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Fishing Report

Second Black Lake Fishing Report

Mercer, WI

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Modeled from live National Weather Service data as of Sep 6, 2026 at 2:21 AM CDT, plus solunar and sun/moon times computed in-house. This is a computed report, not an eyewitness catch report.

46.154943, -90.190684

Est. water temp

74.7°F

v1 estimate from air temperature — not a sensor reading

Notes from anglers

Imported from GNIS. Nearest town: Mercer (Iron County, WI).

Today’s bite

Largemouth Bass fishing report

Excellent · 84/100

Best window today: 8 PM (Excellent · 97/100)

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Species on record

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Species detail

How to catch them at Second Black Lake

Location

Second Black Lake · 46.1549, -90.1907

Map data © OpenFreeMap, OpenMapTiles, OpenStreetMap contributors

Nearby

Other lakes nearby

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FAQ

Common questions

What fish are in Second Black Lake?

State surveys have confirmed Largemouth Bass, Muskellunge, Northern Pike, Smallmouth Bass, and Walleye in Second Black Lake.

When's the best time to fish Second Black Lake?

Black Crappie feed most actively at Dawn and Dusk, when activity runs about 16% above the daily average across all four light windows. Check today's bite forecast for Second Black Lake to see the best window for current conditions.

Where is Second Black Lake?

Second Black Lake is near Mercer, WI, at 46.1549, -90.1907.

Plan your trip to Second Black Lake

Get the hour-by-hour bite forecast and the best times to fish Second Black Lake, scored against live National Weather Service weather for this exact spot — showing what every input contributed and how well the evidence supports it.