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Long Lake
65°F
Long Lake
Sullivan, MN · Morrison County
65°F water125 acres35 ft deep
Right Now
81°
Clear
Water
65°
Wind
14 mph
WNW
Gusts
26 mph
Pressure
29.63
rising
LakeMonster planner
Plan Long Lake
Long Lake
Active temps make wind edges, shallow cover, and feeding windows more important. The planning constraint is wind control.
Best first move
Scout a protected point, inside turn, or leeward edge.
use a search bait first, then slow down after the first contact A workable forecast window starts near 6am with about 14 mph wind.
8 lake data sources in this readSee dataHideLatest source updated Jul 21, 6:26 AM CDT
- Current water temp
- 65°F
- Water temp history
- 462 readings
- Hourly weather
- 224 hours
- Solunar timing
- 3/5
- Satellite imagery
- 205 captures
- Thermal imagery
- 653 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
74° / 58°
Wind
13 mph
gusts 32 mph
Precip
0%
UV
7
Sunrise
5:45 AM
Sunset
8:58 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
Tue, Jul 28
65/100
Tue, Jul 28 scores 65/100: Solunar 4/5, Pressure rising.
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 | Partly Cloudy | Partly Cloudy | Mostly Clear | Thunderstorms | Thunderstorms | Mostly Clear | Partly Cloudy | Clear |
| High / Low | 74°/58° | 75°/52° | 81°/57° | 83°/62° | 91°/67° | 96°/71° | 91°/72° | 80°/64° | 83°/63° |
| Precip | 0% | 0% | 25% | 28% | 43% | 45% | 44% | 14% | 12% |
| Wind | 17 mphgust 32 | 6 mphgust 15 | 10 mphgust 20 | 13 mphgust 25 | 12 mphgust 25 | 10 mphgust 26 | 10 mphgust 22 | 11 mphgust 21 | 9 mphgust 19 |
| Pressure | 29.86" stable | 30.10" rising | 30.05" falling | 29.93" falling | 29.79" falling | 29.70" falling | 29.66" falling | 29.82" rising | 29.96" rising |
| UV Index | 7 | 6 | 6 | 8 | 8 | 6 | 8 | 5 | 9 |
| Sunrise | 5:45 AM | 5:46 AM | 5:47 AM | 5:48 AM | 5:49 AM | 5:50 AM | 5:51 AM | 5:53 AM | 5:54 AM |
| Sunset | 8:58 PM | 8:57 PM | 8:56 PM | 8:55 PM | 8:54 PM | 8:53 PM | 8:51 PM | 8:50 PM | 8:49 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
Long LakeWind read
Moderate
13 mph avg
Water read
65°
Warm-water bite
Air range
58° / 74°
today
Precip
0%
low concern
Today's forecast for Long Lake has moderate wind, 58F to 74F air temperatures, 0% chance of precipitation, and 65F water.
Fishing Forecast
first quarter
3/5
Major
6:52 PM - 9:22 PM
Minor
1:58 PM - 3:28 PM
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September 24, 2025
Water Temperature History
Current
73°
Jul 26
Low
32°
Mar 23
Average
55°
Last 12 Months
Warmest avg: August (73°F)
Coolest avg: February (37°F)
Rapid warming: March → April (+13°F)
Sharpest cooling: August → September (-13°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
17 mph
10am
Peak Gust
32 mph
highest gust
Pressure
29.67 inHg
rising
Visibility
17 mi
6% 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
Major6:52 PM - 9:22 PM
Minor1:58 PM - 3:28 PM
Water at 65°F -- warm-water species active.
Nearby Lakes
Lake facts
About Long 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 Long Lake, updated Jul 21, 2026, shows 65°F surface water temperature, clear, 14 mph wind. Conditions can vary across the lake and change quickly, so check local weather, access notices, and on-water observations before acting.
Long Lake has 125 acres and a reported maximum depth of about 35 feet based on the latest lake profile available to LakeMonster.
Long Lake is listed in Sullivan, Morrison County, MN. Check the responsible local or state agency for current access rules, permits, closures, and boating restrictions.