Lake Wisconsin

Lake Wisconsin

Merrimac, WI

67°F
77°
2 mph73°/56°

Right Now

77°

Mostly Clear

Water

67°

Wind

2 mph

E

Gusts

3 mph

Pressure

29.92

falling

Forecast - Sat, May 30

7am
60°
10am
66°
1pm
72°
4pm
72°

High / Low

73° / 56°

Wind

9 mph

gusts 22 mph

Precip

0%

UV

5

Sunrise

10:21 AM

Sunset

1:30 AM

Today Read

Lake Wisconsin

Wind read

Calm

9 mph avg

Water read

67°

Warm-water bite

Air range

56° / 73°

today

Precip

0%

low concern

Today's forecast for Lake Wisconsin has calm wind, 56F to 73F air temperatures, 0% chance of precipitation, and 67F water.

AI lake plannerGreen lightChecking questions

Ask what to do at Lake Wisconsin today.

The planner reads this page's water temp, forecast, fish species, solunar timing, reports, and imagery context so you can decide what to throw, when to go, and when to move.

Today's AI read

Active-water pattern for Bluegill / Largemouth bass

82 confidence

Active temps make wind edges, shallow cover, and feeding windows more important. Wind is not the main constraint, so timing and presentation can drive the plan. Check the solunar window against hourly wind and light.

Uses this lake data

Current water temp: 67°FWater temp history: 480 readingsHourly weather: 224 hoursSolunar timing: 4/5Fish species: 14 listedSatellite imagery: 237 captures

Trip read from the AI planner

Fishing Forecast

FULL

4/5

Major

5:00 AM - 5:00 AM

Minor

1:00 AM - 2:30 AM

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May 16, 2026

Fish Species

14

Water Temperature History

Current

67°

Jun 7

Low

33°

Feb 8

Average

55°

Last 12 Months

Warmest avg: July (78°F)

Coolest avg: February (36°F)

Rapid warming: AprilMay (+14°F)

Sharpest cooling: SeptemberOctober (-10°F)

Weather Forecast

Wind speed, gusts, and pressure trends for trip timing.

Hourly Wind Forecast

30

12am - 11pm

Wind SpeedWind Gust
Tap points
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Peak Wind

13 mph

1pm

Peak Gust

22 mph

highest gust

Pressure

29.95 inHg

rising

Visibility

19 mi

34% clouds

Tap chart for details, swipe left or right for different days.Tap chart for details • Swipe for different days

Daily Pressure Forecast

Pressure
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Tap chart points for pressure details

Nearby Lakes

FAQ

About Lake Wisconsin

Lake Wisconsin covers 7197.00 acres (11.25 square miles)

Lake Wisconsin is located in Merrimac, Columbia County, WI. It is accessible to the public for outdoor activities.