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Humboldt, SD · Minnehaha County
Right Now
Clear
Water
78°
Wind
6 mph
WNW
Gusts
11 mph
Pressure
30.00
falling
Forecast - Wed, Jun 24
High / Low
77° / 56°
Wind
9 mph
gusts 22 mph
Precip
0%
UV
8
Sunrise
10:47 AM
Sunset
2:13 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 57/100 — Solunar 4/5, Pressure rising.
Best for Boating
Thu, Thu, Jun 25
Thu, Jun 25 scores 90/100 — Wind 7 mph, Rain 0%.
Best for Swimming
Thu, Thu, Jun 25
Thu, Jun 25 scores 80/100 — Air 78°F, Rain 0%.
Best for Paddling
Thu, Thu, Jun 25
Thu, Jun 25 scores 85/100 — Wind 7 mph, Rain 0%.
Ask the AI assistant about this week:
Swipe to see all 9 days
| Metric | Wed24 | Thu25 | Fri26 | Sat27 | Sun28 | Mon29 | Tue30 | Wed1 | Thu2 |
|---|---|---|---|---|---|---|---|---|---|
| Condition | Mostly Clear | Mostly Cloudy | Partly Cloudy | Thunderstorms | Windy | Windy | Thunderstorms | Thunderstorms | Thunderstorms |
| High / Low | 77°/56° | 78°/53° | 82°/58° | 82°/64° | 95°/69° | 96°/69° | 89°/73° | 93°/69° | 87°/73° |
| Precip | 0% | 0% | 0% | 38% | 52% | 50% | 51% | 53% | 53% |
| Wind | 16 mphgust 22 | 7 mphgust 14 | 12 mphgust 22 | 20 mphgust 31 | 18 mphgust 30 | 19 mphgust 32 | 12 mphgust 22 | 16 mphgust 29 | 10 mphgust 19 |
| Pressure | 30.02" stable | 29.98" falling | 29.88" falling | 29.74" falling | 29.56" falling | 29.59" rising | 29.73" rising | 29.80" rising | 29.91" rising |
| UV Index | 8 | 5 | 7 | 6 | 9 | 9 | 7 | 8 | 7 |
| Sunrise | 10:47 AM | 10:48 AM | 10:48 AM | 10:49 AM | 10:49 AM | 10:49 AM | 10:50 AM | 10:50 AM | 10:51 AM |
| Sunset | 2:13 AM | 2:13 AM | 2:13 AM | 2:13 AM | 2:13 AM | 2:13 AM | 2:13 AM | 2:13 AM | 2:13 AM |
| Bite Rating | 3/5first quarter | 2/5waxing gibbous | 2/5waxing gibbous | 3/5waxing gibbous | 2/5waxing gibbous | 5/5FULL | 4/5FULL | 3/5FULL | 3/5waning gibbous |
Today Read
Grass LakeWind read
Calm
9 mph avg
Water read
78°
Warm-water bite
Air range
56° / 77°
today
Precip
0%
low concern
Today's forecast for Grass Lake has calm wind, 56F to 77F air temperatures, 0% chance of precipitation, and 78F water.
AI read · today
Warm water pushes the plan toward oxygen, shade, depth changes, and low light. The planning constraint is finding the right window.
Reads 9 live data sources for this lake — tap a stat or ask anything to see its work.
Fishing Forecast
first quarter
Major
2:09 AM - 4:39 AM
Minor
9:15 PM - 10:45 PM
Detailed temperature readings across your lake.
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Fish Species
6Water Temperature History
Current
76°
Jul 5
Low
36°
Mar 23
Average
62°
Last 12 Months
Warmest avg: June (79°F)
Coolest avg: November (44°F)
Rapid warming: April → May (+15°F)
Sharpest cooling: October → November (-14°F)
Wind speed, gusts, and pressure trends for trip timing.
Swipe days or tap points
5am - 4am
Peak Wind
16 mph
6pm
Peak Gust
22 mph
highest gust
Pressure
30.05 inHg
rising
Visibility
13 mi
45% 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
3/5first quarter
Water at 78°F -- warm-water species active.
Fish Species
6Nearby Lakes
FAQ
Grass Lake covers 0.00 acres (0.00 square miles)
Grass Lake is located in Humboldt, Minnehaha County, SD. It is accessible to the public for outdoor activities.