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Mercer, WI · Iron County
Right Now
Rain
Water
67°
Wind
3 mph
SW
Gusts
9 mph
Pressure
29.60
falling
Forecast - Fri, Jun 12
High / Low
68° / 52°
Wind
10 mph
gusts 29 mph
Precip
34%
UV
6
Sunrise
10:08 AM
Sunset
1:52 AM
Today Read
Martha LakeWind read
Moderate
10 mph avg
Water read
67°
Warm-water bite
Air range
52° / 68°
today
Precip
34%
watch timing
Today's forecast for Martha Lake has moderate wind, 52F to 68F air temperatures, 34% chance of precipitation, and 67F water.
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 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. With a weak solunar score, favor stable weather windows.
Uses this lake data
Trip read from the AI planner
FishableFishing Forecast
waning crescent
Major
2:56 PM - 5:26 PM
Minor
7:11 AM - 8:41 AM
Detailed temperature readings across your lake.
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Water Temperature History
Current
68°
Jun 21
Low
32°
Feb 27
Average
54°
Last 12 Months
Warmest avg: July (73°F)
Coolest avg: March (37°F)
Rapid warming: April → May (+14°F)
Sharpest cooling: September → October (-16°F)
Wind speed, gusts, and pressure trends for trip timing.
Swipe days or tap points
5am - 4am
Peak Wind
15 mph
5pm
Peak Gust
29 mph
highest gust
Pressure
29.61 inHg
rising
Visibility
9 mi
36% clouds
Tap chart for details, swipe left or right for different days.Tap chart for details • Swipe for different days
Pressure stability helps plan windows
Tap chart points for pressure details
Nearby Lakes
Fishing Forecast
2/5waning crescent
Water at 67°F -- warm-water species active.
Nearby Lakes
FAQ
Martha Lake covers 146.00 acres (0.23 square miles)
Martha Lake is located in Mercer, Iron County, WI. It is accessible to the public for outdoor activities.