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Boy Lake
70°F
Boy Lake
Boy River, MN · Cass County
70°F water3,465 acres
Right Now
77°
Mostly Clear
Water
70°
Wind
12 mph
WNW
Gusts
24 mph
Pressure
29.61
steady
LakeMonster planner
Plan Boy Lake
Boy Lake
Warm water pushes the plan toward oxygen, shade, depth changes, and low light. The planning constraint is finding the right window.
Best first move
Scout a wind-touched point or bank next to deeper water.
keep shade, oxygen, and a nearby depth change in the plan A workable forecast window starts near 6am with about 14 mph wind.
8 lake data sources in this readSee dataHideLatest source updated Jul 21, 4:37 AM CDT
- Current water temp
- 70°F
- Water temp history
- 398 readings
- Hourly weather
- 224 hours
- Solunar timing
- 3/5
- Satellite imagery
- 288 captures
- Thermal imagery
- 694 captures
- Map structure
- available
- Nearby lakes
- 3 options
The quick read is a planning aid, not a safety or access determination. The assistant will state uncertainty when the page does not contain a specific observation.
Forecast - Tue, Jul 21
High / Low
71° / 57°
Wind
13 mph
gusts 31 mph
Precip
0%
UV
5
Sunrise
5:43 AM
Sunset
9:02 PM
7-Day Weather Outlook
Every forecast metric for the week ahead, plus best days for fishing, boating, swimming, and paddling.
9 day forecast
Best Days This Week
Quick recommendations based on wind, precip, pressure, solunar, and temperature.
Best for Fishing
Wed, Jul 29
75/100
Wed, Jul 29 scores 75/100: Solunar 4/5, Wind 8 mph.
Best for Boating
Wed, Jul 22
90/100
Wed, Jul 22 scores 90/100: Wind 6 mph, Rain 0%.
Best for Swimming
Wed, Jul 22
80/100
Wed, Jul 22 scores 80/100: Air 75°F, Rain 0%.
Best for Paddling
Wed, Jul 22
85/100
Wed, Jul 22 scores 85/100: Wind 6 mph, Rain 0%.
Temperature Range
High Low
Precip & Wind
Rain % Wind mph
Daily Breakdown
Swipe to see all 9 days
| Metric | Tue21 | Wed22 | Thu23 | Fri24 | Sat25 | Sun26 | Mon27 | Tue28 | Wed29 |
|---|---|---|---|---|---|---|---|---|---|
| Condition | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Mostly Clear | Mostly Clear | Clear |
| High / Low | 71°/57° | 75°/53° | 82°/60° | 82°/64° | 88°/69° | 95°/72° | 90°/73° | 79°/65° | 81°/61° |
| Precip | 0% | 0% | 33% | 0% | 43% | 43% | 39% | 30% | 29% |
| Wind | 16 mphgust 31 | 6 mphgust 13 | 10 mphgust 21 | 14 mphgust 25 | 11 mphgust 25 | 7 mphgust 18 | 10 mphgust 20 | 10 mphgust 20 | 8 mphgust 17 |
| Pressure | 29.87" stable | 30.09" rising | 30.01" falling | 29.86" falling | 29.76" falling | 29.68" falling | 29.65" falling | 29.81" rising | 29.97" rising |
| UV Index | 5 | 6 | 7 | 8 | 8 | 7 | 8 | 6 | 8 |
| Sunrise | 5:43 AM | 5:44 AM | 5:45 AM | 5:46 AM | 5:47 AM | 5:48 AM | 5:50 AM | 5:51 AM | 5:52 AM |
| Sunset | 9:02 PM | 9:01 PM | 9:00 PM | 8:59 PM | 8:58 PM | 8:57 PM | 8:56 PM | 8:54 PM | 8:53 PM |
| Bite Rating | 3/5first quarter | 2/5first quarter | 2/5first quarter | 3/5waxing gibbous | 2/5waxing gibbous | 3/5waxing gibbous | 3/5waxing gibbous | 4/5FULL | 4/5FULL |
Today Read
Boy LakeWind read
Moderate
13 mph avg
Water read
70°
Warm-water bite
Air range
57° / 71°
today
Precip
0%
low concern
Today's forecast for Boy Lake has moderate wind, 57F to 71F air temperatures, 0% chance of precipitation, and 70F water.
Fishing Forecast
first quarter
3/5
Major
6:53 PM - 9:23 PM
Minor
2:02 PM - 3:32 PM
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July 17, 2026
Water Temperature History
Current
75°
Jul 26
Low
32°
Mar 8
Average
53°
Last 12 Months
Warmest avg: July (71°F)
Coolest avg: March (36°F)
Rapid warming: April → May (+15°F)
Sharpest cooling: July → August (-9°F)
Weather Forecast
Wind speed, gusts, and pressure trends for trip timing.
7 day view
Hourly Wind Forecast
Swipe days or tap points
21
12am - 11pm
Wind SpeedWind Gust
Tap pointsPeak Wind
16 mph
9am
Peak Gust
31 mph
highest gust
Pressure
29.68 inHg
rising
Visibility
11 mi
83% clouds
Tap chart for details, swipe left or right for different days.Tap chart for details • Swipe for different days
Daily Pressure Forecast
Pressure stability helps plan windows
Pressure
Tap for detailsTap chart points for pressure details
Nearby Lakes
Fishing Forecast
3/5first quarter
Major6:53 PM - 9:23 PM
Minor2:02 PM - 3:32 PM
Water at 70°F -- warm-water species active.
Nearby Lakes
Lake facts
About Boy Lake
Direct answers from the lake profile and latest available condition data. Verify access, regulations, weather alerts, and safety conditions with local authorities.
The latest available LakeMonster reading for Boy Lake, updated Jul 21, 2026, shows 70°F surface water temperature, mostly clear, 12 mph wind. Conditions can vary across the lake and change quickly, so check local weather, access notices, and on-water observations before acting.
Boy Lake has 3,465 acres based on the latest lake profile available to LakeMonster.
Boy Lake is listed in Boy River, Cass County, MN. Check the responsible local or state agency for current access rules, permits, closures, and boating restrictions.