 5.7 ft. Grubb Reef (south-west of Point Pelee), 12:00; wind there 18 mph from SW
18:00-24:0014-15 mph from W3.0 ft (largest about 5.5 ft) Caution: waves may be higher than 2 ft. Forecast significant wave height at Grubb Reef (south-west of Point Pelee): 3.0 ft (average of the highest third). Largest wave in about an hour: 5.5 ft. Grubb Reef (south-west of Point Pelee), 22:00; wind there 17 mph from W

Wind over water: NWS forecast over open water (off Toledo), issued Tue, Oct 6, 16:01 EDT. CastScience Wave Prediction: modeled for each of the lake's 24 areas from the forecast wind at the area's own over-water forecast point, the open-water distance upwind (fetch) and the depth; each row gives the area with the highest significant wave height in those hours. Hours in local time. Science: waves

Wave model details

Wave heights are model estimates from forecast wind, not measurements, multiplied by 1.15 as a safety margin. Checked against four western-basin buoys (2011-2025), the highest waves of a 12-hour period were 25% or more above the estimate in about 1 period in 80 in open water more than 5 nautical miles from shore (1 in 40 when waves were above 2 ft), and in about 1 period in 6 within 5 nautical miles of shore, also when waves were above 2 ft.

Check the marine forecast and the water at the launch before you go. The decision to go out is yours. Full text

Season phase and front

Season phase: Early fall.

Lake 63.0 F, cooling 0.49 F a day over the last 7 days: 58-68 F and cooling between September and November, so early fall.

Front: Stable.

No front signal in the hourly pressure and wind data, so stable (assumption).

The phase temperature limits and the front rules are starting assumptions. Science: fish and temperature, fronts

Advisories and warnings

Small Craft Advisory: Small Craft Advisory issued October 6 at 9:45PM EDT until October 7 at 4:00PM EDT by NWS Cleveland OH

From Wed, Oct 7, 04:00 EDT to Wed, Oct 7, 16:00 EDT. Zone LEZ144. NOAA National Weather Service.

Strong wind warning IN EFFECT (Western Lake Erie; Data Source: Environment and Climate Change Canada).

Issued Tue, Oct 6, 18:30 EDT. ECCC gives no end time: the warning stands until a later ECCC forecast drops it. Read Tue, Oct 6, 23:24 EDT.

Data ages

How old each source was at Wed, Oct 7, 00:00 EDT, when these values were read.

CPC 6-14 day outlook7 h
ECCC marine forecast and warnings36 min
Ice cover (GLERL)10 h
Lake temperature (GLSEA grid)12 h
Airport daily weather, Port Clinton16 h
Airport daily weather, Toledo Executive16 h
Airport hourly weather, Port Clinton46 min
Airport hourly weather, Toledo Executive49 min
NWS open lakes forecast2 h
NWS marine forecast, GLFLE50 min
NWS marine forecast, NSHCLE56 min
NWS marine forecast, NSHDTX52 min
Buoy, 450059 min
Buoy, 451656 min
Buoy, 452004 min
Buoy, 452011 min
Buoy, 4520233 min
Buoy, SBIO122 min
NWS marine alerts, LEZ444, LEZ142, LEZ143, LEZ144, LEZ162, LEZ163, LEZ1643 min
NWS forecast, Bass Islands57 min
NWS forecast, off Toledo58 min
NWS forecast, Port Clinton62 min
NWS forecast, Detroit River mouth59 min
NWS forecast, Toledo26 min
Water level18 min

Values as of Wed, Oct 7, 00:00 EDT. This page is rebuilt once a day, at about 06:30 EDT (05:30 EST in winter).

Live values and the plan

Water conditions and Forecast show these values live, hour by hour; Plan ranks the areas for your boat and limits. They open after the Terms of Use are accepted, and show Lake St. Clair, the lake chosen in the app; choose Lake Erie (western basin) on the home page to see it there.

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