Loading lake details...
Loading lake details...

Boulder Junction, WI · Vilas County
Right Now
Mostly Clear
Water
66°
Wind
5 mph
NE
Gusts
8 mph
Pressure
30.00
steady
Forecast - Fri, Jun 26
High / Low
75° / 45°
Wind
3 mph
gusts 10 mph
Precip
0%
UV
5
Sunrise
10:08 AM
Sunset
1:54 AM
Every forecast metric for the week ahead — plus AI-picked best days for fishing, boating, swimming, and paddling.
Instant recommendations based on wind, precip, pressure, solunar, and temperature.
Best for Fishing
Tue, Tue, Jun 30
Tue, Jun 30 scores 73/100 — Solunar 4/5, Rain 0%.
Best for Boating
Fri, Fri, Jun 26
Fri, Jun 26 scores 90/100 — Wind 6 mph, Rain 0%.
Best for Swimming
Fri, Fri, Jun 26
Fri, Jun 26 scores 80/100 — Air 75°F, Rain 0%.
Best for Paddling
Fri, Fri, Jun 26
Fri, Jun 26 scores 85/100 — Wind 6 mph, Rain 0%.
Ask the AI assistant about this week:
Swipe to see all 9 days
| Metric | Fri26 | Sat27 | Sun28 | Mon29 | Tue30 | Wed1 | Thu2 | Fri3 | Sat4 |
|---|---|---|---|---|---|---|---|---|---|
| Condition | Mostly Cloudy | Partly Cloudy | Drizzle | Thunderstorms | Partly Cloudy | Rain | Drizzle | Rain | Drizzle |
| High / Low | 75°/45° | 77°/53° | 77°/56° | 88°/66° | 88°/72° | 88°/72° | 87°/71° | 84°/71° | 89°/69° |
| Precip | 0% | 0% | 44% | 67% | 0% | 60% | 63% | 74% | 56% |
| Wind | 6 mphgust 10 | 7 mphgust 15 | 14 mphgust 27 | 13 mphgust 28 | 11 mphgust 21 | 9 mphgust 21 | 9 mphgust 19 | 6 mphgust 16 | 7 mphgust 15 |
| Pressure | 30.08" stable | 30.02" falling | 29.91" falling | 29.75" falling | 29.76" rising | 29.84" rising | 29.93" rising | 30.02" rising | 30.00" falling |
| UV Index | 5 | 7 | 5 | 7 | 8 | 6 | 6 | 6 | 7 |
| Sunrise | 10:08 AM | 10:09 AM | 10:09 AM | 10:10 AM | 10:10 AM | 10:11 AM | 10:11 AM | 10:12 AM | 10:13 AM |
| Sunset | 1:54 AM | 1:54 AM | 1:54 AM | 1:53 AM | 1:53 AM | 1:53 AM | 1:53 AM | 1:53 AM | 1:52 AM |
| Bite Rating | 2/5waxing gibbous | 3/5waxing gibbous | 2/5waxing gibbous | 5/5FULL | 4/5FULL | 3/5FULL | 3/5waning gibbous | 3/5waning gibbous | 2/5waning gibbous |
Today Read
Grassy LakeWind read
Calm
3 mph avg
Water read
66°
Warm-water bite
Air range
45° / 75°
today
Precip
0%
low concern
Today's forecast for Grassy Lake has calm wind, 45F to 75F air temperatures, 0% chance of precipitation, and 66F water.
AI read · today
Active temps make wind edges, shallow cover, and feeding windows more important. The planning constraint is weak timing.
Reads 8 live data sources for this lake — tap a stat or ask anything to see its work.
Fishing Forecast
waxing gibbous
Major
5:00 AM - 5:00 AM
Minor
11:06 PM - 12:36 AM
Detailed temperature readings across your lake.
No credit card required for preview
Water Temperature History
Current
67°
Jul 5
Low
32°
Feb 16
Average
53°
Last 12 Months
Warmest avg: June (70°F)
Coolest avg: March (37°F)
Rapid warming: April → May (+18°F)
Sharpest cooling: September → October (-12°F)
Wind speed, gusts, and pressure trends for trip timing.
Swipe days or tap points
5am - 4am
Peak Wind
9 mph
5am
Peak Gust
19 mph
highest gust
Pressure
30.06 inHg
rising
Visibility
12 mi
8% 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
2/5waxing gibbous
Water at 66°F -- warm-water species active.
Nearby Lakes
FAQ
Grassy Lake covers 107.00 acres (0.17 square miles) with a maximum depth of 1.22 meters (~4 feet).
Grassy Lake is located in Boulder Junction, Vilas County, WI. It is accessible to the public for outdoor activities.